Tempo e precisão dos diferentes tipos de registros interoclusais na obtenção da espessura das placas oclusais estabilizadoras pelo fluxo de trabalho digital: estudo in vivo

Abstract

Objective: To evaluate the time taken to make different types of interocclusal registrations and their precision in obtaining the planned thickness for the stabilizing splint made using the digital workflow. Methodology: It consists of an in vivo study with 30 patients diagnosed with probable sleep bruxism. Individually, the patients had their bite registered with three different types of occlusal registrations: maximum habitual intercuspation (MIH), anterior registration device (DAR) and occlusal reeds. The time required to obtain each record was recorded (in minutes and seconds) and analyzed later. The interocclusal distance corresponding to the planned thickness of the plates was determined to be 2 mm. For DAR and occlusal pick, this distance was created with the help of 2 mm thick posterior occlusal picks. For registration in MIH, it was created by enlarging the incisal pin in the virtual articulator. It was then analyzed using the digital models obtained for each record. Statistically, the and thickness data were evaluated using the ANOVA test and Tukey's post test using the Statistical Package for Social Sciences 22.0 software. Thickness data were analyzed as mean and standard deviation. Results: There was a statistical difference in the time of interocclusal registration, where MIH (47,94sec) and reed (01:03,01min) were performed in a shorter time when compared to the DAR (03:09,26min) (<0.001). Regarding thickness, there was a statistical difference between groups incisal pin (1,85±0,33) and reed records (2,08±0,28), which presented, respectively, the smallest and largest distance between the arches. The average registration with the DAR (2,03±0,45) (0,048) was the closest to the 2mm predicted for the thickness of the plate, followed by the technique with occlusal picks. Conclusion: Within the limitations of the study, it can be concluded that recording using the occlusal palette or in MIH presented a shorter clinical time when compared to the DAR technique. Despite the thickness averages being close, the DAR technique was the method that came closest to the estimated thickness for the occlusal splints.