Effect of Continuous Nursing Based on IKAP Theory on Periodontal Indicators and Self-Management Ability of Patients With Periodontal Disease.

Effect of Continuous Nursing Based on IKAP Theory on Periodontal Indicators and Self-Management Ability of Patients With Periodontal Disease - PMC Skip to main content An official website of the United States government Here's how you know Here's how you know Search Log in Primary site navigation Search Log in Search PMC Full-Text Archive Search in PMC Journal List User Guide As a library, NLM provides access to scientific literature. Inclusion in an NLM database does not imply endorsement of, or agreement with, the contents by NLM or the National Institutes of Health. Learn more: PMC Disclaimer | PMC Copyright Notice Int Dent J . 2026 May 31;76(4):109648. doi: 10.1016/j.identj.2026.109648 Effect of Continuous Nursing Based on IKAP Theory on Periodontal Indicators and Self-Management Ability of Patients With Periodontal Disease Xiaojie Yao 1 , Ziqing Cheng 1, ⁎ Author information Article notes Copyright and License information 1 Changsha Stomatological Hospital, Hunan University of Traditional Chinese Medicine Stomatological College, Changsha, Hunan Province, China ⁎ Corresponding author. Changsha Stomatological Hospital, Hunan University of Traditional Chinese Medicine Stomatological College, Changsha, Hunan Province 410004, China. hunanVIP1818@163.com Collection date 2026 Aug. © 2026 The Authors This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). PMC Copyright notice PMCID: PMC13231073  PMID: 42217379 Abstract Periodontitis, a chronic inflammatory disease affecting over a billion people globally, requires effective long-term self-management for successful outcomes. However, a significant gap persists between patient knowledge and sustained behavioural change. This review proposes and synthesizes evidence for a paradigm shift in periodontal care: continuous nursing based on the Information-Knowledge-Attitude-Practice (IKAP) theory. We deconstruct the IKAP framework as a sequential cascade where targeted Information is converted to personalized Knowledge, shaping positive Attitudes to ultimately drive sustained Practice. Continuous nursing operationalizes this model through a triphasic approach: pre-clinical digital preparation, in-clinic catalytic skill-building and motivational interviewing, and post-clinical reinforcement via tele-nursing and smart technology. Synthesized evidence from recent trials and reviews indicates that this approach leads to clinically meaningful improvements in periodontal indicators (e.g., probing depth, bleeding on probing) and significantly enhances patients' self-management ability, self-efficacy, and oral health-related quality of life. By integrating behavioural science with chronic care management, IKAP-based continuous nursing bridges the intention-behaviour gap, offering a superior, patient-centered model for achieving durable periodontal health and empowering patients in their long-term care journey. Keywords: Continuous nursing, IKAP theory, Periodontitis, Self-management, Behavioural intervention Introduction: the self-management paradox in periodontal disease Periodontitis is a globally pervasive, chronic inflammatory condition of the periodontium that remains a leading source of oral morbidity and disability. Recent global burden analyses estimate that well over one billion people are affected by severe forms of periodontal disease and that the absolute number of affected individuals has risen in the past 3 decades, with disproportionate increases in low and middle income regions. 1 , 2 This high and persistent prevalence translates into large direct and indirect economic burdens: the latest estimates of global economic impacts from oral conditions attribute hundreds of billions of US dollars per year to treatment costs and productivity losses, of which periodontitis is a substantial component. 3 , 4 Beyond teeth and gums, periodontitis exerts measurable systemic effects that amplify its public health importance. High quality epidemiologic syntheses and consensus statements document bidirectional links between periodontitis and metabolic disease, most notably diabetes mellitus, with periodontitis increasing the probability of incident or progressive dysglycemia and, conversely, diabetes amplifying periodontal risk and severity. 5 , 6 There is also a growing and concordant body of evidence associating periodontitis with atherosclerotic cardiovascular disease and related outcomes, an association that plausibly operates through systemic inflammation, endothelial dysfunction, and shared risk pathways. 7 , 8 These systemic relationships turn a local oral condition into a disease with implications for general health, multimorbidity, and health system planning. In this light, self-management assumes central importance. Periodontitis is fundamentally a chronic disease that requires quotidian plaque control, behavioural maintenance, and relapse prevention if clinical stability is to be achieved; professional periodontal therapy is necessary but by definition episodic and therefore adjunctive to daily self-care. 1 , 9 Effective self-management therefore offers the most direct lever for long term control of disease activity and the prevention of sequelae that drive both morbidity and cost. Despite clarity about what constitutes effective self-care, there is a persistent disconnect between patient knowledge and sustained behaviour. Traditional dental education encounters are often brief, didactic, and delivered in a standardized fashion that does not account for individual informational needs, psychosocial barriers, or the environmental constraints that determine whether a patient will integrate new behaviours into daily life. Systematic reviews and trials have repeatedly shown that stand alone, lecture-based oral health education frequently produces modest or transient improvements in knowledge but only limited, inconsistent effects on long term clinical endpoints or persistent behaviour change. 10 This failure reflects a well characterized intention-behaviour gap in health psychology: intentions or knowledge alone explain only a portion of actual behaviour, and many individuals who intend to adopt better oral hygiene nonetheless fail to do so when faced with competing demands, low habit strength, or situational barriers. Meta-analytic work and theory-driven reviews identify moderating influences such as planning, self-regulatory capacity, context cues, and social support that determine whether intention translates into sustained action. 