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TMJ internal derangement and adolescent craniofacial morphology: a pilot study
B Nebbe1, P W Major, N G Prasad
1Faculty of Medicine and Oral Health Sciences, University of Alberta, Edmonton, Canada. bnebbe@gpu.srv.ualberta.ca
The Angle Orthodontist
|January 1, 1997
Summary
Temporomandibular disc displacement in adolescents may be linked to changes in craniofacial morphology. This study found associations between disc position and specific cephalometric measurements, impacting facial growth.
Area of Science:
- Orthodontics
- Craniofacial Biology
- Radiology
Background:
- Mandibular condylar cartilage growth is influenced by intrinsic and extrinsic factors.
- Temporomandibular disc displacement can alter cartilage growth and lead to facial changes.
Purpose of the Study:
- To investigate the association between temporomandibular disc displacement and craniofacial morphology in adolescents.
- To determine if altered craniofacial morphology can be identified in conjunction with disc displacement.
Main Methods:
- Magnetic resonance imaging (MRI) was used to assess disc position in 25 preorthodontic adolescents (ages 10-17).
- Lateral cephalometric radiography was performed with teeth in centric occlusion.
- Multiple regression analysis compared cephalometric variables to an age- and sex-matched population.
Main Results:
- Significant associations were found between disc displacement and specific cephalometric variables (R-square values of .91 for left TMJ, .82 for right TMJ).
- Variability in radiographic tracings was minimal for most measurements.
- The study identified links between disc displacement and altered craniofacial measurements.
Conclusions:
- Temporomandibular disc displacement in adolescents may correlate with altered craniofacial morphology.
- These findings suggest a potential relationship between internal joint derangement and facial development patterns.