Psychometric profiles and related pain characteristics of temporomandibular disorder patients

The psychological characteristics of patients with temporomandibular disorders have received much attention in the literature. A muitivariate dustering technique has been used in the study of psychologicai characteristics of other chronic pain co7iditions, and this has recently been applied to "temporo/nandibular joint pain" patients to develop homogeneous psychometric subgroups. The primary objective of this study was to determine if these subgroups could be replicated in a separate sample. A group of 109 consecutive patients, presenting with complaints of jaw pain, were administered a Symptom Checkiist-90 Revised and a questionnaire regarding characteristics of the pain complaint. A muitivariate dustering technique was used to identify three discrete psychometric subgroups, as in previous studies. Although similar, these subgroups were not identical to those of previous studies. The s?naii number of subjects in the psychometricaliy abnormal subgroup was of special interest.