@article{oai:nagasaki-u.repo.nii.ac.jp:00004743,
 author = {Ohba, Seigo and Nakao, Noriko and Nakatani, Yuya and Yoshimura, Hitoshi and Minamizato, Tokutaro and Kawasaki, Takako and Yoshida, Noriaki and Sano, Kazuo and Asahina, Izumi},
 issue = {6},
 journal = {The Journal of Craniofacial Surgery},
 month = {Sep},
 note = {Few reports have so far evaluated the maxillary stability after LeFort I osteotomy (L-1) for pitch correction. In the current study, the authors assessed the SN-PP (palatal plane) to evaluate the skeletal stability after osteotomy with clockwise or counter-clockwise rotation and investigated the effects of anterior nasal spine (ANS) and posterior nasal spine (PNS) movement on the stability of the SN-PP. The SN-PP and the positions of ANS, PNS, and point A were measured on lateral cephalograms before surgery (T1), immediately after surgery (T2), and more than 1 year after surgery (T3). All measured angle and points were stable in 4 cases of counterclockwise rotation. In the 16 cases of clockwise rotation, T3-T2 of SN-PP, ANS, and point A was ?2.058 ?2.56 mm, and ?1.64 mm, when the SN-PP increased more than 48 after osteotomy. When the ANS moved downward more than 3 mm, the ANS and point A relapsed significantly by 2.75 and 2.31 mm, while the SN-PP relapsed 1.618 more than 1 year after surgery. When the SN-PP increased by more than 48 or the ANS moved downward by more than 3 mm, the authors suggest shifting the PNS upward instead of moving the ANS downward., The Journal of Craniofacial Surgery, 26(6), pp.e481-e485; 2015},
 pages = {e481--e485},
 title = {Effects of Vertical Movement of the Anterior Nasal Spine on the Maxillary Stability After LeFort I Osteotomy for Pitch Correction},
 volume = {26},
 year = {2015}
}