Adhesive resistance of a copaiba oil-based dentin biomodifier

• Main Authors: Maria Fulgência Costa Lima BANDEIRA (Author), Alinne Lessa FREITAS (Author), Manuela de Souza Cruz MENEZES (Author), Jardel dos Santos SILVA (Author), Gesom Avohai Dias SOMBRA (Author), Eliane Avany Malveira ARAÚJO (Author), Carina TODA (Author), Ana Regina Casaroto MORESCHI (Author), Nikeila Chacon de Oliveira CONDE (Author)
• Format: Book
• Published: Sociedade Brasileira de Pesquisa Odontológica, 2020-01-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

Abstract This study analyzed the effect of prior application of copaiba oil (CO) emulsions as a dentin cleaning substance on microleakage and microtensile adhesive strength. Twenty-five premolars and sixty-four molars were used for microleakage and microtensile assays. For the microleakage assays, specimens with standard class V cavities were divided (n = 5), according to the tested CO emulsions: CO10%X, CO10%Y, and CO10%Z, as well as chlorhexidine 2% (CHX) and distilled water (DW), as positive and negative controls, respectively. Restorations were performed using the Adper Single Bond® and/or Clearfil SE Bond® systems. Cervical, occlusal, distal and mesial sections were assessed for tracer penetration degree at the composite/tooth interface. For the microtensile assay, healthy molars were divided into sixteen groups, in which artificial caries were induced in half of the groups. Dentin surfaces were treated with CO10%X and CO10%Y, CHX and DW. Microtensile bond strength was measured by fixing each sample to the plate of a universal testing machine operated at a speed of 0.5 mm/minute until failure. Dentin treated with CO10%X showed a lower infiltration rate than dentin treated with the other CO emulsions, CHX2% and DW. According to the microtensile assay, both healthy and affected dentin treated with CO10%X and Adper Single Bond® adhesive system presented higher adhesive strength. CO emulsion, used as a dentin biomodifier, interfered positively in microleakage and improved adhesive strength after acid etching in the Adper Single Bond® adhesive system, or before applying the Clearfil SE Bond® self-etching system.

Item Description

1807-3107
10.1590/1807-3107bor-2020.vol34.0001