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CC BY-NC-ND 4.0 · European Journal of General Dentistry 2020; 9(03): 122-128
DOI: 10.4103/ejgd.ejgd_25_20
Original Article

Evaluation of Abutment Parallelism and Path of Withdrawal Using Three Intra- and One Extra-Oral Methods: A Survey and In vitro Study

Mohammed Sayed
Department of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
,
Harisha Dewan
Department of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
,
Manal Mubaraki
Department of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
,
Zahra Khubrani
Department of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
,
Sabreen Hummadi
Department of Prosthetic Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
,
Carlos Alberto Jurado
1   Division of Digital Dentistry, A. T. Still University Arizona School of Dentistry and Oral Health, Mesa, Arizona
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Abstract

Purpose: The purpose of this study is to evaluate four different methods used to examine preparation taper and relative parallelism of the prepared abutment teeth. Materials and Methods: A total of 12 artificial teeth were prepared simulating six sets of prepared abutments. Proximal walls of the premolars in all sets were prepared parallel and 90° to the occlusal plane, whereas walls of the second molars were prepared either 0°, 20°, or 45° to the long axis of the premolar preparation. A total number of 210 participants were involved in the study. All data of the taper evaluation and responses to the questionnaire were coded and entered into an Excel Spreadsheet file. Statistical analyses of the participants' responses were performed using the Chi-square test with P < 0.05 was considered statistically significant. Results: No significant difference was found between the educational levels relative to their responses to level of difficulty, sensitivity, skills, and technical demands for the four techniques. The intraoral mirror technique in the mandibular arch was found to be statistically significantly (P < 0.05) better. The surveyor technique in the maxillary arch was found to be statistically significantly (P < 0.05) better. The highest percentage of faculty members (50%) chose dental surveyor (DS) as the most preferred technique to be included into the academic curriculum. Conclusions: The DS was more favored among the respondents across all educational levels. This technique presented high potential in accurately evaluating tooth preparation in comparison to the intraoral techniques.

Keywords

Dental surveyor - hand piece - intra-oral mouth mirror - photographic mirror

Financial support and sponsorship

Nil.




Publication History

Article published online:
01 November 2021

© 2020. European Journal of General Dentistry. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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