科研之友
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摘要
To investigate the capability of dental school faculties and dental students to assess the ideal total occlusal convergences (TOCs), 5 anterior and 12 posterior typodont teeth were prepared with TOCs ranging from 0 to 12 degrees for anterior teeth and -3 to 30 degrees for posterior teeth. The prepared teeth were put into a model with at least one unprepared tooth on each side. 36 faculties and 38 students were asked to identify the prepared teeth with ideal, maximally acceptable or minimally acceptable TOCs and make estimations of the TOC values respectively. Chi-Square test was used to test the difference in accuracy rate between faculties and students. The comparison of estimation capability of tooth TOCs between these two groups was completed by Wilcoxon rank sum test (alpha=.05). 6 degrees for anterior teeth and 9 degrees for posterior teeth were the most frequently chosen ideal TOCs. The majority of the faculties and students offered correct TOC estimations of the anterior teeth. However, both groups tended to underestimate the actual TOCs of the posterior teeth. The results provided by faculties were closer to the actual values of posterior tooth TOCs. Although most of the participants had difficulties in estimating TOC values, clinical experience made some difference to the visual estimation capability. Overall, our study indicates that visual TOC estimation by dental school faculties and students for the anterior teeth is more accurate than that of the posterior teeth.
- 出版日期2018
- 单位上海市口腔病防治院; 上海交通大学
