文档介绍：Journal of Orthodontics, Vol. 30, 2003, 129–137
SCIENTIFIC Temporomandibular disorders,
SECTION
occlusion and orthodontic treatment
T. Henrikson and M. Nilner
Malmö University, Sweden
Abstract Objectives: To prospectively and longitudinally study symptoms and signs of temporo-
mandibular disorders (TMD) and occlusal changes in girls with Class II lusion receiving
orthodontic fixed appliance treatment parison with untreated Class II lusions and
with normal occlusion subjects.
Design: Prospective observational cohort.
Subjects: Sixty-five girls with Class II lusion who received orthodontic treatment, 58
girls with no treatment, and 60 girls with normal occlusion.
Method: The girls were examined for symptoms and signs of TMD and re-examined 2 years
later. Additional records were taken in the orthodontic group during active treatment and 1 year
after treatment
Results: All three groups included subjects with more or less pronounced TMD, which showed
individual fluctuation during the ongoing study. In the orthodontic group, the prevalence of
muscular signs of TMD was significantly mon post-treatment. Temporomandibular
joint clicking increased in all three groups over the 2 years, but was mon in the normal
group. The normal group also had a lower overall prevalence of TMD than the orthodontic and
the Class II group at both registrations. Functional