Skeletal anchorage system for open-bite correction |
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| Affiliation: | 1. School of Dentistry, Tohoku University, Japan. Sendai, Japan; Instructor, Department of Orthodontics. Sendai, Japan;2. Associate Professor, Department of Orthodontics. Sendai, Japan;3. Professor and Chairman, Department of Orthodontics. Sendai, Japan;4. Instructor, First Department of Oral and Maxillofacial Surgery. Sendai, Japan;5. Associate Professor, First Department of Oral and Maxillofacial Surgery. Sendai, Japan;1. Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC;2. Private Practice, Carpentras, France;3. Department of Biostatistics, University of North Carolina, Chapel Hill, NC;4. Departments of Orthodontics and Oral and Craniofacial Health Sciences, School of Dentistry, University of North Carolina, Chapel Hill, NC;1. Department of Orthodontics, Araraquara School of Dentistry, São Paulo State University, School of Dentistry, Araraquara, São Paulo, Brazil;2. Department of Orthodontics, São Leopoldo Mandic Institute and Research Center, Campinas, São Paulo, Brazil;3. Department of Pediatric Dentistry, Area of Orthodontics, Araraquara School of Dentistry, São Paulo State University, School of Dentistry, Araraquara, São Paulo, Brazil;1. Hamadan university of medical sciences, dental research centre, orthodontic department, Hamadan, Iran;2. Urumia, Iran;3. Semnan university of medical sciences, dental school, orthodontic department, Semnan, Iran;1. Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Wroclaw Medical University, Wroclaw, Poland;2. Department of Periodontology, Faculty of Dentistry, Wroclaw Medical University, Wroclaw, Poland;1. State Key Laboratory of Military Stomatology, Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi''an, Shaanxi, China;2. 264th Hospital of People''s Liberation Army, Taiyuan, Shanxi, China |
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| Abstract: | A skeletal anchorage system was developed for tooth movements. It consists of a titanium miniplate that is temporarily implanted in the maxilla or the mandible as an immobile anchorage. In this article, we introduce the skeletal anchorage system to intrude the lower molars in open-bite malocclusion and evaluate the results of treatment in two severe open-bite cases that underwent orthodontic treatment with the system. Titanium miniplates were fixed at the buccal cortical bone around the apical regions of the lower first and second molars on both the right and left sides. Elastic threads were used as a source of orthodontic force to reduce excessive molar height. The lower molars were intruded about 3 to 5 mm, and open-bite was significantly improved with little if any extrusion of the lower incisors. No serious side-effects were observed during the orthodontic treatment. The system was also very effective for controlling the cant and level of the occlusal plane during orthodontic open-bite correction. (Am J Orthod Dentofacial Orthop 1999;115:166-74) |
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