11 , 12 For periodontal care, the implication is that education must be reframed from a single knowledge transfer to an on-going, personalized process that scaffolds habit formation and responds to relapse signals in real time. To address these gaps we propose a paradigm shift: continuous nursing founded on the Information–Knowledge–Attitude–Practice (IKAP) framework as an integrated model to support long term periodontal self-management. The IKAP model extends classic knowledge–attitude–practice constructs by sequencing information delivery, verifying knowledge acquisition, shaping attitudes and self-efficacy, and translating these into observable practice changes through staged interventions that are iteratively tailored to the patient. 13 , 14 Continuous nursing operationalizes this framework by converting episodic clinic visits into durable therapeutic relationships in which nursing professionals provide assessment, coaching, and behavioural reinforcement across time and settings using telephone, asynchronous messaging, video contacts, and platform-based reminders. Reviews of telenursing and nurse-led virtual care in chronic disease report improved accessibility, adherence support, and clinical outcomes when continuity of contact is sustained. 15 , 16 Emerging trials applying personalized and digital behavioural interventions to oral health suggest that tailoring, repeated contacts, and behaviour-change techniques can produce superior and more persistent improvements in hygiene practices than conventional education alone. 17 Taken together, these lines of evidence justify testing continuous nursing built upon IKAP theory as a pragmatic and theoretically grounded intervention to bridge the intention-behaviour gap in periodontitis care. The primary aim of this narrative review is to examine evidence on the effects of continuous nursing interventions based on the IKAP (Information–Knowledge–Attitude–Practice) framework on periodontal clinical indicators and patients’ self-management ability. To make the scope explicit we defined the review question using a structured PICO framework (Population, Intervention, Comparison, Outcomes) and report the search and selection approach used to identify relevant empirical and review studies. PICO (review question) Population (P): Adults with periodontitis (supportive periodontal care / maintenance phases) and adults receiving non-surgical periodontal therapy. Intervention (I): Continuous nursing or nurse-led continuous care interventions structured around IKAP principles (repeated/tailored education, teach-back, motivational interviewing, tele-nursing, device-mediated feedback). Comparison (C): Usual episodic care or single-session oral health education / standard recall (or no structured continuous nursing). Outcomes (O): Primary: periodontal clinical indicators (probing depth [PD], clinical attachment level [CAL], bleeding on probing [BOP], Plaque Index). Secondary: self-management ability, oral hygiene self-efficacy, oral health–related quality of life, adherence metrics. Methods: search strategy and selection criteria This work is a narrative (non-systematic) review. Although we applied a structured PICO and performed targeted searches in PubMed/MEDLINE, Web of Science and Scopus, we did not carry out a full systematic screening that records numbers at each stage; accordingly, no PRISMA flow diagram was constructed. Instead, we provide the complete search terms and inclusion/exclusion criteria in the Methods and list the principal included studies in the main text and references to maximise transparency. Reporting follows best practices for narrative reviews as described by scale for the assessment of narrative review articles (SANRA). We searched PubMed/MEDLINE, Web of Science, and Scopus without date restrictions up to 31 December 2025 using combinations of keywords and MeSH terms such as “continuous nursing,” “IKAP,” “periodontitis,” “self-management,” “tele-nursing,” “smart toothbrush,” and “behavioural intervention.” Duplicate records were removed and titles/abstracts were screened independently; full texts of potentially eligible articles were assessed against pre-specified inclusion and exclusion criteria. Where screening disagreements occurred they were resolved by consensus. Inclusion criteria were: (1) primary studies (randomized controlled trials, cohort studies, pilot studies), systematic reviews and narrative reviews evaluating continuous nursing, IKAP theory, or behavioural interventions in periodontal care; (2) publications in English; (3) outcomes related to periodontal clinical indicators, self-management, or psychosocial metrics. Exclusion criteria were: (1) studies not focused on periodontitis or behavioural aspects; (2) conference abstracts, editorials, or non-peer-reviewed articles. We followed guidance for reporting narrative reviews (SANRA) rather than systematic-review checklists (PRISMA); the SANRA checklist guided the description of aims, search approach, selection rationale and evidence appraisal. Deconstructing the IKAP theory: a psychological framework for behavioural change The IKAP cascade: information (I), knowledge (K), attitude (A), practice (P) The IKAP model frames behaviour change as a sequential cascade in which discrete cognitive and behavioural work is required at each stage for durable change to occur. 18 , 19 At the first node, Information refers to raw, decontextualized facts such as the statement that dental plaque provokes gingival inflammation; this stage is necessary but not sufficient for change because information alone often fails to be encoded or acted upon. 18 , 20 Information overload is a recognized hazard in clinical education, where too many facts delivered in a single encounter reduce retention and decision utility, thereby undermining downstream stages of IKAP. 20 , 21 Translation of information into Knowledge requires personalization and cognitive processing so that the patient can link generic facts to personal signs and symptoms, for example understanding that bleeding on probing signals host response to biofilm rather than transient irritation. 