[Three-dimensional model analysis of obstructive sleep apnea hyponea syndrome patients with long-term treatment of oral appliances].

Purpose: The aim of the study was to investigate the dental changes of patients with obstructive sleep apnea hypopnea syndrome (OSAHS) with long-term treatment of oral appliances, via the method of three-dimensional model analysis.

Methods: Using Geomagic Studio 2014 software, we transferred the dental models, which were from 18 OSAHS patients before and after treatment of oral appliances, into three-dimensional models for digital analysis. Datasets obtained from pre- and after treatment were compared for accuracy via paired t test using SPSS 22.