Background: Temporomandibular disorders are relatively common disturbances in the world and Vietnam. The Diagnostic Criteria for Temporomandibular Disorders suggested by Schiffman in 2014 is a frequently used diagnostic system to classify temporomandibular disorders into subtypes, toward therapeutics purposes.

Objectives: (1) To investigate clinical features of temporomandibular disorders in adult patients. (2) To classify temporomandibular disorders using the Diagnostic Criteria for Temporomandibular Disorders of Schiffman.

Materials and method: Cross-sectional study in 50 adult patients with temporomandibular disorders who visited Dental Clinic, Hue University of Medicine and Pharmacy Hospital from May 2020 to May 2021. Patients were clinically examined by a calibrated doctor, using Symptoms Questionnaires and Examination Form which are the main tools of The Diagnostic Criteria for Temporomandibular Disorder.

Results: The popular age group was 18-44 years old (94%). The female/male ratio was 2.8/1. Patients mostly came to the hospital due to pain (70%). Myalgia accounts for the highest proportion (70%) of all subtypes. The most common intra-articular joint disorder subtype was disc displacement with reduction (68%).

Conclusions: Temporomandibular disorders were common in young, women adults; the chief complaint of patients was pain. Myalgia and disc displacement with reduction were two frequent TMD subtypes.