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Tooth-borne distraction of the lower anterior subapical segment for correction of class II malocclusion, subsequent to genioplasty.

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Title: Tooth-borne distraction of the lower anterior subapical segment for correction of class II malocclusion, subsequent to genioplasty.
Authors: Matsushita, Kazuhiro Browse this author →KAKEN DB
Inoue, Nobuo Browse this author →KAKEN DB
Yamaguchi, Hiro-o Browse this author
Ooi, Kazuhiro Browse this author
Totsuka, Yasunori Browse this author →KAKEN DB
Keywords: Distraction osteogenesis
Orthognathic surgery
Skeletal class II
Alveolar bone
Issue Date: Sep-2011
Publisher: Springer
Journal Title: Oral and maxillofacial surgery
Volume: 15
Issue: 3
Start Page: 183
End Page: 188
Publisher DOI: 10.1007/s10006-010-0242-9
PMID: 20635106
Abstract: Introduction: Alveolar distraction is mainly used to increase height and width of the alveolar crest. This technique, however, is not typically used for lengthening the perimeter of the dental arch or improving teeth axes. We applied alveolar distraction in a tooth-borne manner in the second stage of our original method and obtained favorable results. We therefore present an outline of this method. Case Report: Genioplasty was first performed to create an infrastructure for sequential advancement of the subapical alveolar segment. After bone union, anterior subapical alveolar osteotomy was performed. The stump of the osteotomized dentate segment was moved forward without changing the incisal edge position, and a box-type bioabsorbable plate with four holes was fixed only onto the dentate segment using two screws. After a latency period, two distraction devices were placed bilaterally to the brackets and activated at 1.0 mm/day. After reaching the desired position, the distractor was immobilized, and then replaced by resin temporary teeth to retain the created space. After the consolidation period, orthodontic treatment was restarted and teeth moved into the newly created space. Bimaxillary surgery was performed after completing pre-surgical orthodontic treatment. Finally, both desirable occlusion and functional masticatory function were obtained. Conclusion: This tooth-borne distraction system is one applicable method for patients with skeletal class II and crowding of lower anterior teeth, achieving good results particularly in combination with our original method.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 松下 和裕

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