Three-dimensional morphological analysis of neocondyle bone growth after fibula free flap reconstruction |
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| Affiliation: | 1. Department of Dentistry and Oral Surgery, Tokyo Metropolitan Tama Medical Center, Fuchu-shi, Tokyo, Japan;2. Department of Dentistry and Oral Surgery, Tokyo Metropolitan Bokutoh Hospital, Sumida-ku, Tokyo, Japan;3. Department of Stomatology, Tokyo Metropolitan Ohtsuka Hospital, Toshima-ku, Tokyo, Japan;1. Instituto Português da Face, Lisbon, Portugal;2. Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal;3. Gabinetes Auditivos Portugueses, Lisbon, Portugal;4. Centro de Estatística e Aplicações, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal;5. Department of Computer Science and Quantitative Methods, School of Management and Technology, Polytechnic Institute of Santarém, Portugal;1. Department of Radiotherapy and Medical Oncology, University Hospital for Tumours, University Hospital Center ‘Sisters of Mercy’, Zagreb, Croatia;2. University of Zagreb School of Medicine, Department of Maxillofacial Surgery, University Hospital Dubrava, Zagreb, Croatia;1. Departments of Otorhinolaryngology – Head and Neck Surgery, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea;2. Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea;1. State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China;2. Shanghai Stomatological Hospital, Fudan University, Shanghai, China;3. Department of Stomatology, Sichuan Academy of Medical Science and Sichuan Provincial People’s Hospital, Chengdu, China |
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| Abstract: | The aim of this retrospective study was to verify the three-dimensional morphological change in neocondyle bone growth after fibula free flap (FFF) reconstruction. The independent variables were age, sex, and diagnosis. Outcome variables included the direction and volume of neocondyle bone growth, and the time to a stable neocondyle following bone growth. The outcome variables were measured on postoperative computed tomography scans using iPlan 3.0. Of the 35 patients included, 25 showed neocondyle bone growth. The direction of neocondyle bone growth included the direction of lateral pterygoid traction (DLPT) and the direction towards the glenoid fossa (DGF). The bone growth of the neocondyle showed three patterns: only DLPT (eight patients), only DGF (two patients), and a combination of DLPT and DGF (15 patients). The average volume of bone growth in the 25 patients was 0.479 ± 0.380 cm3. The average volume of neocondyle bone growth was significantly greater in patients aged <18 years (0.746 ± 0.346 cm3) than in patients aged >18 years (0.219 ± 0.191 cm3) (P < 0.001). The time to a stable neocondyle following bone growth was 5.6 months postoperatively. In conclusion, neocondyle bone growth after FFF reconstruction occurred in two different directions, DLPT and DGF. Osteogenesis of the lateral pterygoid muscle affects neocondyle growth with DLPT. Neocondyle bone growth is more marked in paediatric patients than in adults. |
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| Keywords: | mandibular reconstruction fibula osteogenesis pterygoid muscle ankylosis |
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