3D 打印牙用于龋齿挖除。

3D-printed tooth for caries excavation.

机构信息

Department of Prosthodontics, University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany.

出版信息

BMC Med Educ. 2024 Oct 31;24(1):1243. doi: 10.1186/s12909-024-06230-3.

DOI:10.1186/s12909-024-06230-3

PMID:39482738

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11529318/

Abstract

BACKGROUND

To date, no suitable model tooth has been available for all standard restorative and prosthodontic procedures. To fill this gap, a realistic multilayer tooth with enamel, dentin, integrated caries, pulp, and electrometric and X-ray imaging abilities was developed. The aim of this study was to test the printed tooth while focusing on caries excavation and pulp capping.

METHODS

Based on micro-CT data, a tooth was designed and produced via 3D printing. A total of 396 teeth were tested and evaluated by 66 fourth- and fifth-year students experienced in caries excavation at standard typodonts, extracted teeth and patients. They excavated the caries and capped the pulp on six teeth and rated them in a questionnaire.

RESULTS

Compared with natural teeth, the printed teeth were generally rated positively and significantly better in all criteria than typodonts used previously (p < .001). They were rated as a suitable training option (Ø 2.3 ± 0.9) with fair examination conditions (Ø 2.1 ± 0.8) and easy to use (Ø 2.0 ± 0.8). Subjective learning success was also significantly greater (Ø 2.3 ± 0.9) than that of standard typodonts (Ø 3.2 ± 1.1) (p < .001). In general, the students desired more exercises with 3D-printed teeth for their studies (Ø 1.8 ± 0.8).

CONCLUSIONS

Multilayered 3D-printed teeth were successfully tested and can improve and extend the teaching methods used for caries excavation and pulp capping. Its other abilities will be tested in subsequent studies.

YEAR OF THE STUDY

摘要

背景

迄今为止，尚无适用于所有标准修复和修复体程序的合适模型牙。为了填补这一空白，开发了一种具有釉质、牙本质、综合龋、牙髓、电测和 X 射线成像能力的逼真多层牙齿。本研究旨在测试所打印牙齿，重点关注龋蚀的挖掘和牙髓覆盖。

方法

基于微 CT 数据，通过 3D 打印设计和制作牙齿。共有 396 颗牙齿接受了 66 名在标准牙模型、离体牙和患者身上具有龋齿挖掘经验的四年级和五年级学生的测试和评估。他们在六颗牙齿上进行了龋蚀挖掘和牙髓覆盖，并在问卷中对其进行了评分。

结果

与天然牙齿相比，所打印牙齿在所有标准方面的总体评价均为正面，且明显优于之前使用的牙模型（p<.001）。它们被评为合适的培训选择（Ø2.3±0.9），具有公平的检查条件（Ø2.1±0.8）和易于使用（Ø2.0±0.8）。主观学习成功率也明显更高（Ø2.3±0.9），高于标准牙模型（Ø3.2±1.1）（p<.001）。总的来说，学生希望在学习中使用更多的 3D 打印牙齿进行练习（Ø1.8±0.8）。