clinical performances of 3-different tooth-colored restorative materials in class-ii cavities

Conditions: Caries,Dental

Summary: the goal of this clinical trial comparatively investigate the clinical performances of 3 different tooth-colored restorative materials in the treatment of class ii cavities after 6 months and one year.

high plaque accumulation at the proximal surfaces of posterior teeth can lead to the development of caries and the necessity of dental treatments.the complexity of application methods for resin composites could influence the risk of secondary caries due to bacterial microleakage.in modern dentistry, simplified, esthetic, and satisfactory restoration of tooth decay has led to innovative material developments.rapidly cured restorative materials applied in large increments with self-adhesive properties became an important solution for easy and effective applications. restorative materials with bioactive or caries-protective abilities have been introduced, such as glass hybrid materials. recently, to overcome the limitations of restorative materials, it was attempted to add caries-protective ions, especially alkaline and alkaline earth ions, such as calcium, in addition to phosphate or fluoride. this newly introduced material contains alkalizing properties due to the release of hydroxyl ions. in 2016, ivoclar vivadent developed a new restorative material consisting of a powder and a liquid part and commercially named this product "cention n". cention n has bioactive properties like glass ionomer cements. it has been developed to prevent demineralisation by neutralising acids through ion release. it contains alkaline fillers. therefore, a new classification as "alkasites" has emerged. one lesion in each patient will be randomly assigned to be restored using either the gc gradia direct posterior, cention n and equia forte ht. the adhesive, gc solare universal bond will be used for adhesive procedures. the clinical procedure for the restorations will be performed by a single operator. the restorations will be evaluated by two calibrated examiners at baseline and at 6, 12, months in accordance with the fdi criteria. data will be statistically analyzed using the chi-square and fischer's exact tests (p \< 0.05).

Eligibility criteria:
inclusion criteria: * healthy individuals who do not have any systemic disease that prevents restorative treatment * individuals between the ages of 18-65 * brushing your teeth twice a day * having at least 20 teeth in occlusion and at least 3 approximal lesions with antagonist teeth in the opposite arch * volunteer individuals who agree to participate in the research and sign the informed consent form and who have undergone initial periodontal treatment will be included in the study. exclusion criteria: * pregnant or breastfeeding women * individuals with advanced periodontal disease * individuals using removable partial dentures * individuals with bruxism * individuals with malocclusion * patients with known allergies to resin-based restorative materials and bonding agents * patients with a history of allergy to local anesthesia * endodontic treatment, teeth that need pulp capping or endodontic treatment is available

Keywords: alkasite-based posterior resin composite class ii restoration glass hybrid