Effects of Vertical Movement of the Anterior Nasal Spine on the Maxillary Stability After LeFort I Osteotomy for Pitch Correction
| Autor: | Takako Kawasaki, Noriko Nakao, Seigo Ohba, Noriaki Yoshida, Kazuo Sano, Hitoshi Yoshimura, Tokutaro Minamizato, Izumi Asahina, Yuya Nakatani |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Adult
Male Rotation Cephalometry medicine.medical_treatment Bone Screws Osteotomy Posterior nasal spine (PNS) SN-PP (palatal plane) Clockwise rotation Counter-clockwise rotation Bone plate Maxilla Medicine Humans Osteotomy Le Fort Nasal Bone Sella Turcica Clockwise business.industry Orthognathic Surgical Procedures Palate Anterior nasal spine General Medicine Anatomy Craniometry Nasal bone Anterior nasal spine (ANS) medicine.anatomical_structure Treatment Outcome Otorhinolaryngology Surgery Female Posterior nasal spine business Bone Plates |
| Zdroj: | The Journal of Craniofacial Surgery. 26(6):e481-e485 |
| ISSN: | 1049-2275 |
| Popis: | 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 |
| Databáze: | OpenAIRE |
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