Hounsfield Unit Change in Root and Alveolar Bone during Canine Retraction

	Hounsfield Unit Change in Root and Alveolar Bone during Canine Retraction
	Feifei Jiang; Sean Shih-Yao Liu; Zeyang Xia; Shuning Li; Jie Chen; Katherine S.Kula; George Eckert
刊名	American Journal of Orthodontics and Dentofacial Orthopedics
	2015
英文摘要	Introduction: The objective of this study was to determine the Hounsfield unit (HU) changes in the alveolar bone and root surfaces during controlled canine retractions. Methods: Eighteen maxillary canine retraction patients were selected for this split-mouth design clinical trial. The canines in each patient were randomly assigned to receive either translation or controlled tipping treatment. Pretreatment and posttreatment cone-beam computed tomography scans of each patient were used to determine tooth movement direction and HU changes. The alveolar bone and root surface were divided into 108 divisions, respectively. The HUs in each division were measured. Mixed-model analysis of variance was applied to test the HU change distribution at the P\0.05 significance level. Results: The HU changes varied with the directions relative to the canine movement. The HU reductions occurred at the root surfaces. Larger reductions occurred in the divisions that were perpendicular to the moving direction. However, HUs decreased in the alveolar bone in the moving direction. The highest HU reduction was at the coronal level. Conclusions: HU reduction occurs on the root surface in the direction perpendicular to tooth movement and in the alveolar bone in the direction of tooth movement when a canine is retracted.
收录类别	SCI
原文出处	http://www.ajodo.org/article/S0889-5406(14)01158-5/pdf
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/6611]
专题	深圳先进技术研究院_集成所
作者单位	American Journal of Orthodontics and Dentofacial Orthopedics
推荐引用方式 GB/T 7714	Feifei Jiang,Sean Shih-Yao Liu,Zeyang Xia,et al. Hounsfield Unit Change in Root and Alveolar Bone during Canine Retraction[J]. American Journal of Orthodontics and Dentofacial Orthopedics,2015.
APA	Feifei Jiang.,Sean Shih-Yao Liu.,Zeyang Xia.,Shuning Li.,Jie Chen.,...&George Eckert.(2015).Hounsfield Unit Change in Root and Alveolar Bone during Canine Retraction.American Journal of Orthodontics and Dentofacial Orthopedics.
MLA	Feifei Jiang,et al."Hounsfield Unit Change in Root and Alveolar Bone during Canine Retraction".American Journal of Orthodontics and Dentofacial Orthopedics (2015).