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논문 기본 정보

자료유형
학술저널
저자정보
Santos Junior Wilton Lima dos (Operative Dentistry Division, Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.) Santi Marina Rodrigues (Operative Dentistry Division, Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.) Lins Rodrigo Barros Esteves (Operative Dentistry Division, Department of Restorative Dentistry, School of Dentistry, Federal University of Alagoas, Campus A. C. Simões, Maceió, Alagoas, Brazil.) Martins Luís Roberto Marcondes (Operative Dentistry Division, Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.)
저널정보
대한치과보존학회 Restorative Dentistry and Endodontics Restorative Dentistry and Endodontics Vol.49 No.2
발행연도
2024.5
수록면
1 - 13 (13page)
DOI
10.5395/rde.2024.49.e18

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Objectives This study was conducted to evaluate the mechanical properties of relined and non-relined fiberglass posts when cemented to root canal dentin using a conventional dual-cure resin cement or a self-adhesive resin cement. Materials and Methods Two types of resin cements were utilized: conventional and self-adhesive. Additionally, 2 cementation protocols were employed, involving relined and non-relined fiberglass posts. In total, 72 bovine incisors were cemented and subjected to push-out bond strength testing (n = 10) followed by failure mode analysis. The cross-sectional microhardness (n = 5) was assessed along the root canal, and interface analyses (n = 3) were conducted using scanning electron microscopy (SEM). Data from the push-out bond strength and cross-sectional microhardness tests were analyzed via 3-way analysis of variance and the Bonferroni post-hoc test (α = 0.05). Results For non-relined fiberglass posts, conventional resin cement exhibited higher push-out bond strength than self-adhesive cement. Relined fiberglass posts yielded comparable results between the resin cements. Type II failure was the most common failure mode for both resin cements, regardless of cementation protocol. The use of relined fiberglass posts improved the cross-sectional microhardness values for both cements. SEM images revealed voids and bubbles in the incisors with non-relined fiberglass posts. Conclusions Mechanical properties were impacted by the cementation protocol. Relined fiberglass posts presented the highest push-out bond strength and cross-sectional microhardness values, regardless of the resin cement used (conventional dual-cure or self-adhesive). Conversely, for non-relined fiberglass posts, the conventional dual-cure resin cement yielded superior results to the self-adhesive resin cement.

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