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Computed tomographic analysis of tooth-bearing alveolar bone for orthodontic miniscrew placement

Authors
 Kee-Joon Lee  ;  Euk Joo  ;  Kee-Deog Kim  ;  Jong-Suk Lee  ;  Young-Chel Park  ;  Hyung-Seog Yu 
Citation
 AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, Vol.135(4) : 486-494, 2009 
Journal Title
 AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS 
ISSN
 0889-5406 
Issue Date
2009
MeSH
Adult ; Alveolar Process/anatomy & histology* ; Alveolar Process/diagnostic imaging ; Anatomy, Cross-Sectional ; Bicuspid/anatomy & histology ; Bicuspid/diagnostic imaging ; Bone Screws ; Cephalometry ; Dental Arch/anatomy & histology* ; Dental Arch/diagnostic imaging ; Dental Implantation, Endosseous/standards* ; Dental Implants ; Female ; Humans ; Male ; Mandible/anatomy & histology ; Mandible/diagnostic imaging ; Maxilla/anatomy & histology ; Maxilla/diagnostic imaging ; Middle Aged ; Molar/anatomy & histology ; Molar/diagnostic imaging ; Orthodontic Anchorage Procedures/standards* ; Reference Values ; Tomography, X-Ray Computed ; Tooth Apex/anatomy & histology* ; Tooth Apex/diagnostic imaging ; Young Adult
Abstract
INTRODUCTION: When monocortical orthodontic miniscrews are placed in interdental alveolar bone, the safe position of the miniscrew tip should be ensured. This study was designed to quantify the periradicular space in the tooth-bearing area to provide practical guidelines for miniscrew placement. METHODS: Computerized tomographs of 30 maxillae and mandibles were taken from nonorthodontic adults with normal occlusion. Both mesiodistal interradicular distance and bone thickness over the narrowest interradicular space (safety depth) were measured at 2, 4, 6, and 8 mm from the cementoenamel junction. RESULTS: Mesiodistal space greater than 3 mm was available at the 8-mm level in the maxillary anterior region, between the premolars, and between the second premolar and the first molar at 4 mm. In the mandible, sufficient mesiodistal space was found between the premolars, between the molars, and between the second premolar and the first molar at the 4-mm level. Safety depth greater than 4 mm was found in the maxillary and mandibular intermolar regions, and between the second premolar and the first molar in both arches. CONCLUSIONS: Subapical placement is advocated in the anterior segment. Premolar areas appear reliable in both arches. Angulated placement in the intermolar area is suggested to use the sufficient safety depth in this area
Full Text
http://www.sciencedirect.com/science/article/pii/S0889540608011268
DOI
10.1016/j.ajodo.2007.05.019
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Advanced General Dentistry (통합치의학과) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kee Deog(김기덕) ORCID logo https://orcid.org/0000-0003-3055-5130
Park, Young Chel(박영철)
Yu, Hyung Seog(유형석) ORCID logo https://orcid.org/0000-0002-1275-5078
Lee, Kee Joon(이기준) ORCID logo https://orcid.org/0000-0002-0782-3128
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/103639
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