Incidence and risk factors of temporomandibular joint disorders in patients with bimaxillary protrusion after orthodontic treatment

doi:10.19439/j.sjos.2021.04.020

Abstract

Abstract: PURPOSE: To observe the occurrence of temporomandibular joint disorder (TMD) in patients with bimaxillary protrusion after orthodontic treatment, and to explore the possible factors causing this phenomenon, so as to guide rational prevention of TMD in clinic. METHODS: The clinical data of 80 patients with bimaxillary protrusion who received orthodontic treatment in Hebei Provincial People's Hospital from March 2019 to October 2020 were retrospectively analyzed. The patients with TMD after orthodontic treatment were included in the experimental group and the remaining patients were included in control group. The baseline data questionnaire was designed for bimaxillary protrusion patients after orthodontic treatment. The risk factors of TMD were included in the study. Through a series of univariate and multivariate analysis, the influencing factors of TMD in patients with bimaxillary protrusion after orthodontic treatment were determined. SPSS 23.0 software package was used to analyze the data. RESULTS: Among 80 patients with bimaxillary protrusion after orthodontic treatment, 15(18.75%) were included in the experimental group, while 65(81.25%) did not have TMD, and were included in the control group. After a preliminary analysis of the baseline data, the variables with significant difference were included in the independent variables for univariate analysis. After adjusting for the influence of other baseline data, the results showed that younger age, girl, high stress perception scale score, bad oral habits, dental caries, history of maxillofacial trauma, bad eating habits, and root canal treatment history were the causes of bimaxillary protrusion. CONCLUSIONS: The risk factors of TMD of patients with bimaxillary protrusion after orthodontic treatment may be closely related to girl, younger age, high stress perception score, bad eating habits, previous caries, root canal treatment history and maxillofacial trauma. Therefore, it is necessary to strengthen the standardization of orthodontic treatment, publicize oral health awareness, establish good eating habits. Patients who had a history of root canal therapy, maxillofacial trauma and dental caries should be vigilant, which may be of positive significance in reducing the incidence of TMD.

Key words: Bimaxillary protrusion, Orthodontic treatment, Temporomandibular disorders, Risk factors

CLC Number:

R782.2

CHENG Jie, ZHANG Dong, XIE Li-li, WANG Pu, LI Juan, HAO Wei. Incidence and risk factors of temporomandibular joint disorders in patients with bimaxillary protrusion after orthodontic treatment[J]. Shanghai Journal of Stomatology, 2021, 30(4): 439-443.

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