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学科主题: 口腔医学
题名:
A comparison of dental arch forms between Class II Division 1 and normal occlusion assessed by euclidean distance matrix analysis
作者: Nie, Q; Lin, JX
刊名: AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS
发表日期: 2006-04-01
DOI: 10.1016/j.ajodo.2005.12.012
卷: 129, 期:4, 页:528-535
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Dentistry, Oral Surgery & Medicine
研究领域[WOS]: Dentistry, Oral Surgery & Medicine
关键词[WOS]: MALOCCLUSION ; MAXILLARY ; SIZE ; ADULTHOOD ; GROWTH ; SHAPE ; AGE
英文摘要:

The purpose of the study was to use euclidean distance matrix analysis to compare dental arch forms between subjects with Class II Division 1 malocclusions and normal occlusions. Methods: The sample consisted of 60 subjects with Class II Division 1 malocclusions and 60 subjects with normal occlusions, all between 13 and 17 years of age. Fourteen landmarks, corresponding to cusp tips and incisor edges, were identified on the dental casts with a 3-dimensional measuring machine. All possible linear distances between pairs of landmarks in an arch were computed, and arch-form differences between Class II Division 1 and normal-occlusion subjects were tested by euclidean distance matrix analysis. Results: In both sexes, the maxillary arches of the Class II Division 1 subjects were larger than the arches of the normal-occlusion subjects (1.8% and 2.7% larger for girls and boys, respectively), and arch shape was also significantly different (P <.001). The posterior teeth contributed to the shape difference between 2 groups more than the anterior teeth, moreover the main factor was narrow maxillary posterior arch width in the Class II Division 1 subjects. The mandibular arches of the Class II Division 1 subjects were also slightly larger, and arch shape was not significantly different regardless of sex. Conclusions: Expanding the maxillary posterior arch width in Class II Division 1 subjects might be an important method to harmonize maxillary and mandibular arch forms.

语种: 英语
WOS记录号: WOS:000237032300017
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/66004
Appears in Collections:北京大学口腔医学院_牙周科_期刊论文

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作者单位: 1.Peking Univ, Sch Stomatol, Dept Orthodont, Beijing 100081, Peoples R China
2.Peking Univ, Ctr Craniofacial Growth & Dev Res, Beijing 100081, Peoples R China

Recommended Citation:
Nie, Q,Lin, JX. A comparison of dental arch forms between Class II Division 1 and normal occlusion assessed by euclidean distance matrix analysis[J]. AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS,2006,129(4):528-535.
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