Degenerative Changes in the Temporomandibular Joint in two Australian Aboriginal Populations

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Abstract
The frequency and severity of degenerative changes in the temporomandibular joints in two Australian Aboriginal populations with different patterns of tooth wear, craniofacial morphology, and temporomandibular joint morphology were examined. The incidence of degenerative changes differed between groups and between sexes and increased with age, ranging from zero in the youngest groups to 65% in the oldest, most severely affected group. Degenerative changes of the fossa were more frequent than condylar changes. Significant associations between degenerative changes and both the pattern of tooth wear and aspects of facial morphology were also evident.