19 , 22 Techniques that reliably convert information into usable knowledge in clinical practice include teach-back, which closes the loop by asking patients to re-explain concepts in their own words, and motivational interviewing, which elicits personal meaning and ambivalence to tailor meanings to the patient. 21 , 23 The evidence base for teach-back includes randomized and quasi-randomized studies showing improved comprehension, retention, and short term adherence across clinical contexts, which supports its use as an active mechanism in the I-to-K transition. 24 , 25 Motivational interviewing functions complementarily by provoking reflective processing and value clarification that make knowledge salient and emotionally resonant, which is especially helpful when patients possess competing goals or low perceived relevance for oral hygiene. 26 , 27 Attitude in IKAP is the evaluative node where knowledge is integrated with affect and outcome expectancies so that patients form a motivational stance toward the target behaviour. 18 The psychosocial construct most directly linked to successful attitudinal change is self-efficacy, defined as a person’s belief in their capability to perform specific behaviours, and it reliably predicts both intention and action in oral health interventions. 26 , 28 Nursing interventions that use graded mastery, modelling, and verbal persuasion therefore map directly onto the A node by strengthening self-efficacy and perceived benefits while reducing perceived barriers. 21 , 28 Rigid information provision that does not address perceived competence or benefit is unlikely to shift attitudes, a insight that explains why some knowledge-rich educational encounters fail to change behaviour. 20 Practice is the final and most consequential node in IKAP; it denotes the adoption, refinement, and maintenance of correct behavioural routines such as effective twice-daily brushing, correct interdental cleaning technique, and follow-up adherence. 18 , 19 The transformation from deliberate action to automatic habit requires repeated, context-cued repetition and the progressive reduction of cognitive load associated with the task, a process empirically characterized by habit formation studies which show substantial interindividual variability in time to automaticity. 29 , 30 Nursing protocols that scaffold practice by combining supervised skills training, brief feedback loops, and environmental cues encourage this automatization and thereby protect gains from relapse. 18 , 31 Finally, in continuous nursing programs grounded in IKAP, iterative reassessment enables clinicians to detect where a patient is stuck in the cascade and apply the targeted strategy required for progression, for example using teach-back to shore up Knowledge or motivational interviewing to strengthen Attitude. 18 , 21 This mapping summarizes how each IKAP stage translates into nurse-deliverable actions and the behaviour-change techniques that support them ( Table 1 ). This mapping summarizes how each IKAP stage translates into nurse-deliverable actions and the behaviour-change techniques that support them ( Table 1 ), with the sequential cascade visualized in Figure 1 . Table 1. IKAP cascade: nursing actions mapped to techniques and evidence. IKAP node Nursing actions (pre-/in-/post-clinic) Key behaviour-change techniques Ref. Information (I) Pre-visit portal modules, risk profile, short videos Tailored info, pre-visit priming 18 , 20 , 32 Knowledge (K) Teach-back, interactive demos in clinic Teach-back, multimodal instruction 21 , 24 , 25 , 33 Attitude (A) Motivational interviewing, goal co-creation MI, self-efficacy strengthening, goal setting 23 , 26 , 28 , 34 Practice(P) Supervised skills training, device-guided feedback, tele-follow-up Graded mastery, supervised repetition, nudges 18 , 29 , 31 , 35 , 36 Open in a new tab Fig. 1. Open in a new tab Schematic of the IKAP cascade in nursing interventions. Information (I) provides raw facts but risks overload; Knowledge (K) requires personalization through strategies such as teach-back and motivational interviewing; Attitude (A) is shaped by self-efficacy, perceived benefits, and supportive interventions; and Practice (P) reflects skill training, repetition, and habit formation. Continuous reassessment ensures targeted support when patients stall in the cascade. IKAP versus other behavioural models Compared with canonical cognitive models such as the Health Belief Model and the Theory of Planned Behaviour, IKAP is concise and operationally granular, because its stages map directly to discrete, nurse-deliverable actions: correct information delivery, comprehension checks, attitude work, and supervised practice. 18 , 37 The Health Belief Model foregrounds perceived susceptibility, severity, benefits, and barriers and is useful for predicting readiness, yet it is less prescriptive about how to convert understanding into practiced skill, which is a central strength of IKAP in clinical settings. 19 The Theory of Planned Behaviour identifies attitudes, subjective norms, and perceived behavioural control as proximal determinants of intention, which is valuable for predicting behaviour in aggregate, but TPB often leaves unanswered the microlevel instructional strategies required to produce sustained habitual practice in individual patients. 29 , 37 IKAP’s advantage in frontline nursing is pragmatic: each stage corresponds to an evidence-based technique that nurses can be trained to deliver, for example teach-back for knowledge verification, motivational interviewing for ambivalence, and supervised repetition for habit formation, which facilitates standardized implementation and measurable process evaluation. 21 , 23 , 29 Nevertheless, IKAP is complementary rather than antagonistic to established theories because constructs such as perceived benefits and self-efficacy are embedded within the A node, and social norms can be incorporated as contextual modifiers across the cascade, allowing IKAP to operate as a practice-oriented implementation layer atop a theoretical prediction model. 28 , 38 For clinical researchers and high impact nursing programs aiming to change periodontal behaviour, the appeal of IKAP lies in its directness: it prescribes discrete, testable steps that can be evaluated with proximal process measures and distal periodontal outcomes, which supports both translational fidelity and research reproducibility. 