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- Title
Can the size and the luting material influence in the bond strength of the fiberglass post to dentin?
- Authors
Custódio de Lima, Leonardo; Soares Miranda, Jean; Almeida de Carvalho, Ronaldo Luís; Binato Junqueira, Rafafel; Furtado de Carvalho, Rodrigo; Tomomitsu Kimpara, Estevão
- Abstract
Aim: To evaluate the influence of lengths and different luting agents on the bond strength of fiberglass posts' adhesion to dentin. Methods: Sixty single-root bovine teeth were endodontically treated and included in polyether and acrilyc resin to simulate a periodontal ligament. These were divided into 6 groups according to the post lengths (6, 10 or 14 mm) and luting agents (self-adhesive dual resin cement - U; or etch-and-rinse dual resin cement - A): U6, U10, U14, A6, A19, and A14. All fiberglass posts were cemented according to manufacturer instructions. After this, mechanical aging was performed (1.2x106 cycles; 4 Hz, 90 N). The push-out specimens were then conducted (2.0 ± 0.1 mm), with the test executed in a universal machine (10 kgf at 0.5 mm/min). Data obtained were submitted to the Kruskal-Wallis and Dunn's test. Results: No statistically significant difference was observed in bond strength between the groups due to the type of luting agent (p > 0.05). However, the isolated post-length factor showed significantly different results for the U groups (p < 0.05). The U10 group showed similar union values to U6 but statistically inferior to U14. Conclusion: bond strength of fiberglass posts of the same length as the dentin presented no differences according to the luting agent, but the post-length property influenced the bond strength when self-adhesive resin cement was used.
- Publication
Archives of Dental Science / Arquivos em Odontologia, 2020, Vol 56, p1
- ISSN
1516-0939
- Publication type
Article
- DOI
10.7308/aodontol/2020.56.e14