Int J Stomatol

Inter J Stomatol ›› 2014, Vol. 41 ›› Issue (1): 52-56.doi: 10.7518/gjkq.2014.01.013

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Using cone-beam computed tomography in quantitative studies on the structure of the temporomandibular joint

Yao Jun, Liu Conghua.   

  1. Dept. of Orthodontics, Guangdong Provincial Stomatological Hospital, Stomatological Hospital of Southern Medical University, Guangzhou 510280, China
  • Received:2013-06-18 Revised:2013-08-05 Online:2014-01-01 Published:2014-01-01

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Abstract:

The temporomandibular joint(TMJ) is a complex articular system that is located deep between the mandible and the temporal bone. Cone-beam computed tomography(CBCT) provides abundant information on TMJ morphology. On three-dimensional images and two-dimensional slice images, changes in head position changes the position of anatomical landmarks on the same plane, but it can still be generally identified by astute clinicians. On coronal, sagittal, and transverse sections, CBCT displays the structure of TMJ to acquire joint spaces in all directions. The horizontal angle, height, radius, volume, and surface area of the condyle can also be measured to establish TMJ morphology, as well as articular eminence morphology(height, inclination, and thickness of fossa). Moreover, minimum distortion of osseous tissue is useful for analyzing bone change. Therefore, CBCT improves the diagnostic ability of temporomandibular disorders and effectively guide clinical treatment.

Key words: cone beam computed tomography, temporomandibular joint, joint space, condyle, mandibular fossa, articular eminence


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