18 , 19 The "Continuous Nursing" engine: operationalizing IKAP for periodontal care Pre-clinical phase (Setting the stage) The pre-clinical phase frames continuous nursing by delivering targeted information that converts raw exposure into usable knowledge, thereby initiating the first transition in the IKAP cascade. 18 Information delivery through digital portals before the appointment reduces information asymmetry, primes expectations about periodontal procedures, and permits asynchronous ingestion of tailored multimedia that enhances comprehension compared with single-session verbal instruction. 18 , 32 Modern portals can integrate brief validated risk calculators that synthesize smoking status, glycemic control, and periodontal indices to generate personalized risk profiles, which both orient clinicians and motivate patients by translating abstract risk into individualized probabilities. 32 , 35 Embedding short, adaptive learning modules in those portals supports knowledge acquisition by sequencing content to the patient’s baseline understanding, thereby shortening the information to knowledge transition and reducing cognitive overload at the clinic visit. 20 , 32 Importantly, goal setting is introduced at this stage as an activated attitude component rather than a passive recommendation; when goals are co-created in the portal (for example, targeted reductions in bleeding on probing or daily interdental cleaning frequency) they increase commitment and operationalize readiness for change. 18 , 34 Digital pre-visit questionnaires that probe barriers, prior experiences, and self-efficacy allow nurses to triage patients by behavioural phenotype and to plan tailored in-clinic approaches that address motivational deficits. 18 , 32 By converting administrative touchpoints into pedagogic opportunities, the pre-clinical phase converts passive patients into prepared learners and produces measurable preparatory shifts in knowledge and attitude before the first clinical contact. 18 , 32 In-clinical phase (The catalyst) The in-clinic encounter is the catalytic interval in which acquired knowledge and nascent attitudes are translated into supervised practice that forms durable habits. 18 Knowledge transfer is most effective when it is active and multimodal; interactive demonstrations that incorporate plaque-disclosing agents, live video of plaque zones, or real-time fluorescence imaging create vivid, objective feedback that accelerates skill acquisition compared with didactic instruction alone. 33 , 39 Disclosing-assisted demonstrations expose micro-anatomic plaque reservoirs and enable immediate corrective practice, thereby encoding procedural knowledge and building motor fluency for effective brushing and interdental cleaning. 33 , 40 Attitude work in the clinic should adopt person-centered counseling techniques; motivational interviewing delivered by trained nurses addresses ambivalence, elicits change talk, and links periodontal goals to personally salient values, which increases intrinsic motivation to adhere to home care. 34 , 41 Supervised practice with a coach-style nurse who observes technique, gives specific corrective cues, and scaffolds mastery experiences increases self-efficacy an d supports transfer from knowledge to intentional practice. 18 , 34 For complex behaviour chains such as interdental cleaning, the clinic environment provides an essential affordance: repetition under low-stakes observation until the patient can perform the task independently. 18 Importantly, in-clinic interventions should be documented and linked to the patient’s digital profile so that subsequent continuous nursing interventions can reference concrete baseline behaviours rather than rely on recall. 32 , 35 Post-clinical phase (The sustaining force) Sustaining periodontal health requires continuous, data-driven reinforcement that closes the loop from practice back to information and then to adjusted attitudes and practices; this is the primary domain where modern continuous nursing provides cutting-edge added value. 18 Continuous monitoring using connected, sensor-enabled toothbrushes provides objective metrics of brushing duration, coverage maps, and applied pressure, converting previously subjective self-reports into analysable longitudinal data streams that nurses and clinicians can use for precise feedback. 35 , 36 Early randomized and quasi-experimental evidence indicates that intelligent power toothbrush systems paired with apps can reduce plaque indices and bleeding scores during supportive periodontal care when data are used to guide counseling. 36 , 42 These devices function as both measurement instruments and behavioural scaffolds, enabling nurses to identify persistent coverage gaps and to prescribe micro-practices that are empirically targeted rather than speculative. 35 , 36 AI-driven mobile health platforms extend this capability by converting raw sensor feeds into individualized nudges, adaptive micro-learning modules, and reinforcement messages that are timed to moments of opportunity identified by usage patterns. 32 35 When algorithms incorporate patient-specific risk, recent clinical progress, and psychosocial profile, reminders become tailored interventions that influence knowledge and attitude while prompting concrete behaviours, a synergy central to the IKAP loop. 32 , 35 The emerging literature provides mixed but promising signals: several trials and pilot implementations show improvements in adherence metrics and plaque reduction, whereas others find minimal net clinical effect when digital nudges are not integrated with human follow-up; these findings emphasize that technology enhances but does not replace the relational functions of continuous nursing. 32 , 36 , 43 Virtual check-ins implemented as structured tele-dentistry nursing encounters sustain the therapeutic alliance, allow troubleshooting of technique, and permit rapid re-calibration of behavioural prescriptions based on current device data or patient-reported problems. 44 , 45 Trials of telephone and smartphone-enabled follow-up demonstrate that systematically delivered virtual contacts produce better maintenance of periodontal indices and higher self-management scores compared with usual care in numerous cohorts. 