Assessment of a developed pig cadaver model for teaching crown lengthening surgical procedures

Jinsheng Zhong; Dong Shi; Cui Wang; Min Zhen; Yiping Wei; Ziyao Han; Wenjie Hu; Kwok-Hung Chung

doi:10.7717/peerj.13421

Assessment of a developed pig cadaver model for teaching crown lengthening surgical procedures

PeerJ. 2022 Jun 1:10:e13421. doi: 10.7717/peerj.13421. eCollection 2022.

Authors

Jinsheng Zhong^#¹, Dong Shi^#¹, Cui Wang¹, Min Zhen¹, Yiping Wei¹, Ziyao Han¹, Wenjie Hu^{1

2}, Kwok-Hung Chung³

Affiliations

¹ Department of Periodontology, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China.
² NHC Research Center of Engineering and Technology for Computerized Dentistry, Beijing, Beijing, China.
³ Department of Restorative Dentistry, University of Washington, Seattle, United States of America.

^# Contributed equally.

Abstract

Background: Information regarding using a pig cadaver model for teaching purposes in dentistry is limited, especially for periodontal surgery procedures. The aim of this study was to assess the feasibility and efficacy of teaching crown lengthening surgical procedures using a prepared pig cadaver model.

Methods: Mandibles of slaughtered pigs with subgingival crown fracture defects on two premolars and two molars on each side were prepared as periodontal surgery teaching cases. A resident group (n = 20) and an instructor group (n = 18) participated in assessing the efficacy of the model by completing questionnaires before and after training sessions. Data was either assessed descriptively or analyzed statistically with Wilcoxon signed-rank test with the significance level at α = 0.05.

Results: Results revealed that all the knowledge points showed statistically significant improvements (p < 0.05) except for the procedure to determine the quantity of bone removal during osteotomy procedures. Most residents rated the efficacy of the model obtained with 9.0 out of 10 scale. The data of effectiveness of the pig cadaver model from the instructor group ranged from 7.4 ± 1.4 to 9.0 ± 1.0.

Conclusion: Results of this study support feasibility in using prepared pig cadaver models to teach crown lengthening surgical procedures to postgraduates.

Keywords: Animal model; Crown lengthening surgery; Dental education.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Animals
Cadaver
Crown Lengthening* / methods
Crowns*
Swine

Grants and funding

This work was supported by the Capital foundation for Clinical Characteristics and Application Research (No. Z131107002213174) and the Peking University School and Hospital of Stomatology Teaching Reform Program (No. 2013-ZD-09). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.