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Description

Mandibular condyle being part of the TMJ complex, its volume and shape play a pivotal role in treatment stability and outcomes in orthodontic and orthognathic patients over long term periods. Different loading patterns would result in different morphology of the TMJ. The association with different facial types and understanding the relationship between condylar position, morphology and jaw base divergence is limited. This study’s objective is to assess the condylar structure which includes condylar height, width and height of the fossa in different jaw base divergences.

A cross-sectional study was conducted in which 90 patients undergoing Orthodontic treatment were selected and allocated into 3 groups of 30 each namely Hypodivergent, Normodivergent and Hyperdivergent based on Frankfort mandibular plane angle. Patients satisfying the inclusion criteria were subjected to the lateral cephalogram and CBCT under standard resolution and FOV of 8 x 8 cm2 with the teeth in maximum intercuspation. On the obtained DICOM image ten anatomical landmarks were marked and analyzed using the Carestream imaging software. The results were then statistically analyzed using ANOVA.

Hypodivergent individuals have condyles which are larger in size and larger condylar axis angles. Whereas, hyperdivergent individuals have more superiorly positioned condyles. This relationship has to be considered while planning orthodontic treatment.

Disciplines

Health and Medical Administration | Health and Physical Education | Health Services Research | Medical Education | Medical Sciences | Medicine and Health Sciences

Document Type

Event

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Assessment of condylar morphology in various facial types-cbct study

Mandibular condyle being part of the TMJ complex, its volume and shape play a pivotal role in treatment stability and outcomes in orthodontic and orthognathic patients over long term periods. Different loading patterns would result in different morphology of the TMJ. The association with different facial types and understanding the relationship between condylar position, morphology and jaw base divergence is limited. This study’s objective is to assess the condylar structure which includes condylar height, width and height of the fossa in different jaw base divergences.

A cross-sectional study was conducted in which 90 patients undergoing Orthodontic treatment were selected and allocated into 3 groups of 30 each namely Hypodivergent, Normodivergent and Hyperdivergent based on Frankfort mandibular plane angle. Patients satisfying the inclusion criteria were subjected to the lateral cephalogram and CBCT under standard resolution and FOV of 8 x 8 cm2 with the teeth in maximum intercuspation. On the obtained DICOM image ten anatomical landmarks were marked and analyzed using the Carestream imaging software. The results were then statistically analyzed using ANOVA.

Hypodivergent individuals have condyles which are larger in size and larger condylar axis angles. Whereas, hyperdivergent individuals have more superiorly positioned condyles. This relationship has to be considered while planning orthodontic treatment.