Psychological factors influencing the prognosis of temporoma
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The leading symptom of temporomandibular disorders (TMD) is pain, and psychological factors are involved in the persistence of TMD-related pain. Patients having Temporomandibular disorder along with psychological disturbances tend to develop refractory pain requiring further treatment interventions to reduce joint pain.

The study published by the Journal of Dental Sciences was aimed to analyze the influence of psychological factors on the prognosis of TMD-related pain. The leading symptom of TMD is pain, which often limits the movement of the TMJ. The etiology of TMD is multifactorial and psychological distress is one of the contributing factors which is associated with induction and persistence of pain.

The medical records of 486 patients with TMD-related pain were analyzed. Each patient's psychological profile was assessed using the Symptom Checklist-90-Revised (SCL-90-R). Patients were classified into two groups according to a post-treatment numeric rating scale (NRS). Patients with an NRS score of 0 or 1 at the last visit were classified into group G, and those with an NRS score of 2 or greater were classified into group P. Following this, all patients were re-classified into groups N and R according to pain recurrence. Statistical analysis was performed to evaluate differences in the SCL-90-R T scores between the groups. In addition, multiple logistic regression analysis was used to identify psychological factors that affected treatment outcome.

The patients in groups P and R had higher scores in all subscales of the SCL-90-R than groups G and N, respectively. In particular, somatization (SOM) and psychoticism (PSY) scores showed significant differences between the groups in the treatment outcome.

A correlation is identified between psychological factors and treatment outcome in patients with TMD-related pain. In particular, patients with elevated SOM and PSY scores are more likely to develop refractory pain and thus require additional interventions to control this risk.