Guan Xin, Beh Yew Hin, Tew In Meei
Department of Restorative Dentistry, The Faculty of Dentistry, The National University of Malaysia, Bangi 50300, Malaysia.
Dent J (Basel). 2024 Sep 25;12(10):302. doi: 10.3390/dj12100302.
Computer-assisted preparation of porcelain laminate veneers (PLVs) using stereolithographic templates has been developed to enhance the accuracy of tooth preparation. However, the digital workflows involved in guided PLV preparation remain inconsistently defined across various practices. Therefore, this scoping review aimed to examine publications on computer-assisted PLV preparation to identify the key stage of digital workflows involved in designing and fabricating stereolithographic templates, as well as to highlight the limitations of various template designs. This scoping review aimed to identify publications on digital workflows for designing and fabricating stereolithographic templates in computer-assisted porcelain laminate veneer preparation. A systematic search on MEDLINE/PubMed, Web of Science and Scopus identified English-language articles published from 2014 to March 2024. Eligible articles focused on digitally designed and fabricated tooth reduction templates for porcelain laminate veneers, excluding conventional tooth preparation procedures for tooth reduction assessment. Seven clinical reports were included, demonstrating various 3D data acquisition techniques for virtual patient generation. All articles described virtual diagnostic wax-ups on digital casts, with two using a virtual articulator. Only five articles documented chair-side mock-ups with resin trial restorations to evaluate planned dental esthetics. Additionally, virtual tooth preparation prior to templates design was included in only four articles. The templates were designed using different software and ranged from simple designs with access windows to complex stacked templates with rotary instrument sleeved windows. Each template design had limitations affecting tooth reduction accuracy. All articles reported printing templates in clear acrylic resin using different technologies. In conclusion, the review highlights a lack of standardization in the digital workflow for designing stereolithographic templates for PLVs. Establishing a sound protocol for designing the tooth reduction templates is essential to ensure the accuracy and consistency of veneer preparation.
利用立体光刻模板进行计算机辅助的瓷贴面（PLV）制备已得到发展，以提高牙齿预备的准确性。然而，在各种实践中，引导式PLV制备所涉及的数字工作流程仍未得到一致定义。因此，本范围综述旨在研究关于计算机辅助PLV制备的出版物，以确定设计和制造立体光刻模板所涉及的数字工作流程的关键阶段，并突出各种模板设计的局限性。本范围综述旨在识别关于计算机辅助瓷贴面制备中设计和制造立体光刻模板的数字工作流程的出版物。在MEDLINE/PubMed、科学网和Scopus上进行的系统检索，确定了2014年至2024年3月发表的英文文章。符合条件的文章重点关注用于瓷贴面的数字设计和制造的牙齿预备模板，不包括用于牙齿预备评估的传统牙齿预备程序。纳入了七篇临床报告，展示了用于虚拟患者生成的各种三维数据采集技术。所有文章都描述了在数字模型上进行虚拟诊断蜡型制作，其中两篇使用了虚拟咬合架。只有五篇文章记录了使用树脂试验修复体进行椅旁模型制作以评估计划中的牙齿美学效果。此外，只有四篇文章包括了在模板设计之前进行的虚拟牙齿预备。模板使用不同的软件设计，范围从带有进入窗口的简单设计到带有旋转器械套筒窗口的复杂堆叠模板。每种模板设计都有影响牙齿预备准确性的局限性。所有文章都报告了使用不同技术在透明丙烯酸树脂中打印模板。总之，该综述强调了在设计PLV立体光刻模板的数字工作流程中缺乏标准化。建立一个完善的牙齿预备模板设计方案对于确保贴面制备的准确性和一致性至关重要。
