Internal derangement in the temporomandibular joint of juveniles with clinical signs of TMD

The aim of this study was to investigate possible correlation of specific skeletal or dental class in children and adolescents with clinical signs of temporomandibular dysfunction (TMD) with the severity of internal derangement (ID) of the temporomandibular joint.Based on MRI images, the ID of 232 juvenile temporomandibular joints in 116 patients were retrospectively recorded. The distribution of the ID stages within the skeletal and dental classes was compared by means of the χExcluding the comparison between skeletal Class I (S I) and skeletal Class II (S II; p 0.05), no statistically significant differences in the distribution of the ID stages were found between the skeletal classes (p 0.05). No statistically significant differences were found when comparing the distribution of the ID stages between the dental classes (p 0.05).According to these findings, there is no skeletal or dental class that is related to higher degrees of internal derangement in the TMJs of children and adolescents presenting clinical signs of TMD. Therefore, it is not possible to draw conclusions about the severity of the ID in relation to the dental and skeletal class in symptomatic juvenile TMJs.