中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (4): 542-547.doi: 10.3969/j.issn.2095-4344.0087

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

口服避孕药对大鼠正畸牙牙周组织改建的影响

周翊飞,郑  茜,毛  杰,吕佳岭,吴晓玲,徐晓梅   

  1. 西南医科大学附属口腔医院口腔正畸科,四川省泸州市  646000
  • 收稿日期:2017-11-25 出版日期:2018-02-08 发布日期:2018-02-08
  • 通讯作者: 徐晓梅,博士,副教授,硕士生导师,西南医科大学附属口腔医院口腔正畸科,四川省泸州市 646000
  • 作者简介:周翊飞,男,1989年生,四川省阆中市人,西南医科大学在读硕士,医师,主要从事错牙合畸形的矫治方面的研究。
  • 基金资助:

    四川省教育厅项目(重点项目:16ZA0188);四川省科技厅科技计划项目(2015JY0119);四川省科技厅-泸州市-泸州医学院联合项目(LZ-LY-59)

Combined oral contraceptives facilitate periodontium remodeling during orthodontic tooth movement in rats

Zhou Yi-fei, Zheng Qian, Mao Jie, Lv Jia-ling, Wu Xiao-ling, Xu Xiao-mei   

  1. Department of Orthodontics, Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Received:2017-11-25 Online:2018-02-08 Published:2018-02-08
  • Contact: Xu Xiao-mei, M.D., Associate professor, Master’s supervisor, Department of Orthodontics, Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Zhou Yi-fei, Studying for master’s degree, Physician, Department of Orthodontics, Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:

    the Project of Education Department of Sichuan Province, No. 16ZA0188; the Science and Technology Program of Science and Technology Department of Sichuan Province, No. 2015JY0119; the Joint Project of Science and Technology Department of Sichuan Province-Luzhou Municipality-Luzhou Medical University, No. LZ-LY-59

摘要:

文章快速阅读:


文题释义:
正畸牙移动:正畸牙移动是正畸治疗进行的前提,是在机械力的负载下,依靠牙槽骨的可塑性、牙骨质的抗压性、牙周膜内环境的稳定性,以及牙齿受力后的组织改建,从而达到牙齿移动、矫治畸形的目的。目前,通过正畸治疗技术可以治疗绝大部分错牙合畸形,但如何在生理允许范围内加速正畸牙齿移动是正畸医生关心的方向。
牙周组织改建:牙周组织改建是正畸牙移动的基础,其实质就是通过对牙周膜产生牵张或压缩的力来引起牙周组织在生理限度内的组织改建,包括牙龈、牙周膜、牙槽骨等牙周组织的改建,牙周膜在机械力作用下张力侧受牵拉,成骨细胞数目增加,周围出现新生骨质,压力侧牙周膜受压发生形变,牙槽骨表面出现骨吸收陷窝,破骨细胞数目增加,牙槽骨吸收明显;牙槽骨代谢速率决定了正畸牙移动的速度,影响正畸治疗的疗程长短。

 

摘要
背景:
课题组前期研究发现口服避孕药的摄入会减慢正畸牙移动的速率,文章主要探讨的问题是口服避孕药对大鼠正畸牙移动过程中牙周组织改建的影响。
目的:探讨复方口服避孕药对正畸牙牙周组织中孕激素受体、骨保护素、破骨细胞的影响。
方法:3月龄的80只雌性SD大鼠随机分为2组,每组40只。实验组大鼠每日定时灌服复方口服避孕药去氧孕烯炔雌醇,对照组大鼠定时灌服等量的生理盐水。给药7 d后应用螺旋拉簧以50 g力作用于大鼠的右上颌第一磨牙,使其近中移动。加力7,14,21和28 d分别处死大鼠取材,免疫组织化学染色法观察大鼠牙周组织中孕激素受体、骨保护素的表达水平,TRAP染色计数牙周组织中活化破骨细胞的数目。
结果与结论:①在加力28 d,实验组牙周组织中孕激素受体表达量为0.307±0.03,显著高于对照组(0.194± 0.11,P < 0.01);②加力7,14,21,28 d对照组大鼠第一磨牙近中的破骨细胞数目均多于同时段实验组(P < 0.05);③加力第28天实验组骨保护素的平均吸光度值高于对照组(0.037/0.006,P < 0.01);④结果表明正畸治疗中服用复方口服避孕药可促进牙周组织的成骨而减缓骨吸收,进而减缓正畸力作用下大鼠牙周组织改建速率。提示有复方口服避孕药用药史的女性患者其正畸疗程可能会延长。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0003-2211-655X(徐晓梅)

关键词: 避孕药, 孕激素受体, 骨保护素, 破骨细胞, 免疫组化, 组织构建, 骨组织工程, 牙周组织, 正畸牙移动, 治疗, 雌激素, 孕激素

Abstract:

BACKGROUND: Preliminary studies have found that the oral intake of contraceptives reduces the rate of orthodontic tooth movement. This study mainy explores the effects of oral contraceptives on periodontium remodeling during orthodontic tooth movement in a female rat model.
OBJECTIVE: To investigate the effects of combined oral contraceptives (COCs) on the expression levels of progesterone receptor and osteoprotegerin, as well as the number of osteoclasts in the periodontium during orthodontic tooth movement.
METHODS: Eighty 3-month-old female Sprague-Dawley rats were randomly divided into two groups (n=40 per group), and COCs (marvelon, experimental group) or normal saline (control group) was then given by gavage. At 7 days after administration, the right maxillary first molars were moved mesially under a force of 50 g delivered by nickel-titanium coil springs, and 10 rats were killed on day 7, 14, 21 and 28 after loading, respectively. The expression levels of progesterone receptor and osteoprotegerin in the periodontium were detected by immunohistochemistry, and the number of activated osteoclasts was measured by tartrate-resistant acid phosphatase staining.
RESULTS AND CONCLUSION: At 28 days after force loading, the expression level of progesterone receptor in the periodontium in the experimental group (0.307±0.03) was significantly higher than that in the control group (0.194±0.11), (P < 0.01). The number of osteoclasts in the maxillary first molars in the experimental group was significantly less than that in the control group at 7, 14, 21 and 28 days after force loading (P < 0.05). The average absorbance value of osteoprotegerin in the experimental group was significantly higher than that in the control group (P < 0.01). These results show that COCs are able to promote osteogenesis and slow bone absorption during periodontal reconstruction, indicating that the course of orthodontic treatment for female patients with a history of COCs intake may be extended.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Contraceptive Agents, Female, Orthodontic Extrusion, Osteoprotegerin, Osteoclasts, Tissue Engineering

中图分类号: