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Variation in condylar morphology in different malocclusion among Indians.
Swapna Sreenivasagan1, Ashwin Mathew George1, Sri Rengalakshmi1
1Saveetha Dental College and Hospitals, Saveetha institute of medical and technical sciences (SIMATS), Saveetha University, Chennai-77 India.
Bioinformation
|March 16, 2022
Summary
Condyle shape in temporo-mandibular joint (TMJ) radiographs can predict malocclusion. Oval and bird beak shapes were most common in skeletal classes, aiding in occlusion assessment.
Area of Science:
- Orthodontics and Dental Radiology
- Temporomandibular Joint (TMJ) Morphology
- Skeletal Malocclusion Analysis
Background:
- The temporomandibular joint (TMJ) and mandibular condyle are key anatomical structures visible in skull and jaw radiographs.
- Understanding condyle morphology is crucial for diagnosing and potentially predicting different types of skeletal malocclusion.
Purpose of the Study:
- To evaluate the predictability of four distinct mandibular condyle shapes (oval, bird beak, diamond, crooked) in relation to skeletal malocclusion classes I, II, and III.
- To analyze the prevalence of these condyle shapes in different malocclusion types using orthopantomograms (OPGs).
Main Methods:
- Radiographic evaluation of 987 orthopantomograms (OPGs).
- Visualization and classification of the morphology of 1974 mandibular condylar heads into four defined shape types.
- Correlation of observed condyle shapes with skeletal malocclusion classifications (Class I, II, III).
Main Results:
- The oval condyle shape was found to be the most prevalent.
- The bird beak shape was the second most common condyle morphology observed.
- Diamond and crooked condyle shapes exhibited greater variability and were less common compared to oval and bird beak types.
Conclusions:
- Mandibular condyle shapes demonstrate a useful predictive capacity for determining the nature of a patient's occlusion.
- The prevalence of specific condyle morphologies can serve as an indicator for skeletal malocclusion types.
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