The effect of individualization of fiberglass posts using bulk-fill resin-based composites on cementation: an in vitro study
- Author:
Rodrigo Barros Esteves LINS
1
;
Jairo Matozinho CORDEIRO
;
Carolina Perez RANGEL
;
Thiago Bessa Marconato ANTUNES
;
Luís Roberto Marcondes MARTINS
Author Information
- Publication Type:Original Article
- Keywords: Cementation; Composite resins; Dentin; Root canal filling materials; Tooth root
- MeSH: Adhesives; Cementation; Composite Resins; Dental Cements; Dentin; In Vitro Techniques; Incisor; Root Canal Filling Materials; Tooth Root
- From:Restorative Dentistry & Endodontics 2019;44(4):e37-
- CountryRepublic of Korea
- Language:English
- Abstract: OBJECTIVES: This study evaluated the bond strength of various fiberglass post cementation techniques using different resin-based composites. MATERIALS AND METHODS: The roots from a total of 100 bovine incisors were randomly assigned to 5 treatment groups: G1, post + Scotchbond Multi-Purpose (SBMP) + RelyX ARC luting agent; G2, relined post (Filtek Z250) + SBMP + RelyX ARC; G3, individualized post (Filtek Z250) + SBMP; G4, individualized post (Filtek Bulk-Fill) + SBMP; G5, individualized post (Filtek Bulk-Fill Flow) + SBMP. The samples were subjected to the push-out (n = 10) and pull-out (n = 10) bond strength tests. Data from the push-out bond strength test were analyzed using 2-way analysis of variance (ANOVA) with the Bonferroni post hoc test, and data from the pull-out bond strength test were analyzed using 1-way ANOVA. RESULTS: The data for push-out bond strength presented higher values for G2 and G5, mainly in the cervical and middle thirds, and the data from the apical third showed a lower mean push-out bond strength in all groups. No significant difference was noted for pull-out bond strength among all groups. The most frequent failure modes observed were adhesive failure between dentine and resin and mixed failure. CONCLUSIONS: Fiberglass post cementation using restorative and flowable bulk-fill composites with the individualization technique may be a promising alternative to existing methods of post cementation.
