EFFICACY OF POST LENGTH AND POST MATERIAL ON THE PULL-OUT BOND STRENGTH OF INDIVIDUALLY FORMABLE GLASS FIBER POST VERSUS CUSTOM MADE METAL POST ON ENDODONTICALLY TREATED MANDIBULAR PREMOLAR TEETH (AN IN VITRO STUDY)
Huwari, M., El-Mahallawi, O., El Alaily, I. (2016). EFFICACY OF POST LENGTH AND POST MATERIAL ON THE PULL-OUT BOND STRENGTH OF INDIVIDUALLY FORMABLE GLASS FIBER POST VERSUS CUSTOM MADE METAL POST ON ENDODONTICALLY TREATED MANDIBULAR PREMOLAR TEETH (AN IN VITRO STUDY). EKB Journal Management System, 62(Issue 1 - January (Part 1)), 123-128. doi: 10.21608/edj.2016.92640
M. Huwari; O. El-Mahallawi; I. El Alaily. "EFFICACY OF POST LENGTH AND POST MATERIAL ON THE PULL-OUT BOND STRENGTH OF INDIVIDUALLY FORMABLE GLASS FIBER POST VERSUS CUSTOM MADE METAL POST ON ENDODONTICALLY TREATED MANDIBULAR PREMOLAR TEETH (AN IN VITRO STUDY)". EKB Journal Management System, 62, Issue 1 - January (Part 1), 2016, 123-128. doi: 10.21608/edj.2016.92640
Huwari, M., El-Mahallawi, O., El Alaily, I. (2016). 'EFFICACY OF POST LENGTH AND POST MATERIAL ON THE PULL-OUT BOND STRENGTH OF INDIVIDUALLY FORMABLE GLASS FIBER POST VERSUS CUSTOM MADE METAL POST ON ENDODONTICALLY TREATED MANDIBULAR PREMOLAR TEETH (AN IN VITRO STUDY)', EKB Journal Management System, 62(Issue 1 - January (Part 1)), pp. 123-128. doi: 10.21608/edj.2016.92640
Huwari, M., El-Mahallawi, O., El Alaily, I. EFFICACY OF POST LENGTH AND POST MATERIAL ON THE PULL-OUT BOND STRENGTH OF INDIVIDUALLY FORMABLE GLASS FIBER POST VERSUS CUSTOM MADE METAL POST ON ENDODONTICALLY TREATED MANDIBULAR PREMOLAR TEETH (AN IN VITRO STUDY). EKB Journal Management System, 2016; 62(Issue 1 - January (Part 1)): 123-128. doi: 10.21608/edj.2016.92640

EFFICACY OF POST LENGTH AND POST MATERIAL ON THE PULL-OUT BOND STRENGTH OF INDIVIDUALLY FORMABLE GLASS FIBER POST VERSUS CUSTOM MADE METAL POST ON ENDODONTICALLY TREATED MANDIBULAR PREMOLAR TEETH (AN IN VITRO STUDY)

Egyptian Dental Journal
Article 12, Volume 62, Issue 1 - January (Part 1), January 2016, Page 123-128  XML PDF (362.02 K)
Document Type: Original Article
DOI: 10.21608/edj.2016.92640
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Authors
M. Huwari1; O. El-Mahallawi2; I. El Alaily3
1MDS, Faculty of Oral and Dental Medicine, Cairo University – Egypt
2Professor, Fixed Prosthodontics Department, Faculty of Oral and Dental Medicine, Cairo University, Egypt
3Lecturer, Fixed Prosthodontics Department, Faculty of Oral and Dental Medicine, Cairo University, Egypt
Abstract
Aim: Aim of the present study was to evaluate the efficacy of post length and post material on the pull-out bond strength of individually formable glass fiber post versus custom made metal post on endodontically treated mandibular premolar teeth.
Materials & Methods: Sixty-six extracted human mandibular premolars teeth were endodon­tically treated, they decoronated 2 mm above the cementoenamel junction and randomly divided into two main groups (Group A& B) based on the post materials to be used. Group A: individually formed glass FRC posts (everStick post), Group B: custom made metal post (Ni-Cr). Moreover, samples of each group were divided into 3 subgroups (subgroup 1, 2, 3) (n=22) according to the post length: subgroup I: 14.0 mm; subgroup II: 12.0 mm; subgroup III: 10.0 mm. All of the posts were luted with dual-polymerizing self-adhesive universal resin cement (RelyXUnicem). The sam­ples were subjected to a pull-out bond strength test in a universal testing machine at a crosshead speed of 0.5 mm/min. The results, in newtons, were analyzed with two-way ANOVA and the pair wise Tukey post hoc test (α= .05). Two samples from each group were processed for digital micro­scope observations in order to investigate the mode of failure at the post/cement interface.
Results: Two-way ANOVA showed statistically non-significant difference (P>0.05) between cast metal post group (227.77± 42.40 N) and everStick post group (225.15± 23.65N). Moreover, post length with 14mm recorded the highest statistically significant difference (p<0.05) mean value (278.45± 33.81 N) followed by post length 12mm (241.37± 42.74 N) then post length 10mm re­corded the lowest statistically significant difference (p<0.05) mean value (159.57± 17.53 N).
Conclusion: It can be concluded that the pull out bond strength (debonding force) is directly proportional to post length
Keywords
EverStick post; Cast post; Post length; Pull out test
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