Keiichiro Watanabe, DDS, PhD, Department of Orthodontics and Dentofacial Orthopedics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan.
Antonin Tichy, DDS, PhD, Institute of Dental Medicine, First Faculty of Medicine of the Charles University and General University Hospital in Prague, Prague, Czech Republic.
Oper Dent. 2023 Sep 1;48(5):483-489. doi: 10.2341/23-007.
Direct composite restorations are accepted as a treatment option for microdontia, which is a relatively prevalent condition that poses esthetic concerns. While free-hand composite placement is technique-sensitive and time-consuming, the resin composite injection technique is more straightforward and predictable. A fully digital workflow has been recently introduced, but the 3D-printed resin index is rigid and challenged by undercuts, as opposed to the silicone index. This case report presents a flexible 3D-printed resin index, which can accurately transfer the digitally simulated functional and esthetic form to the final restoration. In addition, a rigid stabilization holder was designed to stabilize the flexible index.
直接复合修复被认为是治疗过小牙的一种治疗选择，过小牙是一种较为常见的病症，会引起美观问题。虽然徒手复合放置技术敏感且耗时，但树脂复合材料注射技术更为直接和可预测。最近引入了全数字化工作流程，但 3D 打印树脂印模仍然存在刚性问题，而且会受到倒凹的影响，这与硅橡胶印模不同。本病例报告介绍了一种灵活的 3D 打印树脂印模，它可以准确地将数字模拟的功能和美观形态转移到最终修复体上。此外，还设计了一个刚性稳定支架来稳定柔性印模。
