中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (16): 2562-2556.doi: 10.3969/j.issn.2095-4344.2015.16.019

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

3种不同矫治器正畸作用下牙周骨组织重塑:压力侧破骨细胞分化因子的表达

黄  岩,郭  娜   

  1. 石家庄市第六医院口腔科,河北省石家庄市  050000
  • 收稿日期:2015-03-06 出版日期:2015-04-16 发布日期:2015-04-16
  • 作者简介:黄岩,女,1973年生,天津市人,汉族,2008年河北医科大学口腔医学专业毕业,主治医师,主要从事口腔牙体牙髓病治疗及冠修复研究。

Periodontal tissue remodeling assisted by three kinds of orthodontic appliances: osteoclast differentiation factor mRNA expression under pressure

Huang Yan, Guo Na   

  1. Department of Stomatology, Sixth Hospital of Shijiazhuang, Shijiazhuang 050000, Hebei Province, China
  • Received:2015-03-06 Online:2015-04-16 Published:2015-04-16
  • About author:Huang Yan, Attending physician, Department of Stomatology, Sixth Hospital of Shijiazhuang, Shijiazhuang 050000, Hebei Province, China

摘要:

背景:国内外研究表明破骨细胞分化因子在正畸牙移动骨改建骨重塑过程中与破骨细胞的分化和功能密切相关。
目的:分析3种不同矫治器正畸治疗对大鼠牙周组织重塑过程中压力侧破骨细胞分化因子表达的影响,显示矫治器正畸过程与宿主组织重建的生物相容性。
方法:选取80只健康Wistar大鼠,建立正畸牙移位的大鼠模型,随机数字表法分为4组。对照组、Damon Ⅲ矫治器组、Begg矫治器组、MBT矫治器组。于各组矫治器正畸后3,7,14,21 d各处死4只动物。通过破骨细胞抗酒石酸酸性磷酸酶染色法检测大鼠压力侧牙槽骨组织的破骨细胞数;通过RT- PCR法检测大鼠压力侧的牙周骨组织中破骨细胞分化因子基因的表达变化及时间分布特点。
结果与结论:与对照组相比,不同矫治器组压力侧的牙槽骨组织中的抗酒石酸酸性磷酸酶染色阳性破骨细胞计数和破骨细胞分化因子基因的表达水平随正畸时间的增加而升高,第7天时最高,而后逐渐降低。第7天时Damon Ⅲ矫治器组抗酒石酸酸性磷酸酶染色阳性破骨细胞计数和破骨细胞分化因子基因表达水平高于MBT矫治器组、Begg矫治器组及对照组(P < 0.05)。结果表明在大鼠骨改建过程中破骨细胞分化因子基因表达的变化与破骨细胞抗酒石酸酸性磷酸酶染色阳性破骨细胞数的变化规律一致,第7天时,Damon Ⅲ矫治器组破骨细胞分化因子mRNA表达及破骨细胞数高于其他组。


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

关键词: 生物材料, 口腔生物材料, 破骨细胞分化因子, Damon Ⅲ矫治器, 正畸, 牙周组织

Abstract:

BACKGROUND: Recent studies have shown that osteoclast differentiation factor is closely related to osteoclast differentiation, formation and function in bone remodeling during orthodontic tooth movement.
OBJECTIVE: To observe the effects of three kinds of orthodontic appliances on the expression of osteoclast differentiation factor at the pressure side of rat periodontal tissue during remodeling process and to explore the biocompatibility of the orthodontic appliances with the host tissues during orthodontic treatment.
METHODS: Eighty healthy Wistar rats were selected to establish animal models of orthodontic tooth movement, and then randomly divided into four groups: control group, MBT group, Begg group, Damon III appliance group. Four animal from each group were sacrificed at 3, 7, 14 days after wearing orthodontic appliances. The tartrate-resistant acid phosphatase staining was used to count the osteoclasts at the pressure side of alveolar bone tissue; real-time quantitative PCR detection to detect mRNA expression of osteoclast differentiation factor at the pressure side of periodontal tissue and time distribution characteristics.
RESULTS AND CONCLUSION: Compared with the control group, the number of positive osteoclasts and mRNA expression of osteoclast differentiation factor at the pressure side of the alveolar bone tissue were increased with orthodontic time, reached the peaked at 7 days and then gradually decreased. The number of positive osteoclasts 
and mRNA expression of osteoclast differentiation factor at the pressure side of the alveolar bone tissue were significantly higher in the Damon III group than the other three groups at 7 days after orthodontic treatment (P < 0.05). These findings indicate that, during the bone remodeling, the number of positive osteoclasts changed in accordance with the mRNA expression of osteoclast differentiation factor, and at 7 days, the number of positive osteoclasts and mRNA expression of osteoclast differentiation factor were highest in the Damon III group.


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

Key words: Orthodontics, Osteoclasts, Periodontium

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