Fifteen dental college students of Chosun University without the abnormal occlusion, the history and symptom of temporomandibular dysfunction(TMD), and who had all Permanent teeth except third molar and the fifteen moderate group and the fifteen severe group classified according to Helkimo´s dysfunction index among patients on the basis of the =Ymptom of TMD were selected. The occlusal contact, occlusal force and occlusal interference in eccentric movement was studied and analyzed using T-Scan system.
The result were as follows:
1.The TLR centering around midsagittal axis was located at 1.42±0.82 mm in control group 3.36±1.45mm in severe group, and as TMD was heavier, occlusal contact was located the farther point from midsagittal is.
2.The PLR from the first cont ict to the fifth contact centering around midsagittal aa8 I located at 1.73±1.78 mm in control group, 3.36±1.41 mm in moderate group, and 5.39± 4.32 mm in severe group, and as TMD was heavier, occlusal contact was located at the farther point from midsgittal axis.
3.The TFB, PFB, RFB and LFB of occlusal contact centering around incisal axis had significant difference statistically among control group, moderate group, and severe group and it was located at first molar.
4.The LF and RF was smaller in TMD group than in control group.
5.The LR moment of occlusal force centering around midsagittal axis was located at 178.51±139.81 N.mm in control group, 466.25±296.47 N.mm in moderate group, and 749.18±588.18 N.mm in severe group. And as TMD was heavier, it was located at the farther pc from midsagittal axis.
6.The RL and LL of occlusal force centering around incisal axis had not-significanol statistically among control group, moderate group, and severe group, and it was at the fits molar.
7.The number of occlusal interference of the eccentric movement was increased in Ow patients of TMD.
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