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- Title
Effect of epigallocatechin-3-gallate and thermal cycling on the bond strength of resin cements to the root dentin.
- Authors
Messias, Danielle Cristine; da Silva, Moisés Franco Barbosa; de Faria, Natália Spadini; Dias-Arnez, Tatiane Rocco; Rached-Júnior, Fuad Jacob; Sousa, Ana Beatriz Silva
- Abstract
This study evaluated the effect of epigallocatechin-3-gallate (EGCG) solution and thermal cycling on the bond strength (BS) of fiber posts to the root dentin using two different resin cements (conventional or self-adhesive). One hundred and forty-four bovine roots were endodontically treated. After post space preparation, specimens were randomly divided into six groups (n = 24) according to dentin pretreatment [distilled water, 0.05% EGCG solution or 2% chlorhexidine (CHX) solution] and resin luting agent used for fiber post cementation (RelyX ARC or RelyX U200-3 M ESPE). Then, the samples were separated into two subgroups (n = 12): storage in distilled water at 37 °C for 24 h and thermal cycling (5 °C/55 °C, dwell time 30 s—12,000 cycles) during 6 months. After that, the specimens were subjected to the pull-out BS test (Universal Testing Machine—0.5 mm/min) and the failures pattern was analyzed in a stereomicroscope. According to the BS results (three-way ANOVA, Tukey's test, α = 0.05), the highest values were reported in the group EGCG + RelyX U200, showing significant statistical differences compared to all the other experimental groups. For Control and CHX groups BS values, there was no significant difference (p >.05) between the resin cements. For conventional resin cement, there was no significant difference among treatment solutions (p >.05). The thermal cycling did not influence the BS results (p >.05). As reported by the failure mode analysis, adhesive failure was predominant in all groups. EGCG solution improved the bond strength of self-adhesive resin cement to root dentin.
- Subjects
THERMOCYCLING; BOND strengths; EPIGALLOCATECHIN gallate; DENTIN; TUKEY'S test
- Publication
Odontology, 2021, Vol 109, Issue 4, p854
- ISSN
1618-1247
- Publication type
Article
- DOI
10.1007/s10266-021-00610-7