Fig. 4

Pressure distribution on the condyle from the posterior and anterior view. A In mandibular postural position, the condyles experienced compression in the superior and posterior aspects. B In mandibular advancement with AMS, the compression in the superior and posterior aspects was released. C In mandibular advancement without AMS, the stress distribution was similar to that with AMS. D In mandibular postural position, the condyles experienced compression in the anterior aspect, concentrated on one side of the mediolateral direction. E In mandibular advancement with AMS, the compression region moved forward. The stress concentration area in the left condyle disappeared and the pressure was distributed evenly in the mediolateral direction. F In mandibular advancement without AMS, the stress distribution was similar to that with AMS