Kharouf, Naji and Sauro, Salvatore and Jmal, Hamdi and Eid, Ammar and Karrout, Mohamed and Bahlouli, Nadia and Haikel, Youssef and Mancino, Davide (2021) Does Multi-Fiber-Reinforced Composite-Post Influence the Filling Ability and the Bond Strength in Root Canal? Bioengineering, 8 (12). p. 195. ISSN 2306-5354
![[thumbnail of bioengineering-08-00195-v2.pdf]](http://research.manuscritpub.com/style/images/fileicons/text.png)
bioengineering-08-00195-v2.pdf - Published Version
Download (2MB)
Abstract
The purpose of the present in vitro study was to investigate the bond strength of root canal dentin and the filling ability of a new multi-fiber-reinforced composite post (mFRC) compared to a conventional single fiber-reinforced-composite post (sFRC). Twenty-eight freshly maxillary first permanent single-rooted premolars were instrumented and divided into groups (n = 14). Group 1: single-fiber-reinforced composite (sFRC), group 2: multi-fiber-reinforced composite (mFRC). Bonding procedures were performed using a dual-cure universal adhesive system and resin cement. All specimens were sectioned so that seven discs of 1 mm of thickness were obtained from each root. An optical microscope was used before the push-out test to measure the total area of the voids and to determine the length of the smaller/bigger circumferences. The push-out bond strength (PBS) test was performed using an Instron universal testing machine. Data were then compared by one-way ANOVA on ranks (α = 0.05). The dentin–cement–post interface was observed using scanning electron microscopy (SEM). At the coronal third, a significantly higher bond strength (p < 0.05) was obtained in the sFRC group (44.7 ± 13.1 MPa) compared to the mFRC group (37.2 ± 9.2 MPa). No significant difference was detected between the groups at the middle third (sFRC group “33.7 ± 12.5 MPa” and mFRC group “32.6 ± 12.4 MPa”) (p > 0.05). Voids were significantly lower in the mFRC compared to those observed in the sFRC group (p < 0.05) at the coronal third. Whereas, no significant difference was found at the middle third (p > 0.05) between the tested groups. Filling ability was overall improved when employing mFRC, although such technique might have characteristic limitations concerning the bond strength to dentin.
Item Type: | Article |
---|---|
Subjects: | Science Repository > Engineering |
Depositing User: | Managing Editor |
Date Deposited: | 27 Jan 2023 05:09 |
Last Modified: | 07 Mar 2024 03:58 |
URI: | http://research.manuscritpub.com/id/eprint/1191 |