Effect of Different Modalities of Cryotherapy on Post-Operative Pain in Patients With Symptomatic Irreversible Pulpitis

Problem statement: The post-operative pain after endodontic treatment. aim of study: The study is aiming to compare postoperative pain after submucosal cold saline injection (submucosal cryotherapy) (SMC) versus intra-canal cryotherapy (ICC) in mandibular single rooted premolars with symptomatic irreversible pulpitis with symptomatic apical periodontitis (SAP). The material and methods: Subjects and methods: sixty patients will be randomly divided into three groups: the SMC group, the ICC group, and the control group. The patients' postoperative pain will be recorded at 12, 24, and 48 hours postoperatively by questioning them. Quantification of substance P will be done using an ELISA test from peri-radicular fluid swab.