[The relationship between orthodontic treatment and temporomandibular disorders].
OBJECTIVE
To explore the relationship between orthodontic treatment and temporomandibular joint disorder(TMD).


METHODS
The questionnaire and clinical examination were administered in 173 cases who underwent orthodontic treatment (orthodontic group),95 cases with morphologic malocclusion(malocclusion group) and 32 cases with normal occlusion (normal group) to collect symptoms and signs of TMD, the data were analyzed in the databases designed according to the modified Helkimo indices. SPSS10.0 software package was used for Wilcoxon test.


RESULTS
There were statistically significant differences between the orthodontic group and malocclusion group in the distribution of anamnestic, clinical dysfunction and occlusion indices(P<0.001). There were statistically significant differences between the orthodontic group and normal group with regard to the distribution of anamnestic, clinical dysfunction indices(P<0.001). No statistically significant differences were found between the orthodontic group and normal group in terms of occlusion indices(P>0.05).


CONCLUSIONS
The results suggest that patients undergoing orthodontic treatment have more symptoms and signs of TMD in the time ranged.
Department of Stomatology, 118 Hospital of PLA.Wenzhou 325000, Zhejiang Province, China. wangsheng118@sina.com
Sheng
S
Wang
Jin
J
Xiao
Guang-yao
GY
Wang
Zhi-yuan
ZY
Gu
Hong-xin
HX
Zhao
D016022:Case-Control Studies; D003766:Dental Occlusion; D006801:Humans; D008310:Malocclusion; D009971:Orthodontics, Corrective; D011795:Surveys and Questionnaires; D013705:Temporomandibular Joint Disorders