44 , 45 Finally, continuous nursing that integrates objective device data, AI-driven personalization, and periodic tele-nursing review produces a closed-loop system in which information collection refines knowledge transfer, attitudinal alignment is reinforced by real-time feedback, and small, frequent practice wins aggregate into meaningful clinical benefit. 23 , 35 , 36 In sum, operationalizing IKAP for periodontal care requires a continuum of interventions: anticipatory information and risk profiling, in-clinic catalytic skill building and motivational work, and post-clinic continuous monitoring and digitally augmented human support that together transform episodic treatment into durable self-management. 18 , 36 , 41 This integrated continuous nursing model is schematically represented in Figure 2 . Key digital enablers, from pre-visit modules to smart toothbrushes and AI risk models, and their practical metrics are summarized in Table 2 . Fig. 2. Open in a new tab Schematic representation of the “Continuous Nursing” model operationalizing the Information–Knowledge–Attitude–Practice (IKAP) framework for periodontal care. The model integrates 3 interdependent phases: (1) Pre-clinical digital education, risk profiling, and goal setting; (2) In-clinic catalytic skill building through multimodal demonstrations, motivational interviewing, and supervised practice; and (3) Post-clinical reinforcement via connected devices, AI-driven feedback, and tele-nursing follow-up. Together, these phases create a closed-loop system that transforms episodic treatment into sustained self-management and measurable. Table 2. Digital tools, functions, and evidence strength. Tool / element Primary function Practical example / metric Ref. Pre-visit digital portal & adaptive modules Information delivery, risk profiling % patients completing module; risk score generated 18 , 32 Smart / sensor toothbrushes Objective brushing duration/coverage/pressure Device coverage heatmap; brushing minutes/day 35 , 36 , 42 Smartphone app + telemonitoring Asynchronous feedback, tele-follow-up App engagement rate; message response time 43 , 45 , 46 Plaque-disclosing imaging (visual feedback) In-clinic behaviour training % sites disclosed; immediate correction count 33 , 39 , 40 AI risk prediction & personalization Targeted allocation of intensive support Predicted nonadherence risk score 47 , 48 Open in a new tab Synthesizing the evidence: impact on periodontal indicators and self-management Effects on clinical periodontal indicators Randomized trials, prospective cohorts, and contemporary systematic reviews converge on a consistent message: theory-informed, continuous support delivered by nursing or digital platforms produces clinically meaningful improvements in standard periodontal endpoints when added to conventional therapy. Systematic reviews of behavioural interventions in periodontitis that include trials using goal setting, self-monitoring, and repeat contacts report pooled reductions in plaque and bleeding indices and signal beneficial effects on pocket depth when interventions are sustained beyond the immediate post-treatment window. 49 , 50 These findings align with current consensus on clinically relevant endpoints in periodontology where probing pocket depth reduction and clinical attachment level gain remain the primary, disease-relevant outcomes to evaluate. 51 When evidence is disaggregated by intervention type, interventions that embody the principles of the IKAP sequence show larger and more durable effects than single session education. Recent studies that operationalize IKAP as repeated, tailored instruction plus attitude and practice reinforcement report greater mean reductions in probing depth and superior gains in clinical attachment level at intermediate follow up time points of 6 to 12 months compared with standard advice and usual recall. 52 , 53 For example, a controlled study of the IKAP nursing model in older adults with periodontitis found statistically significant improvements in probing depth and clinical attachment level by 6 months in the IKAP group relative to conventional care, with concurrent reductions in bleeding on probing and plaque indices. 53 Complementary evidence comes from randomized trials of telenursing and smartphone telemonitoring that share the continuous contact principle. A randomized trial comparing different telephone follow up frequencies after non-surgical periodontal therapy demonstrated dose responsive improvements in bleeding and plaque measures and stability of pocket depths with more frequent follow up contacts. 44 A separate prospective randomized telemonitoring trial using smartphone-based feedback reported maintenance of plaque control and smaller increases in probing depth at 6 months in the intervention arm. 45 , 46 These trials support the mechanistic hypothesis that iterative reinforcement and objective feedback sustain behavioural gains long enough to translate into tissue level benefits. Secondary outcomes commonly used in periodontal trials, including bleeding on probing, Plaque Index, and Gingival Index, consistently improve with continuous nursing approaches. Meta-analytic trends from behaviour-focused interventions indicate larger effect sizes for inflammatory markers such as bleeding on probing than for attachment gain, consistent with the view that controlling biofilm and inflammation is the proximal target of behavioural change while attachment gain is a downstream structural outcome that requires both effective self-care and appropriate professional therapy. 