Effect of Sterilization on Bond Strength and Mechanical Properties of Fiber Posts
Yükleniyor...
Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Quintessence Publishing Co Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Purpose: To determine the effects of two different sterilization methods on the pull-out bond strength, flexural strength, and elastic modulus of glass-fiber posts. Materials and Methods: A total of 69 glass-fiber posts were used. The posts were divided into three groups according to applied sterilization method: 1) control, 2) ethylene oxide gas (EOG), and 3) autoclave. The microstructure of three posts from each group was evaluated by SEM and energy-dispersive X-ray spectroscopy (EDS). Thirty glass-fiber posts were used to evaluate pull-out bond strength. The three-point bending test was performed to analyze the flexural strength on another 30 glass-fiber posts. Failure modes were categorized microscopically after the pull-out test. After the three-point bending test, micromorphology at the bending area was examined using SEM. Results: One-way ANOVA indicated no statistically significant differences among the group means in terms of bond strength (p > 0.05), flexural strength (p > 0.05), or elastic modulus (p > 0.05). EDS revealed that the weight percentage of surface oxygen atoms in the EOG- and autoclave-sterilization groups were significantly higher. SEM images were similar. Conclusion: The results of this study show that glass-fiber posts can be sterilized either by autoclave or EOG when necessary, without any negative effect on bond strength, flexural strength, or elastic modulus.
Açıklama
Anahtar Kelimeler
autoclave sterilization, bond strength testing, elastic modulus, ethylene oxide gas sterilization, glass-fiber post
Kaynak
Journal of Adhesive Dentistry
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
21
Sayı
2
