3036 The study of the relationship of condyle form and TMD symptoms in incomplete dentition patients
H.T. CAO, M.Q. WANG, T. SHIBATA, and Y. ZHANG, Stomatological College, Fourth Military Medical University, Xi'an, China

TMJ condyle has great variation in form that may influence on its radiological diagnosis. Tomogram is used to exam clinically TMJ condition on which the condyle form is often in help of diagnosing temporomandibular disorders (TMD). So it is reasonable to investigate the relationship of condyle form on tomogram with TMD symptoms. Materials and Methods: 1. 88 patients (42 male, 46 female) consulted for repairing their incomplete dentition and were divided into two groups: those with TMD signs (14 male, 25 female) were classed in Group A, and those without TMD signs (26 male, 23 female) classed in Group B. 2. 25 incomplete dentition patients consulted for the treatment of TMD (Group TMD, 6 male, 19 female). TMJ sounds, oral facial pain and mouth open length were examined clinically. Occlusal casts and bilateral TMJ tomograms were taken for all 113 patients and were analyzed according blinding principle. Results: 1. No difference was found among Group TMD, Group A and Group B for the sex and age. 2. The number of missing pairs of tooth (1 tooth missing record as 1, and 1 tooth together with its opposite tooth missing record 1 as well) was less and open length was short in Group TMD (p<0.05). 3. Both the condyle symmetry and osteal abnormals did not show difference among the three groups but their degrees (scored as ++, +, -) were both found refer to the number of missing tooth-pair. Conclusions: condyle symmetry and osteal changes shown on tomogram has less relation to TMD than to occlusion. Supported by Foundation for University Key Teacher by the ministry of Education of China.

Seq #275 - TMJ - Structure and Function II
3:45 PM-5:00 PM, Friday, 8 March 2002 San Diego Convention Center Exhibit Hall C

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