Date of Award
2016
Embargo Period
8-1-2024
Document Type
Thesis
Degree Name
Master of Science in Dentistry
Department
Oral Rehabilitation
College
College of Dental Medicine
First Advisor
Timothy Rohde
Second Advisor
Joseph E. Assad
Third Advisor
Robert P. Bethea
Abstract
Introduction: The aim of this in vitro study was to compare the incidence of unacceptable fill lengths in canals of various sizes that were prepared with the WaveOne (WO) files (small: 21/.06; medium: 25/.08; large: 40/.08) and obturated with the corresponding thermoplastic carrier-based obturators. Methods: Extracted, mature, patent, human incisors with a single, straight canal (<20°) were instrumented according to manufacturer’s instructions until there were 20 samples per file size. The groups included: Group S: WO size “small”, Group M: WO size “medium”, Group L: WO size “large” (n=20 with 80% power). Samples were then obturated with corresponding WO thermoplasticized carrier-based obturators per manufacturer’s instructions. Extension of gutta-percha was assessed radiographically and clinically under a dental operating microscope by two calibrated examiners. Results were statistically analyzed using the Fisher’s exact test and a significance value of P =.05. Results: Radiographically, the incidence of overextension was 35%, 30%, and 60% for Groups S, M, and L, respectively. The incidence of acceptable fill lengths was 65%, 70%, and 40% for Groups S, M, and L, respectively. Clinically, the incidence of overextension was 50%, 60%, and 55% for Groups S, M, and L, respectively. The incidence of acceptable fill length was 50%, 40%, and 45% for Groups S, M, and L, respectively. No sample was considered underextended, regardless of the method of assessment. There was no statistically significant difference in the incidence of overextension for the various canal sizes, based on both radiographic and clinical assessment. Radiographic assessment tended to underestimate the incidence of overextension as compared to clinical assessment. Conclusions: Canal size did not have a significant effect on the incidence of overextension when using the WaveOne file system and thermoplasticized carrier-based obturators.
Recommended Citation
Corden, Alayna C., "The Effect of Canal Size on Fill Length Using the WaveOne File System and Carrier-Based Obturators" (2016). MUSC Theses and Dissertations. 390.
https://medica-musc.researchcommons.org/theses/390
Rights
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