Analysis of adaptation interface from different resin filling materials

Author(s)

Marcelo de Morais Vitoriano

• Document type: Master's Dissertation
• Press: Bauru.
• Institution: Universidade de São Paulo (USP). Faculdade de Odontologia de Bauru (FOB/SDB)
• Defense date: 2013-06-25

Examining board members

Marco Antonio Hungaro Duarte; Rafael Francisco Lia Mondelli; Rodrigo Ricci Vivan

• Advisor: Marco Antonio Hungaro Duarte

Abstract

This study evaluated microscopically the interface adaptation between sealer and dentin within the root canal, identifying the level of sealing provided by different resin filling materials. 60 single rooted teeth were selected, roots straight with circular or oval anatomy, complete apexes, obtained through donation made by Surgeon Dentists and consented to its use in research by the patient. Subsequently the roots were randomly divided into three groups according to the system obturation: group 1 - Gutta-percha + cement AHPlus, Group 2 - Epiphany + Resilon, Group 3 - Smart Seal obturation system. Then each specimen received a transverse cut with 2 mm thick, with a diamond disc, cutting machine for hard tissue (Isomet ®) under abundant irrigation. After the cuts, slices to 2mm, 4mm, 6mm and 8mm were analyzed by esteriomicroscopy, observing the adaptation area between dentin and sealer, confocal microscopy was utilized to examine the penetration of cement into the dentinal tubules and the presence of gaps. The images were analyzed by software measurement area Image J ®, where the images have been properly calibrated. The results showed a superiority of Smart-seal in the area of cement in cutting 6mm (p <0.05), however inferiority in the penetration of the sealer into the dentinal tubules in sections of 2mm, 6mm and 8mm (p <0.05). Regarding the cracks Smart Seal had a smaller amount of cracks (p <0.05) only the extent of 8mm. It was concluded that although the Smart Seal system presentes expansion and better fit into the dentin walls of the canal, the system showed no satisfactory tubular penetration. (AU)

• FAPESP's process: 11/05332-6 - Analysis of the adaptation interface from different resin sealer materials
• Grantee: Marcelo de Morais Vitoriano
• Support Opportunities: Scholarships in Brazil - Master