A Clinical Study on Form of Chewing Path and Rhythm of Chewing Movement in Osseointegrated Implant Full Bridge

Abstract

The purpose of this study was to investigate form of chewing path and rhythm of chewing movement in patients with osseointegrated implant full bridge.
Chewing movement was recorded and analyzed with Sirognathograph Analyzing System III. Thirty patients with osseointegrated implant full bridges, ten subjects with natural teeth, and ten patients with full dentures were selected for this study.
The results were as follows:
1. Rhythm of chewing movement
Closing time, cycle time, and ratio of closing time to cycle time in patients with osseointegrated implant full bridges were longer than those in subjects with natural teeth, and shorter than those in patients with full dentures.
Stability in patients with osseointegrated implant full bridges was slightly inferior to that in subjects with natural teeth and superior to that in patients with full dentures.
2. Form of chewing path
Opening amount in patients with osseointegrated implant full bridges was nearly equal to that in subjects with natural teeth and greater than that in patients with full dentures.
Variation to working side and posterior of turning point in patients with osseointegrated implant full bridges and in patients with full dentures were smaller than those in subjects with natural teeth.
Stability in patients with osseointegrated implant full bridges was nearly equal to that in subjects with natural teeth and in patients with full dentures.