Study Of Condyle Movement In Angleâ…¢ Malocclusion With Temporomandibular Dyfunctions(TMD)

Objective: To analyze condyle movement in Angleâ…¢malocclusion with TMD and toknow the differentia of the range and style and to offer the guidelines for clinicaldiagnosis and plan of treatment.Methods: We recorded condyle movement of 30 Angleâ…¢malocclusion with TMDselected as a trial group,30 Angleâ…¢malocclusion and 30 Normal occlusion selectedas two control groups. during mandible open and close, protrusion and reptrusion,medio-free movement with the Computer Aided Axiography (CADIAâ…«), then to studythe qualitative and quatitative characters among Angleâ…¢malocclusion with TMD and toanalyze the style and range of the condyle movement and to Compare with 30 normalocclusion and 30 Angleâ…¢malocclusionResults:1 Angleâ…¢malocclusion with TMD:1) both mandibular open and close in verticaland maximum space displacement about the right sides and mandibular medio-free inleft-and-right, the condyle pathways of the male are bigger than that of the female therehave greatly significant differences, the ranges of condyle movement of both sexes andsides in another directions, there are no sigificant differences.2)Compared with thecondyle movements of the left and the right sides,. During mandibular open andclose, protrusion and reptrusion in right-and-left, the movements of the right condyle arebigger than that of the left side, there are significant differences. During mandibularmedio movement, the ranges of condyle movement of the no-work sides are bigger thanthat of work sides, the differences are greatly significant. in other directions, there are nosigificant difference.2. Compared between Angleâ…¢malocclusion with TMD and Angleâ…¢malocclusiongroupDuring mandible open and close, protrusion and reptrution and mediomovement, the range of condyle pathways of Angleâ…¢malocclusion with TMD in anydirections are bigger than that of the normal group, especially in vertical there havegreatly significant differences.3. Compared between Angleâ…¢malocclusion with TMD and Normal groupThere are greatly variation in the range of condyle pathways transversely, except inwork sides during mandible medio-free, the condyle movements of Angleâ…¢malocclusionwith TMD are bigger than that of Normal group, the condyle movements ranges in anydirections are smaller than those of Normal group, especially during protrusion and reptrution in horizon and maximum space displacement and medio-right movements inmaximum space displacement.Conclusion:1. Angleâ…¢malocclusion with TMD condyle movement static traces are asymmetriccurve. Open and close traces intercross are high. The condyle movements are scatteredamong individuals in any directions. But to the individuals condyle movement statictraces are stabilization. There are found side displacements.2.. Find out the movement range of Angleâ…¢malocclusion with TMD of people in thisstudy.3 the condyle movements of Angleâ…¢malocclusion with TMD,Angleâ…¢malocclusionand normal occlusion are scattered among individuals in any directions.4. Angleâ…¢malocclusion with TMD Compared with Angleâ…¢malocclusion and thenormal group.In Angleâ…¢malocclusion with TMD. there have greatly significant variations,transversely. During mandible open and close, the protrusion and reptrution in anydirections and medio movement in no-work sides,the range of condyle pathways of Angleâ…¢malocclusion with TMD are bigger than the Angleâ…¢malocclusion but shorterthan that of the normal group. During medio movement in work sides, the range ofcondyle pathways of Angleâ…¢malocclusion with TMD are biggest in the Angleâ…¢malocclusion and the normal group.