Impact of cavity size on bond strength of resin sealants - S. mutans study

Abstract

Purpose: To evaluate the bonding strength to push out of resinous sealants in dentin cavities of different diameters. Materials and methods: A double-blind, randomized, in vitro study with 60 bovine incisors (n = 10 test specimens per group) was performed in a longitudinal direction using a high concentration, double-sided diamond cutting disc for obtaining a slice of enamel / dentin 1 mm thick. Restorations were then made with two different resin sealants - Fluroshield® (gold standard) and Ionoseal® - in wells with diameters of 3, 4 and 5 mm. After 2 months of storage in water, the specimens were submitted to the push-out resistance test. Results: The evaluated sealants showed similar bond strength values (p = 0.357). Likewise, the diameter of the wells did not interfere in the bond strength values of the resin sealants evaluated (p = 0.068). Conclusion: It is possible to seal cavitated lesions in Latinoamericanathe external half of dentin with diameters of 3, 4 and 5 mm with different resinous sealants, since the materials presented similar resistance when applied to the push out test.

Keywords

• Pit and Fissure Sealants
• Dental Caries
• Material Resistence