49 , 50 A critical and novel observation across studies is superior long term stability. Trials that include follow up beyond the immediate post-therapy window show that programmes providing sustained, theory-based reinforcement produce less relapse in plaque accumulation and bleeding and smaller late increases in pocket depth than usual care. This long term stability likely reflects habit consolidation and the iterative problem solving embedded in IKAP informed nursing: knowledge is verified, attitudes and self efficacy are strengthened, and practices are rehearsed and adjusted over time rather than taught once. 49 , 53 We recommend a core outcome set that includes both periodontal endpoints and validated psychosocial metrics; full details and suggested timing are shown in Table 3 . Table 3. Recommended clinical & psychosocial outcome measures, timing, and rationale. Outcome (measure) Why it matters (rationale) Recommended measurement timing Ref. Probing depth (PD, mm) Primary disease activity endpoint Baseline; 3, 6, 12 months 49 , 51 , 52 Clinical attachment level (CAL, mm) Structural outcome / long-term Baseline; 6, 12 months 51 , 52 , 53 Bleeding on probing (BOP, % sites) Sensitive inflammatory marker Baseline; 1, 3, 6, 12 months 49 , 50 Plaque Index (PI) Proximal behaviour outcome Baseline; 1, 3, 6 months 33 , 49 Oral hygiene self-efficacy (OHSE or similar) Psychosocial mediator of practice Baseline; 3, 6, 12 months 54 , 55 , 56 Oral health–related QoL (OHIP or equivalent) Patient-centred outcome Baseline; 6, 12 months [ 46 , 50 Open in a new tab Effects on self-management ability and psychosocial metrics The most robust and consistent effects of IKAP-style continuous nursing interventions are observed in self-management constructs and psychosocial metrics. Trials and observational studies that use validated instruments such as oral hygiene self-efficacy scales, the Oral Health Self-Efficacy scale and other periodontal self-care questionnaires report sizable and clinically meaningful improvements in knowledge retention, behavioural adherence, and self-efficacy after IKAP or sustained telehealth nursing interventions. 52 , 54 , 56 These changes are not ephemeral. Longitudinal studies show maintenance of higher self-efficacy scores and better self-rated adherence at 3 to 12 months when reinforcement is ongoing versus when education is delivered only once. 45 , 56 Health literacy gains are another reproducible effect. Continuous nursing programmes that systematically assess patient comprehension, tailor information to literacy level, and provide multimodal educational materials generate larger improvements in objective knowledge assessments and in patients' confidence to perform complex oral hygiene behaviours, such as interdental cleaning and effective powered-toothbrushing. 52 , 53 Improved literacy and confidence permit more accurate self-assessment of disease signs and better timely engagement with professional care when relapse signals appear. Quality of life and psychosocial well-being also improve in a majority of trials that measure these endpoints. Enhanced disease control reduced local inflammation, and the psychological benefits of feeling supported and competent combine to reduce oral health related discomfort and social impacts, and to raise overall oral health related quality of life scores. These psychosocial gains are important because they help close the intention behaviour gap: when patients experience clinical improvement and diminished social burden, positive feedback strengthens motivation to continue good self-care. 46 , 50 This reciprocal reinforcement leads to a virtuous cycle. Better self-management produces measurable reductions in plaque and inflammation which yield symptomatic relief and objective clinical improvement. Positive clinical feedback then enhances attitudes toward oral health, boosts self-efficacy, and reduces ambivalence about daily practices. Over time this loop consolidates into durable habit formation and less frequent need for intensive professional intervention. Empirical evidence for this cycle comes from longitudinal cohorts showing that early gains in self-efficacy predict subsequent maintenance of lower plaque and bleeding levels and a lower probability of attachment loss progression. 49 , 55 In summary, the synthesized evidence supports the proposition that IKAP-based continuous nursing is effective at improving both periodontal indicators and the self-management capabilities that underpin long term disease control. The intervention appears particularly powerful where it combines repeated, tailored education, active skills training, objective feedback, and psychosocial support delivered across a sustained timeframe. Future trials should prioritize rigorous, adequately powered randomized designs with 12 month or longer follow up, standardized measurement of PD and CAL, and incorporation of validated self-management scales to more precisely quantify the clinical and behavioural mediators of benefit. Discussion: towards a new standard of care and challenges The body of recent evidence supports a compelling case that continuous nursing structured around the Information, Knowledge, Attitude, and Practice theory constitutes a superior model for sustaining periodontal health because it aligns behaviour change mechanisms with measurable clinical end points. 52 Randomized and quasi-experimental studies of internet-based nursing and continuous remote follow-up report significant improvements in probing depth, bleeding on probing, and patient self-management scores relative to usual episodic care, indicating that continuous engagement drives clinically meaningful maintenance of periodontal status. 44 , 52 The addition of behaviourally informed counseling techniques such as motivational interviewing amplifies these effects by converting ambivalence into sustained adherence and by increasing patient self-efficacy during supportive periodontal care. 34 , 41 Sensor-enabled oral devices and smart toothbrush systems provide objective, temporally dense measures of home care behaviours that convert subjective reports into actionable data for nurses and clinicians, and randomized trials of intelligent brushing systems demonstrate improvements in plaque and gingival indices when device feedback is integrated into care pathways. 42 , 57 Tele-dentistry platforms and structured virtual check-ins extend the therapeutic alliance beyond clinic walls thereby enabling rapid troubleshooting, reinforcement of skills learned in clinic, and iterative goal resetting that together close the IKAP loop from information to sustained practice. 58 , 59 Economic modelling and value-for-money assessments in preventive and supportive periodontal care suggest that interventions which prevent disease progression and reduce the frequency of advanced interventions have the potential to improve outcomes while lowering long-term costs, a core objective of value-based healthcare. 