Asymmetric mandibular prognathism: Outcome,stability and patient satisfaction after BSSO surgery. A retrospective study |
| |
| Affiliation: | 1. Department of Maxillofacial Surgery (Head: Prof. P. Skjelbred), Oslo University Hospital, P.O.Box 4956 Nydalen, N-0424 Oslo, Norway;2. Department of Orthodontics (Head: Prof. L. Espeland, dr.odont), University of Oslo, Faculty of Dentistry, P.O.Box 1109 Blindern, N-0317 Oslo, Norway;1. Department of Oral and Maxillofacial Surgery, University Medical Centre Groningen, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands;2. Department of Orthodontics, University Medical Centre Groningen, University of Groningen, P.O. Box 30.001, 9700 RB, Groningen, The Netherlands;3. Department of Oral and Maxillofacial Surgery, Rijnstate Hospital Arnhem, 6800 TA Arnhem, P.O. Box 9555, The Netherlands;4. Department of Oral and Maxillofacial Surgery, Amphia Hospital Breda, P.O. Box 90.158, 4800 RK Breda, The Netherlands;5. UMCG Center for Dentistry and Oral Hygiene, Department of Oral Health Care & Clinical Epidemiology, University Medical Centre Groningen, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands;1. Department of Oral and Maxillofacial Surgery, Amphia Hospital, Breda, The Netherlands;2. Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. J.P.R. van Merkesteyn), Leiden University Medical Centre, Leiden, The Netherlands;3. Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. D. Bloomquist), University of Washington, Seattle, USA;4. Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. J. de Lange), Amsterdam Medical Centre, Amsterdam, The Netherlands;1. Assistant Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Thamar University, Thamar, Yemen;2. Professor and Chair, Department of Oral and Maxillofacial Surgery, University of Texas Health Science Center, San Antonio, TX;1. Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, South Korea;2. Department of Orthodontics, School of Dentistry, Pusan National University, Yangsan, South Korea;3. Department of Tissue Engineering, Regea Institute for Regenerative Medicine, University of Tampere, Tampere, Finland;4. Department of Oral and Maxillofacial Surgery, University of Oulu, Oulu, Finland;5. Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, South Korea;6. Dental Research Institute, and Institute of Translational Dental Sciences, Pusan National University, Yangsan, South Korea |
| |
| Abstract: | PurposeTo investigate surgical outcome, long-term stability, the time course of relapse, neurosensory disturbances, and patient satisfaction after BSSO for correction of mandibular asymmetry. Another objective was to examine whether osteotomies for transverse rotation of the distal segment represent an increased risk for nerve injury.Subjects and methodsIn a retrospective study lateral and postero-anterior cephalograms, information from patient files and questionnaires were analysed for 38 patients having more than 4 mm asymmetry at the chin pre-treatment (mean 8.4 mm). The radiographs were analysed preoperatively, postoperatively, after 6 months and 3 years.ResultsAsymmetry of the chin to the facial midline improved on average by 56%. Skeletal relapse was about the same for transverse and antero-posterior surgical changes (10–15%). 58% of the patients had asymmetry of more than 3 mm at menton 3 years post-surgery. Discrepancy between upper and lower dental midlines improved on average 80%. Normal or near normal sensation to the lower lip/chin was reported by 44% of the patients which is similar to sensory disturbances after BSSO straight set-back performed by the same surgical team. A difference in the incidence of neurosensory disturbance between the two osteotomy sides was observed. Satisfaction with the treatment result was reported by all patients except for two.ConclusionCorrection of mandibular asymmetry by BSSO is fairly stable. Although the risk for sensory impairment for the individual patient was similar to impairment in a sample having straight setback, rotation of the distal segment during surgery may represent an increased risk for sensory impairment on the deviating side (P = 0.06). Three years after surgery patients were generally satisfied with the result even if more than 3 mm of asymmetry at the chin remained for 58%. The findings have implications for treatment planning and the decision to elect one-jaw, bimaxillary surgery and/or additional genioplasty. |
| |
| Keywords: | Orthognathic surgery Mandibular prognathism Facial asymmetry Sagittal split osteotomy Sensory impairment |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
