Korean J Oral Maxillofac Radiol.
2008 Mar;38(1):23-27.
Positional change of the condylar heads after wearing complete denture on dental cone beam CT
- Affiliations
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- 1Department of Dental Science Graduate School & Oral Biology Research, Chosun University, Korea. jhajung@chosun.ac.kr
Abstract
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PURPOSE: The aim of this study was to evaluate the change in the position of the mandibular condyle within articular fossa by a CBCT after wearing complete denture (CD).
MATERIALS AND METHODS
CBCT of 34 temporomandibular joints were taken from 9 male and 8 female patients with CB Mercuray(TM) (Hitachi, Japan) before and after wearing a CD for rehabilitation. Position of mandibular condyle within articular fossa at centric occlusion was evaluated with Vimplant2.0(TM) (CyberMed, Korea) on the central parasagittal view and curved panoramic coronal view of the condylar head. A statistical evaluation was done with SPSS.
RESULTS
The range of anteroposterior positional rate (AP) of condylar head within articular fossa was -16-5 and -10-12 respectively on the right and left sides. Before wearing CD, the AP rate showed discrepancy between right and left sides (p<0.05). After wearing CD, both condyles showed a tendency to decrease in posterior condylar position (right side; p<0.05). The average discrepancy between right and left side in mediolateral positional rate (MD) was 15.5 and 4.5 respectively before and after wearing CD. The improvement was observed in mediolateral relationship of both condylar heads after wearing CD (p<0.01). Before wearing CD, the average horizontal angle of long axis of condylar head was 79.6+/-2.7degrees and 80.1+/-5.7degrees respectively on the right and left sides. After wearing CD, both condyles were rotated in the same direction in average on axial plane.
CONCLUSION
We observed with CBCT the significant clinical evidence in case of positional change of mandibular condyle after wearing complete denture.