60 , 61 Taken together these strands argue that IKAP-based continuous nursing is not merely an incremental adjunct but a systems-level reconfiguration that integrates measurement, behavioural science, and chronic care management principles to deliver higher value periodontal services. 52 , 60 Reconciling conflicting findings in the literature requires attention to heterogeneity in intervention design, context, and the degree of human integration with digital tools; trials that deploy apps or devices in isolation without ongoing nursing contact commonly report smaller or inconsistent clinical effects compared with interventions that couple technology with structured human coaching. 61 , 62 This pattern indicates that technology functions best as an amplifier of clinician-delivered behavioural strategies rather than as a substitute for relationship-based care, and that the fidelity of motivational and coaching interventions is a key moderator of clinical impact. 34 , 41 Differences in trial duration, baseline periodontal severity, and outcome selection have also produced apparent contradictions; short trials may document changes in adherence metrics without capturing downstream improvements in attachment loss or tooth retention that accrue over years, which underscores the need for longer-term pragmatic studies. 42 , 63 Furthermore, variance in patient populations, including socioeconomic status, baseline digital literacy, and comorbidities such as diabetes, affects responsiveness to continuous nursing and explains some of the between-study discrepancies. 63 , 64 Several limitations and challenges must be acknowledged before proposing broad adoption of an IKAP-continuous nursing standard of care. 65 The digital divide remains a persistent barrier to equitable implementation because disparities in device access, connectivity, and digital health literacy can exclude vulnerable groups from benefits unless mitigations such as low-tech options and targeted literacy programs are provided. 66 , 67 Data governance, privacy, and algorithmic bias also pose ethical and regulatory challenges when sensor data and AI-driven personalization are incorporated into care pathways, and these issues require transparent governance frameworks and validation across diverse populations. 68 , 69 Patient motivation and sustained engagement are additional constraints because attrition from mHealth interventions is common and is driven by usability problems, perceived lack of relevance, and competing life priorities, which necessitates ongoing behavioural reinforcement and adaptive tailoring. 62 , 70 On the provider side, workforce training, workflow redesign, and reimbursement models that recognize continuous nursing activities are required; without remuneration aligned to remote monitoring, counseling, and data review, adoption will be limited. 71 , 72 Despite these challenges, IKAP-based continuous nursing dovetails with value-based healthcare by emphasizing prevention, measurable outcomes, and the reduction of downstream therapeutic burden. 60 , 61 To realize this potential, future research should prioritize well powered pragmatic trials with economic endpoints, implementation science studies that map equity-sensitive deployment strategies, and interoperability standards that allow device and app data to integrate into electronic health records for seamless care coordination. 63 , 67 If policy makers, payers, and professional bodies align incentives and governance around these pillars, continuous nursing grounded in IKAP could become the new standard for supportive periodontal care by improving clinical outcomes, empowering patients, and delivering better value across health systems. 52 , 60 Cutting-edge frontiers and future directions Personalization through AI and machine learning The next generation of IKAP-informed continuous nursing will increasingly rely on predictive analytics to identify patients at high risk of nonadherence and to tailor the content and timing of interventions dynamically. Recent applied studies show that machine learning models can predict individual adherence trajectories from clinical and behavioural data with usable accuracy, enabling targeted allocation of intensive support to those most likely to relapse. 48 , 73 Translating those capabilities into clinical nursing practice requires integrating structured clinical data, sensor-derived behavioural measures such as smart-toothbrushing logs, and self-reported psychosocial measures into models that output interpretable risk scores and suggested intervention bundles. 47 , 74 Importantly, algorithmic approaches also introduce systematic biases when nonadherence itself affects the training data; recent methodological work warns that naive models trained on observational records can reproduce and amplify disparities unless explicitly corrected. 74 Pragmatic implementations should therefore combine predictive models with human-in-the-loop decision support so that nurses interpret risk signals within the patient context and preserve ethical oversight and shared decision making. 47 Early proof-of-concept efforts in dentistry and allied fields show feasibility for adaptive digital coaching systems that use reinforcement learning to optimize timing and content of messages, which could be mapped directly onto the IKAP cascade by using model outputs to prioritize Information reinforcement, Knowledge checks, attitudinal work, or supervised Practice. 75 , 76 Integration with the oral microbiome A compelling frontier is tailoring continuous nursing interventions to individual oral microbiome profiles, creating a biobehavioural feedback loop in which behavioural prescriptions are explicitly linked to microbial outcomes. The oral microbiome is now recognized as a mechanistic mediator of periodontitis and responds to therapeutic and behavioural perturbations, suggesting that microbial readouts could serve as proximal biomarkers of intervention efficacy. 77 , 78 Hypothetically, patients whose microbiome shows persistence of specific dysbiotic taxa could receive intensified Practice coaching and adjunctive antiseptic regimens, whereas patients whose profiles shift rapidly toward eubiosis might be triaged to maintenance-focused reinforcement. 79 , 80 Operationalizing this idea will require longitudinal, high-resolution microbiome sampling nested within behavioural trials to establish causal chains from Information and Knowledge inputs, through Attitude and Practice changes, to measurable microbial shifts and finally to periodontal endpoints. 