Int J Prosthodont. 2023 Sep 12;36(4):501-507. doi: 10.11607/ijp.7947.
To compare the accuracy of occlusal stabilization appliances fabricated by digital workflows to those fabricated by conventional workflows.
In total, 10 volunteers were recruited in this single-blinded crossover study. All volunteers received two types of occlusal stabilization appliances: a digital additively manufactured stabilization splint (DS) and a conventionally fabricated splint (CS). The accuracy was assessed using a 4-point rating scale addressing two aspects of the occlusal appliances: occlusal contact and basic performance. In addition, silicone impression materials were used to assess the gap between the appliance and the maxillary arch to ensure an accurate fit. Differences were quantitatively assessed with Mann-Whitney U test and independent-sample t test.
The occlusal contact rating of DS (15.90 ± 1.73) was significantly higher than that of CS (14.10 ± 1.10, P < .05). The basic performance rating of DS (8.70 ± 0.48) was also significantly higher than that of CS (7.20 ± 0.92. P < .05). Quantitative evaluation of fit accuracy revealed a statistically significant difference (P < .05), with DS (636.29 ± 268.51 μm) being superior to CS (704.2 ± 306.05 μm).
The stabilization splints fabricated with a digital workflow showed better accuracy than the conventionally fabricated splints in terms of occlusal contact, basic performance, and fit accuracy. Because this is a pilot study, formal trials with a completely digital fabrication workflow will be conducted in the future.
比较数字工作流程和传统工作流程制作的咬合稳定矫治器的准确性。
本单盲交叉研究共招募了 10 名志愿者。所有志愿者均接受两种类型的咬合稳定矫治器：数字化增材制造稳定夹板（DS）和传统夹板（CS）。采用 4 分制评分标准评估咬合矫治器的两个方面的准确性：咬合接触和基本性能。此外，还使用硅橡胶印模材料评估矫治器与上颌弓之间的间隙，以确保精确贴合。使用 Mann-Whitney U 检验和独立样本 t 检验对差异进行定量评估。
DS 的咬合接触评分（15.90 ± 1.73）明显高于 CS（14.10 ± 1.10，P <.05）。DS 的基本性能评分（8.70 ± 0.48）也明显高于 CS（7.20 ± 0.92，P <.05）。拟合精度的定量评估显示存在统计学差异（P <.05），DS（636.29 ± 268.51 μm）优于 CS（704.2 ± 306.05 μm）。
数字化工作流程制作的稳定夹板在咬合接触、基本性能和贴合精度方面均优于传统制作的夹板。由于这是一项初步研究，未来将进行完全数字化制作工作流程的正式试验。
