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

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. Herein, 40 bovine mandibular incisors were divided into four gro...

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Bibliographic Details
Published in:	The Saudi dental journal Vol. 33; no. 8; pp. 917 - 922
Main Authors:	Duarte Santos Lopes, Lívia, da Silva Pedrosa, Marlus, Beatriz Melo Oliveira, Lara, Maria da Silva Costa, Sandy, Aguiar Santos Nogueira Lima, Livia, Lucisano Botelho do Amaral, Flávia
Format:	Journal Article
Language:	English
Published:	Saudi Arabia Elsevier B.V 01-12-2021 Elsevier
Subjects:	Biomechanical phenomena Dentin Original Post and core technique Resin cements Shear strength Biomechanical phenomena Dentin Shear strength Resin cements Post and core technique
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Summary:	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. 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%). 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). 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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1013-9052 1658-3558
DOI:	10.1016/j.sdentj.2021.09.003