Dentin Sealing and Bond Strength Evaluation of Hema-Free and Multi-Mode Adhesives to Biomodified Dentin

Author(s)

Renata Bacelar-Sá ^[1] ; Marcelo Giannini ^[2] ; Glaucia Maria Bovi Ambrosano ^[3] ; Ana Karina Bedran-Russo ^[4]

Affiliation

^[1] Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry, Dental Materials Division - Brasil

^[2] Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry, Dental Materials Division - Brasil

^[3] State University of Campinas. Piracicaba Dental School. Department of Social Dentistry, Biostatistics Division - Brasil

^[4] University of Illinois at Chicago. Department of Restorative Dentistry, College of Dentistry - Estados Unidos

• Document type: Journal article
• Source: Brazilian Dental Journal; v. 28, n. 6, p. 731-737, 2017-12-00.

Abstract

Abstract This study evaluated the effect of dentin biomodification on the bond strength (BS) and sealing ability (SA) of HEMA-free and multi-mode adhesives after 24 h and 6 months of water storage. Four adhesives were tested: two multi-mode (Scotchbond Universal - SU, and Prime & Bond Elect - PB) and two HEMA-free (All-Bond 3 - AB, and G-Aenial - GA). Human third molars were selected and dentin was treated with two cross-linking agents (5% glutaraldehyde and 6.5% proanthocyanidin-rich grape seed extract - PACs) for 10 min or kept untreated (control group) (n=6). Teeth were sectioned and prepared for BS test and SA analysis. The SA measurements were taken with the presence of smear layer (minimum permeability), EDTA treatment (maximum permeability), PACs application, adhesive application and after 6 months of water storage. BS data were analyzed by Proc Mixed and Tukey-Kramer test (α=5%). PACs application increased the BS for all adhesives tested at 24 h. However, BS decreased for SU and AB after six months. In general, multi-mode adhesives (SU and PB) did not differ from AB HEMA-free. GA presented the lowest BS values at both times of evaluation. Dentin permeability was reduced after PACs application and remained the same after 6 months, regardless adhesive application. PACs can increase the BS regardless the type of adhesive, however only for PB and GA the BS kept stable after 6-months of water storage. PACs was able to seal the dentin as the minimum permeability and also remained stable after 6 months. (AU)

• FAPESP's process: 11/11415-1 - Study of dentin-HEMA-free adhesive bonding: dentin sealing evaluation, micropermeability and immediately and long lasting bond strength to dentin.
• Grantee: Renata Bacelar Cantanhede de Sá
• Support Opportunities: Scholarships in Brazil - Doctorate