Push-out bond strength and failure mode of single adjustable and customized glass fiber posts

• Main Authors: Lívia Duarte Santos Lopes (Author), Marlus da Silva Pedrosa (Author), Lara Beatriz Melo Oliveira (Author), Sandy Maria da Silva Costa (Author), Livia Aguiar Santos Nogueira Lima (Author), Flávia Lucisano Botelho do Amaral (Author)
• Format: Book
• Published: Elsevier, 2021-12-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

Purpose: To evaluate the push-out bond strength (PBS) and failure mode of single adjustable (SAP) and customized (CP) posts cemented to root canal dentin using conventional (RelyX Ultimate) or self-adhesive (RelyX U200) dual-cure resin cements. Methods: Herein, 40 bovine mandibular incisors were divided into four groups (n = 10): SAP cemented with RelyX Ultimate (SAP-UT), SAP cemented with RelyX U200 (SAP-U2), CP cemented with RelyX Ultimate (CP-UT), and CP cemented with RelyX U200 (CP-U2). PBS and failure modes were analyzed. Three-way repeated measures ANOVA test followed by Tukey's test and Fisher-Freeman-Halton exact test were used for data analysis (α = 5%). Results: The PBS values for SAP (p < .05) were higher than those for CP and were not influenced by the root third and resin cement (p > .05). When conventional resin cement was used, the SAP showed significant differences compared to CP (p < .05). When cemented with RelyX Ultimate, a higher prevalence of mixed and adhesive failures for SAP and CP, respectively, was observed (p < .05). For the self-adhesive resin cement, the failures were mostly adhesive (p < .05). Conclusion: SAP showed better performance than CP. The root third and resin cements did not influence the PBS. The most prevalent failures were adhesive and mixed.

Item Description

1013-9052
10.1016/j.sdentj.2021.09.003