Department of Dentistry, Federal University of Rio Grande do Norte (UFRN), AV. Senador Salgado Filho, 1787, Lagoa Nova, Natal, Rio Grande do Norte, 59056-000, Brazil.
Department of Dentistry, State University of Rio Grande do Norte (UERN), Natal, RN, Brazil.
Clin Oral Investig. 2024 Apr 17;28(5):255. doi: 10.1007/s00784-024-05639-w.
To evaluate the trueness of the digital maxillary occlusal records in comparison with the conventional records for the fabrication of complete-arch implant-supported fixed prostheses.
This randomized controlled clinical trial followed the recommendations of the CONSORT statement. Twenty participants who used a mandibular interim complete-arch fixed prosthesis and conventional complete maxillary dentures were included in the study. The participants were randomized into two types of maxillary occlusal records: conventional (COR) and digital (DOR) (TRIOS; Shape A/S). After fabricating the prostheses, the distribution and number of occlusal contact points, and the time taken to obtain the maxillary occlusal record and work model were evaluated. Descriptive analysis was used to evaluate the distribution of occlusal contact points. The Wilcoxon test was employed for assessing the number of occlusal contact points, while the Mann-Whitney U test was used for the time taken to obtain the working casts and the maxillary occlusal record and occlusal adjustment times (p < 0.05).
There was a similarity in the jaw relation recording methods regarding the distribution of occlusal contact points. There was no difference in the number of occlusal contact points between the anterior (p = 0.439) and posterior (p = 0.227) teeth. No relationship was observed between the distribution and number of occlusal contact points (COR, p = 0.288; DOR, p = 0.183). DOR required less occlusal and clinical adjustment time, on the other hand more laboratory and total workflow time than COR (p < 0.001).
The DOR may be an option for obtaining the functional space necessary for the assembly of teeth in complete-arch implant-supported fixed prostheses; however, it requires more working time.
The digital occlusal recording method can be used to assess the interocclusal space for the virtual tooth setup of a complete-arch implant-supported fixed prosthesis.
评估数字化上颌咬合记录与传统记录在制作全颌种植支持固定修复体方面的准确性。
这是一项随机对照临床试验，遵循 CONSORT 声明的建议。共纳入 20 名使用下颌临时全颌固定义齿和传统全上颌总义齿的患者。将患者随机分为两种上颌咬合记录方式：传统（COR）和数字化（DOR）（TRIOS；Shape A/S）。制作修复体后，评估咬合接触点的分布和数量，以及获得上颌咬合记录和工作模型的时间。采用描述性分析评估咬合接触点的分布。采用 Wilcoxon 检验评估咬合接触点的数量，采用 Mann-Whitney U 检验评估获得工作模型和上颌咬合记录以及咬合调整时间（p<0.05）。
在咬合关系记录方法方面，两种方法在咬合接触点的分布上具有相似性。在前牙（p=0.439）和后牙（p=0.227）区域，两种方法的咬合接触点数量无差异。咬合接触点的分布和数量之间无相关性（COR，p=0.288；DOR，p=0.183）。DOR 所需的咬合调整和临床调整时间较少，但实验室和总工作流程时间较多（p<0.001）。
DOR 可能是获取全颌种植支持固定修复体中牙齿组装所需功能空间的一种选择，但需要更多的工作时间。
数字化咬合记录方法可用于评估全颌种植支持固定修复体的虚拟牙位设置的咬合空间。
