Comparative Evaluation of Fracture Resistance in Custom Made And Prefabricated Posts.
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 16, Issue 12
Abstract
Introduction: Badly mutilated teeth presents a challenge for the clinician to determine whether tooth is to be managed endodontically by performing root canal treatment or surgically by undergoing extraction. Pre fabricated posts poses the advantage of saving precious chair time of dentist where as erodes excessive dentine leading to weakening of sound tooth structure. Custom made posts are technique sensitive; can be prepared directly in mouth (direct technique) or in the model obtained from the patient (Indirect technique). The purpose of the present study is to study the fracture resistance of prefabricated and custom posts. Materials & Method: 10 prefabricated posts and 10 custom made posts were used in the study. For prefabricated posts, posts of size 2 (11 cm in length and 2.5 mm in width) were used in the study. Impression of prefabricated post was made in addition silicone putty to fabricate the index and casting was carried out using Cr-Co-Ni alloy. All the samples were placed in distilled water for 2 days and loaded for thermocycling of 6000 cycles with 1 minute interval. The head of the universal testing machine was placed at cross sectional speed of 5mm/minute until posts tested were fractured. All the data were recorded and data was analyzed statistically. Results: In intergroup comparison between the group 1 and group 2, Group 2 recorded mean value of 326.19 ± 20.64 kg where as group 1 recorded mean value of 222.8 ± 56.58 kg. Results were interpreted and one way analysis of variance was carried out. Conclusion: Custom made posts was found to be more fracture resistant than their counterpart prefabricated posts
Authors and Affiliations
Rajat R khajuria, Mukesh kumar, Dr. Romil Safaya, Dr. Nauseen Hajira, Dr Rishav singh
Keywords
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