Yang's Classification of Juvenile TMJ Anterior Disc Displacement Contributing to Treatment protocols

This study aims to establish a new staging system of temporomandibular joint (TMJ) anterior disc displacement (ADD) and evaluate its role in guiding the treatment plan. A consecutive sample of 522 juvenile patients (780 joints) diagnosed as ADD based on magnetic resonance imaging (MRI) was included...

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Bibliographic Details
Published in:Scientific reports 2019-04, Vol.9 (1), p.5644-5644, Article 5644
Main Authors: Shen, Pei, Xie, Qianyang, Ma, Zhigui, Abdelrehem, Ahmed, Zhang, Shanyong, Yang, Chi
Format: Article
Language:English
Subjects:
Adolescent
Cartilage Diseases
Child
Classification
Female
Humans
Joint Dislocations - classification
Joint Dislocations - pathology
Kaplan-Meier Estimate
Magnetic resonance imaging
Magnetic Resonance Imaging - methods
Male
Medical prognosis
NMR
Nuclear magnetic resonance
Prognosis
Risk assessment
Survival analysis
Temporomandibular joint
Temporomandibular Joint - pathology
Temporomandibular Joint Disorders - classification
Temporomandibular Joint Disorders - pathology
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Summary:This study aims to establish a new staging system of temporomandibular joint (TMJ) anterior disc displacement (ADD) and evaluate its role in guiding the treatment plan. A consecutive sample of 522 juvenile patients (780 joints) diagnosed as ADD based on magnetic resonance imaging (MRI) was included and analyzed. 674 joints received TMJ treatments according to our staging system, while 106 joints rejected any treatment; only for follow-up. The outcomes were judged according to our success criteria. The prognosis of our staging system was also evaluated in comparison to Wilkes classification. Kaplan-Meier survival analysis showed that significant stratifications of the ameliorative rate were found at all subgroups within any two stages in our staging system, except for subgroups between stages 0 and 1, stages 2 and 3, and stages 3 and 4. After analyzing the interactions between different candidate prognostic factors in a Cox model, the relative risks of deterioration of ADD included treatment methods (HR = 42.94, P 
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-42081-5