Comparative Evaluation Of Fracture Resistance Of Endodontically Treated Teeth Restored With Glass Fiber Posts And Zirconia Posts – An In-Vitro Study

Abstract

Aim and Objective: The physical properties of teeth that have undergone endodontic treatment are improved by the use of the various posts. This study compared and evaluated the fracture resistance of endodontically treated teeth restored with glass fiber posts and zirconia posts.

Materials and Methods: Sixty extracted human maxillary central incisors were taken for study out of which forty teeth were subjected to root canal treatment and obturated with gutta-percha. Forty teeth were decoronated and mounted in acrylic blocks including twenty control group teeth. Then, teeth were equally divided into three groups:

(a) glass fiber posts, (b) zirconia posts, and (c) control group. Post space was prepared and a particular post was cemented in post space. The core buildup was made with composite. A compressive load was applied using a universal testing machine and fracture force was measured in MPa. The data were tabulated, and statistical analysis was done using one-way ANOVA, and Tukey’s Post Hoc test was done for intergroup comparison at p-value < 0.05.

Result: The fracture resistance of zirconia posts is more than glass fibre posts. Conclusion: Within the limitation of the study, it can be concluded that the load required to fracture the zirconia custom post was higher compared to the glass fibre post