Effect of diameter and length of fiber post on failure resistance of endodontically treated teeth restored with post and core

Authors

Sirirat Ananviriyaporn
Prarom Salimee

Publication Date

2008-09-01

Abstract

Objectives To study the failure resistance of root canal treatment (RCT) teeth restored with post and core using different diameters and lengths of fiber posts. Materials and methods Thirty maxillary central incisors were divided into 3 groups. After RCT-treated, spaces for post were prepared with drill #2. All groups were restored with fiber post (D.T. light-post). The first group was restored with the size that properly fit the canal (post #2). The second group used the post with the same canal length but smaller diameter (post #1). The third group used the post that shorter than the canal length but bigger diameter that fit the cervical part of the canal (post #3). After cementing with resin cement (Panavia F 2.0), core build-up with composite was performed in each specimen, the teeth were embedded in self cure acrylic resin block. The samples were loaded on a universal testing machine with a crosshead speed of 2 mm/min on the palatal surfaces at 90 Ì angles to the long axis of the tooth until failure occurred. Results Failure resistance of group 1, group 2 and group 3 were 108.33 ± 11.59 N, 79.08 ± 12.15 N and 94.87 ± 14.48 N, respectively. ANOVA and Bonferroni test revealed that there was no significant difference of the failure resistance between group 1 and group 3 (p > 0.05). But group 2 was significantly different from the other groups (p < 0.05). No root fractures occurred in any of the experimental groups. Conclusion Root canal treatment teeth restored with fiber post that the diameter properly fit the cervical part of canal, though the length was shorter, were significantly stronger than those restored with the entire length of post but diameter was not fit the canal.

DOI

10.58837/CHULA.CUDJ.31.3.9

First Page

359

Last Page

370

Recommended Citation

Ananviriyaporn, Sirirat and Salimee, Prarom (2008) "Effect of diameter and length of fiber post on failure resistance of endodontically treated teeth restored with post and core," Chulalongkorn University Dental Journal: Vol. 31: Iss. 3, Article 9.
DOI: 10.58837/CHULA.CUDJ.31.3.9
Available at: https://digital.car.chula.ac.th/cudj/vol31/iss3/9