中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (20): 3658-3665.doi: 10.3969/j.issn.2095-4344.2013.20.007

• 口腔组织构建 oral tissue construction • 上一篇    下一篇

尼古丁对大鼠实验性牙移动牙根吸收的影响

祖丽呼玛•阿热甫江1,潘  旭1, 2,米丛波1, 2   

  1. 1新疆医科大学第一附属医院口腔正畸科,新疆维吾尔自治区乌鲁木齐市  830054
    2新疆医科大学口腔医学院口腔正畸教研室,新疆维吾尔自治区乌鲁木齐市  830054
  • 收稿日期:2012-12-07 修回日期:2012-12-27 出版日期:2013-05-14 发布日期:2013-05-14
  • 通讯作者: 米丛波,主任医师,硕士生导师,新疆医科大学第一附属医院口腔正畸科,新疆维吾尔自治区乌鲁木齐市 830054;新疆医科大学口腔医学院口腔正畸教研室,新疆维吾尔自治区乌鲁木齐市 830054 mi670105@sina.com
  • 作者简介:祖丽呼玛?阿热甫江★,女,新疆维吾尔自治区人,维吾尔族,2010年大连医科大学毕业,新疆医科大学在读硕士,医师,主要从事错牙合畸形的研究。 并列第一作者:潘旭,女,山东省人,汉族,2010年毕业于新疆医科大学,硕士,主治医师,主要从事错牙合畸形的研究。
  • 基金资助:

    实验由新疆医科大学第一附属医院青年科研专项基金资助(2011QN05Z),课题名称:尼古丁对正畸力作用下大鼠牙周组织改建的影响。

Nicotine inhibits root resorption induced by experimental tooth movement in rats

Zulihuma•Arefujiang1, Pan Xu1, 2, Mi Cong-bo1, 2   

  1. 1 Department of Orthodontics, the First Affiliated Hospital of Xinjiang Medical University, Urumqi   830054, Xinjiang Uygur Autonomous Region, China
    2 Department of Orthodontics, Stomatology College of Xinjiang Medical University, Urumqi  830054, Xinjiang Uygur Autonomous Region, China
  • Received:2012-12-07 Revised:2012-12-27 Online:2013-05-14 Published:2013-05-14
  • Contact: Mi Cong-bo, Chief physician, Master’s supervisor, Department of Orthodontics, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; Department of Orthodontic, Stomatology College of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China mi670105@sina.com
  • About author:Zulihuma?Arefujiang★, Studying for master’s degree, Physician, Department of Orthodontics, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China Pan Xu★, Master, Attending physician, Department of Orthodontics, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; Department of Orthodontic, Stomatology College of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China Zulihuma?Arefujiang and Pan Xu contributed equally to this paper.
  • Supported by:

    Special Fund for Young Researchers of the First Affiliated Hospital of Xinjiang Medical University, No. 2011QN05Z

摘要:

背景:吸烟严重影响牙周组织及牙根的健康,烟草中的尼古丁会加速牙周病患者牙周组织的破坏,影响骨改建,引起骨吸收。而整合素αvβ3参与正畸牙移动过程中的牙根吸收。
目的:以整合素αvβ3在破牙骨质细胞的表达量为主要观察指标,初步探讨尼古丁对正畸牙移动牙根吸收的影响。
方法:将110只实验SD大鼠随机分为空白对照组、生理盐水组以及0.5 mg/kg尼古丁组、0.75 mg/kg尼古丁组、1 mg/kg尼古丁组。后4组上颌第一磨牙施加50 g近中向拉力,同时每日向各组的大鼠腹腔注射一定剂量的尼古丁酒石酸溶液或生理盐水,运用苏木精-伊红染色和免疫组织化学染色,观察各组大鼠上颌第一磨牙加力1,3,5,7,14 d的组织变化情况和整合素αvβ3的表达量。
结果与结论:随着加力时间的延长的,牙根周围的牙周膜纤维变形,排列紊乱,炎性细胞浸润,压力侧、张力侧以及根分叉处牙根表面开始出现吸收陷窝、破牙骨质细胞。尼古丁注射的剂量越大,牙根表面的吸收陷窝越多越深,破牙骨质细胞显著增加。免疫组化染色结果显示,除空白对照组外,整合素αvβ3在各个实验组的破牙骨质细胞中表达,并且随着加力时间的延长,其表达强度增强,加力7 d时呈现强阳性表达,加力达到14 d时,表达随之减弱。随着尼古丁注射剂量的增加,整合素αvβ3阳性表达的破牙骨质细胞逐渐增加。结果说明,尼古丁会加重正畸牙移动过程中的牙根吸收,并且可能具有时间依赖性以及剂量依赖性。

关键词: 组织构建, 口腔组织构建, 正畸学, 牙移动, 牙根吸收, 尼古丁, 整合素αv, 整合素β3, 其他基金

Abstract:

BACKGROUND: Cigarette smoking can seriously affect the periodontal tissues and root, and nicotine in tobacco can increase the progression of periodontal disease and influence bone remodeling thus leading to bone resorption. While intergrin αvβ3 participates in the root resorption induced by orthodontic tooth movement.
OBJECTIVE: To investigate the effect of nicotine on root resorption induced by orthodontic tooth movement based on the indicators of intergrin αvβ3 expression in the odontoclasts.
METHODS: A total of 110 Sprague-Dawley rats were randomly divided into the blank control group, normal saline group, 0.5 mg/kg nicotine group, 0.75 mg/kg nicotine group and 1 mg/kg nicotine group. In the last four groups, 50 g force was exposed on the maxillary first molar, and intraperitoneal injection of nicotine tartrate solution or saline in a certain dose was performed daily. Then the histological changes and expression of intergrin αvβ3 were observed after exposed force on the maxillary first molar for 1, 3, 5, 7 and 14 days using hematoxylin-eosin staining and immunohistochemical staining.
RESULTS AND CONCLUSION: With the prolonging of time for exposing force, the periodontal ligament fibers around the root were distorted and lost normal shape, and inflammatory cell infiltration could be seen. Resorption lacuna and odontoclasts were found on the root surface in the pressure side and tension side as well as the root bifurcation. The dose of nicotine injection, the number and depth of resorption lacuna on the root surface and the number of odontoclasts showed a dose-dependent manner. Immunohistochemical staining result showed that expression of intergrin αvβ3 could be seen in each group, except for the blank control group, and the expression intensity was increased with the prolonging of the time for force; the intergrin αvβ3 positive expression was strong after forced for 7 days, and decreased when forced for 14 days. The number of odontoclasts expressing intergrin αvβ3 was increased with the increasing of the nicotine dose. Nicotine may increase the root resorption in orthodontic tooth movement, and this effect may be in time- and dose-dependent manner.

Key words: tissue construction, oral tissue construction, orthodontics, tooth movement, root resorption, nicotine, integrin αv, integrin β3, other grants-supported paper

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