Histologic assessment of the biological effects after speedy surgical orthodontics in a beagle animal model: a preliminary study
김홍숙, 이영준, 박영국, 정규림, 강윤구, 추혜란, 김성훈,
소속 상세정보
김홍숙 ( Kim Hong-Suk ) - Kyung Hee University School of Dentistry Department of Orthodontics
이영준 ( Lee Young-Jun ) - Kyung Hee University School of Dentistry Department of Orthodontics
박영국 ( Park Young-Guk ) - Kyung Hee University School of Dentistry Department of Orthodontics
정규림 ( Chung Kyu-Rhim ) - Ajou University School of Medicine Department of Dentistry
강윤구 ( Kang Yoon-Goo ) - Kyung Hee University School of Dentistry Department of Orthodontics
추혜란 ( Choo Hye-Ran ) - Childrens’ Hospital of Phildelphia Department of Craniofacial Orthodontics
김성훈 ( Kim Seong-Hun ) - Kyung Hee University School of Dentistry Department of Orthodontics
KMID : 0361920110410050361
Abstract
Objective:Speedy surgical orthodontics (SSO), an innovative orthodontic treatment, involves the application of orthopedic forces against temporary skeletal anchorage devices following perisegmental corticotomy to induce movement of specific dental segments. Herein, we report the biological effects of SSO on the teeth and periodontal structures.
Methods:Five beagle dogs were divided into 2 groups and their 6 maxillary incisors were retracted en masse by applying 500 g orthopedic force against a single palatal mini-plate. Retraction was performed without and with perisegmental corticotomy in groups I and II, respectively. All animals were killed on the 70th day, and their periodontal structures were processed for histologic analyses and scanning electronic microscopy (SEM). The linear distance between the third maxillary incisor and canine was used as a benchmark to quantify the retraction amount.
Results:Retraction was markedly faster and retraction amount greater in group II than in Group I. Surprisingly, Group II did not show any root resorption despite extensive retraction, while Group I showed prominent root surface irregularities. Similarly, SEM showed multiple resorption lacunae in Group I, but not in Group II.
Conclusions:SSO is an effective and favorable orthodontic approach for major en masse retraction of the maxillary anterior teeth.
키워드
Speedy surgical orthodontics; Perisegmental corticotomy; Compression osteogenesis; en masse retraction; Root resorption; Mini-plate; Temporary skeletal anchorage device
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