Document Type
Article
Publication Date
6-2022
Abstract
Purpose: The aim of this study was to categorize the effects of heat on coronal obturation with gutta-percha and sealer using X-ray micro-computed tomography (micro-CT).
Methods: Ten single-rooted, extracted human teeth were shaped using ProTaper NEXT files to size X5 (#50/Taper 6%) with 2.5% NaOCl irrigation. A single ProTaper NEXT X5 gutta-percha point was then inserted with epoxy resin (AH Plus) or tricalcium silicate (EndoSequence BC) sealer (n = 5/group), and cut at the cemento-enamel junction. The teeth were scanned using micro-CT (SkyScan1272) to obtain 11 sagittal 2-D images. Three calibrated raters categorized the coronal 0.5 mm of the images into four categories: “swirled sealer and/or gutta-percha without voids” (I), “uniform voids and sealer/gutta-percha” (II), “non-uniform voids and sealer/gutta-percha” (III), and “swirled sealer and/or guttapercha with voids” (IV). Intra-rater and inter-rater reliability were then calculated. Chi-square tests were conducted to determine the significance of differences in each category between sealers.
Results: The intra-class correlation coefficient was 0.55 (same rater/two different times) and Fleiss’ kappa (different raters/same image) was 0.34. Categories I, II, III, and IV accounted for 16.4%, 4.2%, 30.3%, and 49.1% for AH Plus, and 6.7%, 4.2%, 27.3%, and 61.8% for EndoSequence BC, respectively. Conclusion: Category IV was most common and Category II the least common. Significant differences were evident between sealers for Category I (P < 0.01).
Recommended Citation
Shen, Ivy; Daniel, Joan; Vo, Kali; Ahn, Chul; Primus, Carolyn; and Komabayashi, Takashi, "Use Of Micro-CT To Examine Effects Of Heat On Coronal Obturation" (2022). Dental Medicine Faculty Publications. 19.
https://dune.une.edu/cdm_facpubs/19
Comments
This article was originally published in Journal of Oral Science:
Shen I, Daniel J, Vo K, Ahn C, Primus C, Komabayashi T. Use of micro-CT to examine effects of heat on coronal obturation. Journal of Oral Science. 2022; advanced publication, June 2022. doi.org/10.2334/josnusd.22-0013
The copyright of this paper belongs to the Journal of Oral Science, Nihon University School of Dentistry; placed here with permission.
Authors Shen, Daniel, and Vo were UNE Dental Medicine students at time of research.