Evaluation of Glass Ionomer With Advanced Glass Hybrid Technology Versus Resin Modified Glass Ionomer in Adult Patients With Carious Cervical Lesions After One Year

The goal of this \[type of study: Randomized clinical trial\] to compare the clinical performance of using glass ionomer with advanced glass hybrid technology (AGH) in cervical carious lesion, versus Resin modified glass ionomer (RMGI) using esthetic and mechanical properties according to FDI criteria over one year. in adult patients with cervical carious lesion. The main question it aims to answer are: • Will the use of glass ionomer with advanced glass hybrid technology, achieved through introduction of ultra-fine highly reactive glass and high-molecular weight polyacrylic acid powders within conventional glass ,or Resin Modified Glass Ionomer have better mechanical and estheic properties over one year in adult patients with cervical carious lesions ? Participants will be assessed for medical and dental histories first. Then an examination of the patients will be done using visual inspection by using a dental mirror and probe. Eligible patients according to inclusion and exclusion criteria will be informed about all procedures with follow up time if they accept, their signature on written informed consents will be obtained. Eligible participants will be randomly divided into two groups according to the type of restoration that will be received after class V cavity preparations for carious cervical lesions. Patients will be given local anaesthesia (Mepecaine - L Cartridges) as required, and the teeth will be isolated. A No. #330 bur (MANI, INC, Japan) in a high-speed hand piece with air/water coolant will be used to prepare class V cavity. Sharp excavators of suitable size were used to excavate soft carious lesions in dentin. the prepared cavity will be isolated with rubber dam. The first group (A) will be received resin modified glass ionomer restorative material and the second group (B) will be received advanced glass hybrid glass ionomer . Each restoration will be evaluated for clinical parameters after finishing and polishing at baseline and regular recal