Subnasal modified Le Fort I osteotomy: Indications and results |
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| Institution: | 1. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China;2. Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, Boston, MA, USA;3. Center of Orthognathic and Temporomandibular Joint Surgery, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China;1. Assistant Professor, Craniofacial Center, Divisions of Oral and Maxillofacial Surgery and Plastic and Craniofacial Surgery, and Craniofaical Image Analysis Laboratory (CranIAL), Seattle Children’s Hospital, Seattle, WA;2. Director, Craniofacial Center, Divisions of Oral and Maxillofacial Surgery and Plastic and Craniofacial Surgery, and Craniofaical Image Analysis Laboratory (CranIAL), Seattle Children’s Hospital, Seattle, WA;3. Associate Professor, Craniofacial Center, Divisions of Oral and Maxillofacial Surgery and Plastic and Craniofacial Surgery, and Craniofacial Image Analysis Laboratory (CranIAL), Seattle Children’s Hospital, Seattle, WA;1. Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands;2. 3D Facial Imaging Research Group Nijmegen–Bruges, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands;3. Department of Otorhinolaryngology, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands;4. Department of Oral and Maxillofacial Surgery, Isala Klinieken, Zwolle, Netherlands;1. Scottish Craniofacial Research Group, University of Glasgow, MVLS College, School of Medicine, Dental School, Glasgow, UK;2. Orthodontic Department, Dental School, University of Leeds, Leeds, UK;3. Honorary research fellow, Glasgow Dental School, University of Glasgow, Glasgow, UK;4. Medical Device Unit, Department of Clinical Physics and Bioengineering, NHS Greater Glasgow and Clyde, Glasgow, UK;1. Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taipei, Taiwan;2. Craniofacial Research Centre, Chang Gung Memorial Hospital, Linkou, Taiwan;3. Graduate Institute of Craniofacial and Oral Science, Chang Gung University, Taoyuan, Taiwan;4. Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan |
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| Abstract: | PurposeTo study the possible morphologic changes in the nose after subnasal modified Le Fort I maxillary osteotomy to correct class III dentofacial deformities in patients with considered normal nasal morphology.Material and methodsFifteen patients (7 males, 8 females) requiring maxillary advancement to treat class III dentofacial deformities were studied prospectively between January 2004 and January 2011. All the patients had an adequate projection of the nasal tip preoperatively preventing a conventional Le Fort I osteotomy. Patients received preoperatively (T1), 6 months after surgery (T2), and 12 months after the initial surgical procedure (T3) lateral cephalograms, CT-3D studies and clinical nose analysis to measure different morphologic variables including: the alar/nose base width, nasal tip protrusion and nasal bridge length using a digital sliding calliper directly on the soft-tissue surface of the face.ResultsMean age was 26.2 years, range 20–36 years. A significant advancement of the maxilla was noted postoperatively (mean 7.5 mm). After surgery the different anthropometric variables of the nasal region analysed had not suffered any significant variation. No significant differences were found when comparing T2 with T3 measures. No significant complications were found.ConclusionThe results indicated that maxillary advancement using a subnasal modified Le Fort I osteotomy can prevent undesirable soft tissue changes of the nose when anterior repositioning of the maxilla is indicated in patients with preoperatively normal nasal morphology. |
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| Keywords: | Orthognathic surgery Maxillary osteotomies Dentofacial deformity Nasal morphology |
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