Comparison of tooth movement and biological response in corticotomy and micro-osteoperforation in rabbits
김정한, 국윤아, Bayome Mohamed, 박재현, 이원, 최호재, Abbas Noha H.,
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김정한 ( Kim Jung-Han ) - Catholic University Graduate School
국윤아 ( Kook Yoon-Ah ) - Catholic University College of Medicine Seoul St. Mary’s Hospital Department of Orthodontics
( Bayome Mohamed ) - King Faisal University College of Dentistry Department of Preventive Dentistry
박재현 ( Park Jae-Hyun ) - A.T. Still University Arizona School of Dentistry & Oral Health Postgraduate Orthodontic Program
이원 ( Lee Won ) - Catholic University College of Medicine Uijeongbu St. Mary’s Hospital Department of Dentistry
최호재 ( Choi Ho-Jae ) - A.T. Still University Arizona School of Dentistry & Oral Health Postgraduate Orthodontic Program
( Abbas Noha H. ) - Ain Shams University Faculty of Dentistry Department of Orthodontics
Abstract
Objective: The aim of this study was to evaluate the amount of tooth movement and histologic changes with different corticotomy designs and micro-osteoperforation in rabbits.
Methods: The sample consisted of 24 rabbits divided into three experimental groups (triangular corticotomy [TC] and indentation corticotomy [IC] with flap, and flapless micro-osteoperforations [MP]) and a control. A traction force of 100 cN was applied by connecting the first premolars to the incisors. The amount of tooth movement was measured. Kruskal?Wallis test was used to assess differences in tooth movement between the groups. Micro-computed tomography, hematoxylin and eosin staining, and tartrate-resistant acidic phosphatase (TRAP) analysis were performed. Analysis of variance was applied to assess differences in TRAP-positive osteoclast count between the groups.
Results: The amount of tooth movement increased by 46.5% and 32.0% in the IC and MP groups, respectively, while the bone fraction analysis showed 69.7% and 8.5% less mineralization compared to the control. There were no significant intergroup differences in the number of TRAP-positive osteoclasts.
Conclusions: The micro-osteoperforation group showed no significant differences in the amount of tooth movement compared to the corticotomy groups, nor in the TRAP-positive osteoclast count compared to both corticotomy groups and control.
키워드
Histology; Corticotomy; Tooth movement; Root resorption
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