Effect of different occlusal forces on the accuracy of interocclusal records of loose teeth

Background This study aimed at investigating the effect of loose teeth on the accuracy of occlusal records by comparing the differences in the number of occlusal contact points, occlusal contact area and the centre of the occlusal contact region under different occlusal forces in patients with periodontitis. Objective The effects of different occlusal forces on the occlusal contact point (OCP), occlusal contact area (OCA) and the centre of occlusal contact region (OCC) of loose teeth. Methods Occlusal training was performed on the 30 patients who completed periodontal serial treatment. One doctor took the occlusal records with silicone rubber and the T‐scan system; the patients were digitally scanned intraorally by a technician. The data of the healthy teeth were recorded as the control group, and the data of the loose teeth were recorded as the experimental group. Then, we used Image J to measure the numbers of OCP and OCA and Auto CAD to calculate the coordinates of OCC. A paired t test was used to analyse whether the differences in OCP, OCA and OCC were statistically significant when the occlusal forces were different. Results The OCA of all three experimental methods increased under heavy occlusal force (p