Association between hypoplastic condyles and temporomandibular joint disc displacements: a cone beam computed tomography and magnetic resonance imaging metrical analysis

This study investigated the association between hypoplastic condyles and disc displacements without reduction (DDw/oR). Consecutive patients with non-syndromic unilateral condylar hypoplasia were recruited and clinical, cone beam computed tomography (CBCT) and magnetic resonance imaging (MRI) data w...

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Bibliographic Details
Published in:International journal of oral and maxillofacial surgery 2020-07, Vol.49 (7), p.932-939
Main Authors: Liu, Y.-S., Yap, A.U.-J., Lei, J., Liu, M.-Q., Fu, K.-Y.
Format: Article
Language:English
Subjects:
condylar hypoplasia
condylar remodelling
degenerative joint diseases
Dentistry
disc displacement without reduction
osteoarthritis
temporomandibular disorders
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Summary:This study investigated the association between hypoplastic condyles and disc displacements without reduction (DDw/oR). Consecutive patients with non-syndromic unilateral condylar hypoplasia were recruited and clinical, cone beam computed tomography (CBCT) and magnetic resonance imaging (MRI) data were acquired. Linear measurements including condylar head width, depth, height and condyle length were determined with CBCT while MRI was used to assess disc position, morphology and displacement. A total of 43 patients were enrolled of which 93.02% had a history of temporomandibular disorders (TMDs) and 83.72% presented with TMD signs and symptoms. Depth and height of the condylar head along with condyle length of hypoplastic joints (6.68±1.67mm, 4.97±1.25mm and 14.49±3.02mm, respectively) were significantly lesser than normal joints (7.77±1.26mm, 6.35±1.45mm and 18.20±3.18mm) (P
ISSN:0901-5027
1399-0020
DOI:10.1016/j.ijom.2019.09.004