Oral Health and Dental Management

Effect of air abrasion techniques on marginal adaptation of class V cavity restored with direct esthetic materials

39^th Asia-Pacific Dental and Oral Care Congress

October 26-28, 2017 Osaka, Japan

Abdullah Abdulqader Haqash

University of Western Australia, Australia

Posters & Accepted Abstracts: Oral Health Dent Manag

Abstract:

Objective: Th e aim of this study was to evaluate the eff ect of air abrasion on marginal integrity of class V cavity restored with direct esthetic materials. Methods: A total number of 150 sound human posterior teeth were used. Th ey were divided into two subgroups (n=75) according to the used restorative material (A1: low shrinkable composite resin (P90) and A2: Ketac nano ionomer (N100)). Each group was divided into fi ve groups (n=15) according to the cavity preparation technique (B1: Conventional bur, B2: Small size alumina particles with low pressure, B3: Small size alumina particles with high pressure, B4: Large size alumina particles, with low pressure and B5: Large size alumina particles with high pressure). Each subgroup was further divided into three subgroups (n=5) according to the storage time (C1: Immediately, C2: Th ree months and C3: Six months). Marginal integrity was measured using scanning electron microscope. Two-way analysis of variance was used to compare the mean values of marginal gaps for both enamel and dentin margins. Student�??s t-test was used to compare the mean values of marginal gaps for each group. Results: It was found that; largest gap was detected for group A2B1C3, while the smallest gap was detected for group A1B5C1. Conclusion: Using of air abrasion technique with large size alumina particles under high pressure resulted in better marginal adaptation