The opening index in patients with closed lock and with myogenous disorders of the temporomandibular joint.
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Date
2014-04-29
Authors
Karic, Vesna V.
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Abstract
Disorders of the temporomandibular joint (TMD) are the most common
chronic pain conditions in the dental population. Limitation of mandibular
movement is one of the signs of TMD.
In this study, a new opening index was examined in patients with
myogenous and closed lock TMD disorders. This opening index was
determined as a ratio between active and passive opening (Miller et al. In
press). Patients were examined for TMD using the procedure of Bezuur et al.
(1988) and Hansson (1988).
Forty two patients with a TMD of myogenous origin, 11 with a closed lock,
and 51 patients with no sign or symptoms of TMD were recruited to the
study.
ANOVA showed that the opening index of the group of patients with a TMD
of .myogenous origin differed from that of a group with closed lock
(pO.OOOl), ANCOVA showed that the opening index in ail groups was not
dependent on age (p<0.225) or gender (p< 0.569).