Radiological follow-up results of untreated anterior disc displacement without reduction in adolescents

Abstract

Abstract: PURPOSE : To assess radiographic progression in adolescents with anterior disc displacement without reduction (ADDWoR) without treatment using serial MRI. METHODS : A retrospective review was conducted in patients under 20 years of age with unilateral ADDWoR who underwent MRI examination twice over 6 months without any intervention between January 2010 and June 2013. On MRI, bone changes ,disc deformation and effusion were evaluated. SAS 9.13 software package was used for statistical analysis. RESULTS : One hundred and twenty-two patients (101 females, 23 males) with a mean age of 16.4 years underwent MRI examination twice at least 6 months apart (mean: 13.6 months). At initial visit, there was significant difference between the involved and the non-involved side in condylar degeneration and effusion. Following no intervention, the frequency of effusion significantly decreased, the frequency of disc deformation significantly increased, and the frequency of condylar degeneration increased from 60.48% to 69.36% without significant difference. CONCLUSIONS : During the period of clinical observation, there was significant decrease in effusion and significant increase in disc deformation. Whilst there was an increase in condylar surface change, but without significant difference.

Key words: Adolescent, Temporomandibular joint, Anterior disc displacement, Degeneration, MRI

CLC Number:

R782.6

ZHUO Zi-ang, CAI Xie-yi. Radiological follow-up results of untreated anterior disc displacement without reduction in adolescents[J]. China Journal of Oral and Maxillofacial Surgery, 2016, 14(1): 24-27.

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