RISS 검색 - 국내학술지논문 상세보기

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다국어 초록 (Multilingual Abstract)

The purpose of this study was to find out and evaluate discrepancies between exact and prediction values in ClassⅢsurgical patients. 26 patients(male 12, female 14) who were diagnosed as skeletal ClassⅢ and experienced presurgical orthodontic treatment and orthognathic surgery au Y university dental hospital were selected for this study. Lateral cephalograms were analyzed at prediction(T₁),immediately after surgery(T₂), 1 years after surgery(T₃),and specified the landmark as coodinates of X and Y axes. The samples were divided into 2 groups depending on the rotation point of maxilla(A point vs Incisal Edge).
The statistical tools was SAS program and the statistical significance was tested.
The results were as follows:
1. Changes of hard tissue points (T₁- T₂) in X corrdinates of ANS, A and in y coordinates of Me, Gn, Pg, B,Ii were statistically significant.
2. Change of soft tissue points (T₁- T₂) in X and y corrdinates of Pn,Sn,STA,Ls,Li were statistically significant.
3. Statistically significant changes in maxillary surgery rotated at A point were in X corrdinates of LS,Li and in y corrdinates of Me, Gn, Pg, B,Ii, Gn' and in x,y corrdinates of Pn,Sn,STA.
4. Statistically significant changes in maxillary surgery rotated at Incisal edge were in x corrdinates of ANS,A, Pn, Sn and in y corrdinates of Me, Gn, Pg, B,Ii,Is,Ls,Li,Gn' and in x,y corrdinates of STA.
5. There were significant differences in Is, Pns,Pn compared between A point group and incisal edge rotation group.
6. The maxillary plane angle showed significant difference at T₂- T₃(p<0.05), and occlusal planes of maxilla and mandible did not show significant change after surgery.
As followed above results, the changes between prediction and exact measurements were considered separately at all landmarks and relapse amount according to surgery were also condsidered to achieve more resonable surgical results.