2021 Volume 59 Issue 1 Pages 34-40
In recent years, there have been reports that the incidence of juvenile temporomandibular disorders is on the rise. However, few studies have involved taking quantitative measurements over time. In this study, we conducted magnetic resonance imaging (MRI) on an 11-year-old girl with a chief complaint of crepitus in the left temporomandibular joint region and trismus due to left masseter pain, at her initial consultation, then again at 6, 12, and 36 months. We conducted follow-ups over time, and took quantitative measurements of the mandibular condyle anterior functional surface area and mandibular fossa area. While there was no bone deformation in the right mandibular condyle and the mandibular condyle anterior functional surface area had increased over time, bone deformation was found in the left mandibular condyle, with no increase in the mandibular condyle anterior functional surface area. Jaw exercises and correction of her tooth contact habits (TCH) resulted in a good outcome, so we report here on this case.