@article{oai:mdu.repo.nii.ac.jp:00000578, author = {NAKAMURA, KOYO and NAGATA, NORIO and IIDA, YOSHIRO and IIDA, KAYO and KAGEYAMA, TORU and ISHII, NOBUYUKI}, issue = {3}, journal = {松本歯学}, month = {Dec}, note = {application/pdf, The purpose of this clinical research was to examine the racial differences in skeletal morphology of skeletal Class III abnormalities and in the ortho-surgical treatment outcome of Class III malocclusion associated with mandibular setback sagittal osteotomy between Japanese and British Caucasian female adult Class III patients. The sample consisted of 35 Class III Japanese female surgical subjects in MDU Hospital and 30 Class III British subjects (23 female and 7 male). The operative procedure was solely a backward sliding sagittal split osteotomy with a wire fixation. True skeletal open bite cases associated with high mandibular plane angle were excluded. The original skeletal differences in Japanese and British Caucasian Class III subjects showed a significant difference in the length of the anterior cranial base (S-N) (p<0.001). The Japanese Class III subjects showed a significant difference in the parameters of U 1-UR and L 1-LR to palatal plane and Go-Me to palatal plane (p<0.001), and in the axis of maxillary incisor to S-N (p<0.01) and S-N-L 1 (p<0.05). At post-retention (1 year after op.), Go-Me to ANS-PNS and the length of Go to the palatal plane and Ar-Go (ramus height) related to the vertical position of point Go showed a larger difference (from p<0.05, 0.01 to 0.001). The Japanese surgical cases showed a more vertical problem with the increased mandibular plane angle compared to the British Caucasians.}, pages = {288--293}, title = {Difference in treatment outcome of British and Japanese surgical class III patients associated with mandibular setback}, volume = {29}, year = {2003} }