A comparative cephalometric study of cases with normal occlusion and malocclusions

摘要

The athors made a cephalometric examination ot 60 cases, consisting of three groups: 20 cases of normal occlusion, 20 cases of Class II div. 1 malocclusion and 20 cases of Class II malocclusion. Their intention was to find the mean values of different cephalometric measures in cases with normal occlusion, and to compare these value with those of foreign authors. Analyzing the cases of Class II div. 1 and Class III malocclusions, the authors wanted also to check up whether cephalometric examinations confirm clinical diagnosis. For this purpose following angles were measured: SNA, SNB, ANB, intermaxillary planes angle, gonial angle, the inclination of upper incisors, the inclination of lower incisors and the interincisal angle. All the data were statistically analyzed, and both the mean values and standard deviations for each observed angle were found. The comparison between the mean values in normal occlusion cases in this analysis and those of English, German and American authors was made, and it was found that they do not correspond to each other. The comparison made between cases of normal occlusion and of malocclusions showed that the cephalometric analysis confirms the clinical diagnosis. The authors concluded that it would be necessary to undertake some wide investigation of Yugoslav citizens with normal occlusion in order to establish the mean values of different cephalometric measures.