AI Article Synopsis
- The study evaluated the bond strength and tag formation in root dentin using five different self-adhesive cements and compared them to a conventional cement for glass fiber post cementation.
- Results indicated that the conventional cement (Relyx ARC) had the highest bond strength and tag extension both at 24 hours and 12 months after application.
- Over time, there was a general decrease in bond strength for all cements, with different failure modes observed at 24 hours (cohesive failure) and after 12 months (mixed failure).
Article Abstract
Background: Medium-term evaluate the bond strength and tag formation in root dentin using self-adhesive cements Maxcem Elite (MCE), Relyx U200 (RU2), SeT PP (SPP) and Megalink (MGL) compared to conventional cement Relyx ARC (ARC) for glass fibre post cementation.
Materials And Methods: One hundred bovine incisors roots were endodontically treated and divided into 5 groups (n = 20) according to the cementation system: MCE, RU2, SPP, MGL and ARC. All cementation systems were evaluated at 24 h (1) and 12 months (2) after post cementation. Specimens from the cervical, middle and apical thirds of the root were submitted to push-out bond strength test and confocal laser microscopy to verify the dentin penetration. The adhesive failure mode was classified as adhesive, cohesive and mixed. Data were analysed by one-way ANOVA and Tukey tests (α = 5%).
Results: ARC-1 and ARC-12 showed the highest bond strength (P < 0.05). ARC showed the greatest tag extension, regardless of the third (P < 0.05). The most frequent failure mode in the 24-h analysis was cohesive, regardless of the cement used. For the 12-month analysis, mixed failure was the most frequent.
Conclusion: Conventional cement (ARC) showed the highest bond strength and tag extension, regardless of the evaluation period. In all cementation systems, the bond strength decreased after 12 months. © 2023 Australian Dental Association.
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| http://dx.doi.org/10.1111/adj.12988 | DOI Listing |
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