Restor Dent Endod.  2019 Nov;44(4):e37. 10.5395/rde.2019.44.e37.

The effect of individualization of fiberglass posts using bulk-fill resin-based composites on cementation: an in vitro study

• Lins RB
• Cordeiro J
• Rangel CP
• Antunes TB
• Martins LR

• KMID: 2463465
• DOI: http://doi.org/10.5395/rde.2019.44.e37

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.

Keyword

Cementation; Composite resins; Dentin; Root canal filling materials; Tooth root

MeSH Terms

Adhesives
Cementation*
Composite Resins
Dental Cements
Dentin
In Vitro Techniques*
Incisor
Root Canal Filling Materials
Tooth Root
Adhesives
Composite Resins
Dental Cements
Root Canal Filling Materials