China Journal of Oral and Maxillofacial Surgery ›› 2022, Vol. 20 ›› Issue (5): 437-442.doi: 10.19438/j.cjoms.2022.05.004

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Characteristics of adolescent patients with temporomandibular joint anterior disc displacement

ZHANG Da-he, SHEN Pei, YANG Chi   

  1. Department of Oral Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology. Shanghai 200011, China
  • Received:2022-04-02 Revised:2022-05-17 Online:2022-09-20 Published:2022-09-20

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Abstract: PURPOSE: To Summarize the characteristics of patients with temporomandibular joint (TMJ) anterior disc displacement (ADD) in our department. METHODS: Consecutive patients first diagnosed with TMJ ADD in the TMJ Clinic at Department of Oral Surgery in Shanghai Ninth People's Hospital from April 2015 to November 2018 were included in this study. Demographic information, first visit department, chief complaints, history of present illness, past history, clinical characteristics and diagnosis of the patients were collected. The data was analyzed by SPSS 21.0 software package. RESULTS: A total of 743 ADD patients were enrolled during the observation period, and the male to female ratio was 1:5.52. Among them, patients ≤20 years old accounted for the highest proportion (58.0%), and the peak age of the visited population was 15-16 years old. Compared with adult patients, adolescent patients ≤ 20 years old had a higher proportion of patients who first visited orthodontic (or orthognathic) department due to the chief complaint of dentofacial deformity (P<0.001), a higher proportion of patients with bruxism(P<0.001), and lower proportions of patients with preauricular pain, mandibular deviation or who were diagnosed as idiopathic condylar resorption (all P<0.01). In the adolescent patients ≤ 20 years, patients who first visited orthodontic (or orthognathic) department due to the chief complaint of dentofacial deformity had lower proportions of patients with preauricular pain or restricted mouth opening (P<0.01), and a higher proportion of patients with mandibular retraction(P<0.001). CONCLUSIONS: Adolescents with TMJ ADD have much higher demand for treatment than other age groups. A considerable number of them present the main complaint of dentofacial deformities and have milder symptoms, but they do not understand the relationship between TMJ diseases and dentofacial deformities, which might delay the best treatment opportunity.

Key words: Temporomandibular joint, Anterior disc displacement, Dentofacial deformity, Idiopathic condylar resorption

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