77 , 81 Technical and ethical challenges exist: assay standardization, turnaround time compatible with clinical decision windows, cost, and the risk of overfitting behavioural advice to noisy microbiome signals. 77 , 78 Nevertheless, pilot studies linking periodontal therapy to systemic microbial changes provide proof of concept that microbial outcomes are mutable and clinically relevant, which supports further hybrid trials that combine continuous nursing with microbiome-informed personalization. 79 Gamification and behavioural economics Integrating gamification and nudges into IKAP-based continuous nursing offers scalable ways to sustain engagement and accelerate the transition from deliberate Practice to automatic habit. Randomized and quasi-experimental studies of gamified oral health apps demonstrate improvements in brushing duration, frequency, and short term plaque indices, particularly among children and adolescents, indicating that reward structures and immediate feedback can materially change behaviour. 82 , 83 Complementary evidence from behavioural economics shows that low-cost nudges, such as default settings, timely reminders, social comparison, and small incentives, can increase adherence to preventive regimens and improve measurable oral outcomes in school and community settings. 84 , 85 From an IKAP implementation perspective, gamification primarily operationalizes the Practice node by making repetition rewarding and by supplying environmental cues that support habit formation, while well-designed nudges can target Information and Attitude by highlighting personalized benefits and reducing friction. 83 , 85 Future work should move beyond novelty effects by testing retention over many months, examining which game mechanics generalize across age groups and cultures, and combining gamified interfaces with the predictive personalization described above to allocate gamified incentives where they are most cost effective. 82 , 83 Implementation science Scaling IKAP-based continuous nursing across diverse health systems demands rigorous implementation science that addresses workforce training, cost effectiveness, data interoperability, and system-level integration with electronic health records. Qualitative and implementation studies in dental settings identify barriers including heterogeneous EHR functionality, limited interoperability with medical records, and variation in clinic workflow that impede consistent documentation and follow up. 86 , 87 Cost-effectiveness evidence is mixed and context dependent, with recent analyses showing that remote reinstruction can increase service uptake and costs, while other integrated interventions produce favorable value when downstream systemic benefits are considered. 88 , 89 Workforce implications include defining skill mixes and training needs for dental hygienists and therapists to deliver teach-back, motivational interviewing, supervised Practice coaching, and to interpret AI risk outputs; structured training curricula and competency frameworks will be required to ensure fidelity and scalability. 53 , 69 Finally, interoperability with EHRs is essential for closed-loop care: systems must support standardized documentation of IKAP process measures, routing of predictive flags to care teams, and capture of microbial and behavioural biometrics for outcome monitoring. 69 , 86 Implementation research should therefore couple effectiveness trials with hybrid economic and process evaluations so that IKAP innovations are not only efficacious but also affordable, equitable, and implementable at scale. 86 , 90 Conclusion This review compellingly argues that continuous nursing grounded in the IKAP theory represents a transformative approach to periodontal disease management. By systematically addressing the sequential stages of behaviour change, from information delivery to habitual practice, this model effectively bridges the well-documented gap between patient knowledge and sustained self-care action. The synthesized evidence demonstrates that this integrated strategy yields dual benefits: significant improvements in key clinical periodontal indicators and robust enhancements in patients' self-management capabilities and psychosocial well-being. The operationalization of IKAP through pre-clinical, in-clinical, and post-clinical phases, supported by digital tools and tele-nursing, transforms episodic care into a durable therapeutic alliance. While challenges such as the digital divide, workforce training, and reimbursement models need addressing, the potential of this approach to improve patient outcomes and offer greater value to healthcare systems is substantial. Future efforts should focus on large-scale pragmatic trials, implementation science research to ensure equitable adoption, and the integration of emerging technologies like AI and microbiome profiling to further personalize care. Ultimately, adopting IKAP-based continuous nursing promises to redefine the standard of supportive periodontal care, fostering long-term health through empowered patient self-management. Data availability No datasets were generated or analysed during the current study. Author contributions Xiaojie Yao, Ziqing Cheng wrote the main manuscript text and prepared figures, Ziqing Cheng Revise the manuscript. Funding 2024 Changsha Natural Science Foundation “Study on the in vitro antibacterial effect of Centella asiatica sustained-release gel on periodontitis and its therapeutic effect on periodontitis in rats” (No: kq2403179). 2024 Hunan University of Traditional Chinese Medicine Joint Fund Project “Study on the In Vitro and In Vivo Effects, Antimicrobial Properties, and Mechanism of Action of Centella Asiatica Sustained-Release Gel on Periodontitis” (No: 2024XYLH294). Conflict of interest None disclosed. Acknowledgments Although the authors received no financial support, they would like to express their gratitude to the researchers whose articles were used in this study. References 1. Bernabe E., Marcenes W., Abdulkader R.S., Abreu L.G., Afzal S., Alhalaiqa F.N., et al. Trends in the global, regional, and national burden of oral conditions from 1990 to 2021: a systematic analysis for the Global Burden of Disease Study 2021. 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