Microleakage analysis of dental caries lesions sealed with flow resin and compared to microhybrid resin restorations in dentin

• Main Authors: Amanda de Albuquerque VASCONCELOS (Author), Juliana Tietbohl de Almeida REIS (Author), Bianca Fiorentin MOURA (Author), Daniela Cavalcante GIRÃO (Author), José Carlos Pettorossi IMPARATO (Author), Sérgio Luiz PINHEIRO (Author)
• Format: Book
• Published: Faculdade São Leopoldo Mandic, 2018-06-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.
• Notes: http://dx.doi.org/10.1590/1981-863720180002000063343; 0103-6971; 1981-8637
• Keywords: Dental caries; Dental leakage; Methylene blue; Pediatric dentistry; Tooth deciduous; Dentistry; RK1-715
• Source: RGO: Revista Gaúcha de Odontologia, Vol 66, Iss 2, Pp 141-146 (2018)

Objective: To evaluate the sealing of cavities of dentinal occlusal caries lesions, reproduced in vitro, with flow resin compared to cavity restorations presenting healthy dentin using microhybrid composite resin. Methods: The sample consisted of 27 healthy deciduous molars where cavities of approximately 2 mm in the fossa region were performed and occlusal cleft of each tooth were sealed, impermeabilization was performed and the sample was randomly divided into 2 groups: group I underwent cariogenic challenge and occlusal sealing with resin flow. The teeth of group II were restored with microhybrid composite resin. The teeth were immersed in 5% methylene blue for 8 hours at 37° C and washed until all the dye was removed from the surface. The teeth were sectioned in the mesio-distal direction. The penetration of the dye was evaluated: 0- no penetration; 1- dye penetration up to 1/3 of the restoration; 2- dye penetration up to 2/3 of the restoration depth; 3 - penetration of dye into the pulp wall. The results were analyzed by the Biostat 4.0 program. Descriptive analysis and the mode among the examiners submitted to the Mann-Whitney test. Results: There was no significant difference in microleakage between restoration performed in healthy dentin with microhybrid composite resin or maintenance of infected dentin in primary teeth sealed with resin flow (p = 0.6035). Conclusion: It was concluded that the marginal infiltration of primary molars sealed with microhybrid composite resin and resin flow was not influenced by the removal -or not -of the carious tissue or the material used.