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学科主题: 口腔医学
题名:
Evaluation of root and alveolar bone development of unilateral osseous impacted immature maxillary central incisors after the closed-eruption technique
作者: Shi, Xiangru1; Xie, Xiaoyan2; Quan, Junkang1; Wang, Xiaozhe1; Sun, Xiangyu1; Zhang, Chenying1; Zheng, Shuguo1
刊名: AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS
发表日期: 2015-10-01
DOI: 10.1016/j.ajodo.2015.04.035
卷: 148, 期:4, 页:587-598
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]: ORTHODONTIC TREATMENT ; PERIODONTAL EVALUATION ; RESORPTION ; CANINES ; TERM
英文摘要:

Introduction: In this study, we evaluated root and alveolar bone development in unilateral osseous impacted immature maxillary central incisors by cone-beam computed tomography before and after closed-eruption treatment, in comparison with naturally erupted contralateral immature maxillary central incisors. Methods and Results: The study included 30 patients, 20 boys and 10 girls, with a mean age of 8.44 +/- 1.20 years (range, 6.5-11.2 years). After treatment, the root lengths of both the impacted maxillary central incisors (10.66 +/- 2.10 mm) and the contralateral maxillary central incisors (11.04 +/- 1.76 mm) were significantly greater than their pretreatment values (6.67 +/- 1.94 and 9.02 +/- 2.13 mm, respectively). The root canal widths of the incisors decreased significantly after treatment. From the posttreatment cone-beam computed tomography images, the ratio of exposed root length to total root length and the thickness of the alveolar bone at 1 mm under the alveolar crest and at the apex were calculated to evaluate alveolar bone development. Impacted immature maxillary central incisors differed significantly from contralateral immature maxillary central incisors in labial exposed root length, labial ratio to total root length, and lingual alveolar crest. Clinical crown height was higher (statistically but not clinically) for the impacted incisors (9.87 mm) than for the contralateral incisors (9.37 mm). Conclusions: Impacted immature incisors grew to the same stage as did erupted contralateral incisors after closed-eruption treatment. Both incisor types had some alveolar bone loss, and thin alveolar bone surrounded the roots.

语种: 英语
所属项目编号: Z121107001012029 ; PKUSSNCT-07A06
项目资助者: Capital Foundation for Clinical Characteristics and Application Research ; Program for New Clinical Techniques and Therapies of Peking University School and Hospital of Stomatology
WOS记录号: WOS:000364165900015
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/63695
Appears in Collections:北京大学口腔医学院_口腔预防保健科_期刊论文

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作者单位: 1.Peking Univ, Sch & Hosp Stomatol, Dept Prevent Dent, Beijing 100081, Peoples R China
2.Peking Univ, Sch & Hosp Stomatol, Dept Oral & Maxillofacial Radiol, Beijing 100081, Peoples R China

Recommended Citation:
Shi, Xiangru,Xie, Xiaoyan,Quan, Junkang,et al. Evaluation of root and alveolar bone development of unilateral osseous impacted immature maxillary central incisors after the closed-eruption technique[J]. AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS,2015,148(4):587-598.
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