Lai Pei-Ling, Liu Chih-Te, Fu Po-Sung, Chen Jen-Hao, Lan Ting-Hsun, Wang Jen-Chyan, Hung Chun-Cheng
School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
Division of Prosthodontics, Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
J Dent Sci. 2024 Dec;19(Suppl 2):S136-S142. doi: 10.1016/j.jds.2024.07.023. Epub 2024 Aug 16.
BACKGROUND/PURPOSE: SimEx-Plus (EPED. Inc) was already a mature augmented reality (AR) dental training simulator that allowed students to have a high quality dental education practice. Now the EPCAD software has been further developed into a comprehensive computer-aided design software. It helps relevant professionals learn how to create digital fixed prosthesis in a virtual environment. This study used the newly developed EPCAD software that was integrated within the SimEx-Plus to design dental restorations then digital output milling restorations. We hope that the SimEx-Plus AR dental training simulator can achieve the multi-purpose function in one machine.
A right maxillary central incisor was prepared in the standard dental model. The restorations were designed by EPCAD software integrated with the SimEx-Plus and milled by a 4-axis dental milling machine (N4+, vhf camfacture AG). The internal gap of the restoration was evaluated.
The internal gaps of the crowns set on the right maxillary central incisor were among 68.27-89.80 μm. The different setting for digital output did not influence the internal gap ( 0.05, One-Way ANOVA). However, the internal gap on the palatal side was larger than that on the labial, mesial, distal, and incisal surfaces ( < 0.05, One-Way ANOVA).
The new software EPCAD that was integrated within the SimEx-Plus AR dental training simulator could design restorations, and the designed restorations had good internal gap for clinical use. The professionals can learn tooth preparation and digital restoration fabrication by the SimEx-Plus AR dental training system.
背景/目的：SimEx-Plus（EPED公司）已是一款成熟的增强现实（AR）牙科训练模拟器，可让学生进行高质量的牙科教育实践。如今，EPCAD软件已进一步开发成一款综合计算机辅助设计软件。它帮助相关专业人员学习如何在虚拟环境中创建数字化固定修复体。本研究使用集成在SimEx-Plus内新开发的EPCAD软件来设计牙齿修复体，然后进行数字化输出铣削修复体。我们希望SimEx-Plus AR牙科训练模拟器能实现一机多用功能。
在标准牙科模型上制备一颗右上颌中切牙。通过与SimEx-Plus集成的EPCAD软件设计修复体，并由一台四轴牙科铣床（N4+，vhf camfacture AG）进行铣削。评估修复体的内部间隙。
右上颌中切牙上设置的冠的内部间隙在68.27 - 89.80μm之间。不同的数字化输出设置不影响内部间隙（P > 0.05，单因素方差分析）。然而，腭侧的内部间隙大于唇侧、近中、远中及切端表面的内部间隙（P < 0.05，单因素方差分析）。
集成在SimEx-Plus AR牙科训练模拟器内的新软件EPCAD能够设计修复体，且设计的修复体具有良好的内部间隙可供临床使用。专业人员可通过SimEx-Plus AR牙科训练系统学习牙体预备和数字化修复体制作。
