中国组织工程研究

中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (18): 2872-2876.doi: 10.3969/j.issn.2095-4344.0862

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

液体抛光剂对托槽黏结强度影响的体内外实验

林宝山，李 婷   

  1. 南方医科大学深圳口腔医院，广东省深圳市 518001
  • 收稿日期:2018-04-06 出版日期:2018-06-28 发布日期:2018-06-28
  • 通讯作者: 李婷，主治医师，南方医科大学深圳口腔医院，广东省深圳市 518001
  • 作者简介:林宝山，男，1981年生，广东省惠州市人，汉族，南方医科大学深圳口腔医院(广东省深圳牙科医疗中心)口腔正畸科，主治医师，主要从事口腔医学方面研究。
  • 基金资助:

    广东省医学科研基金(B2014058)

An in vivo and in vitro study on the effect of tooth liquid polish sealant on the bond strength of orthodontic brackets

Lin Bao-shan, Li Ting   

  1. Shenzhen Stomatological Hospital, Southern Medical University, Shenzhen 518001, Guangdong Province, China
  • Received:2018-04-06 Online:2018-06-28 Published:2018-06-28
  • Contact: Li Ting, Attending physician, Shenzhen Stomatological Hospital, Southern Medical University, Shenzhen 518001, Guangdong Province, China
  • About author:Lin Bao-shan, Attending physician, Shenzhen Stomatological Hospital, Southern Medical University, Shenzhen 518001, Guangdong Province, China
  • Supported by:

    the Medical Research Foundation of Guangdong Province, No. B2014058

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摘要：

文章快速阅读：

 

文题释义：
BISCOVER LV液体抛光剂：是一种能完全消除氧化阻聚层形成的丙烯酸盐类光固化材料，其作为表面封闭剂能使牙釉质表面形成一光滑表层，减少托槽周围菌斑的附着，可在临床上由医生涂布于患者牙面，对部分依从性差患者的牙面防龋具有较好的疗效。
黏结剂残余指数：是衡量口腔正畸托槽黏结效果的一个指标，也作为研究托槽黏结强度的参考。当黏结剂残余指数值较高时，表示牙面残留的黏结剂越多，黏结剂和牙面的黏结力大，托槽去除时黏结剂的破坏部位集中于托槽底板与黏结剂之间，在去除残余粘结剂时容易对牙面造成损伤；当黏结剂残余指数值较低时，表示托槽去除时黏结剂的破坏部位集中于牙面与黏结剂之间；介于两者之间则表示黏结破坏位于黏结剂的内部。
 
 
背景：BISCOVER LV液体抛光剂是一种低黏度的光固化树脂类制剂，可由医生直接涂布于患者牙釉质表面，常用于口内外树脂抛光，也用于托槽粘接前后防釉质脱矿。
目的：观察在黏结托槽前使用BISCOVER LV液体抛光剂预防牙釉质脱矿，对托槽脱落率及托槽黏结抗剪切强度的影响。
方法：①体内试验：选择30例接受正畸治疗的青少年患者，将每例患者左侧上下牙列经BISCOVER LV液体抛光剂处理牙面，然后使用Transbond XT光固化树脂黏结剂进行托槽粘接(BISCOVER LV处理组)；同时在每例患者右侧上下牙列直接使用Transbond XT光固化树脂黏结剂进行托槽粘接(BISCOVER LV非处理组)，1个月后观察患者两侧牙齿托槽脱落情况；②体外实验：收集临床因正畸需要而拔除的前磨牙60颗，随机分成2组，BISCOVER LV处理组经BISCOVER LV液体抛光剂处理牙面，然后使用Transbond XT光固化树脂黏结剂进行托槽粘接；BISCOVER LV非处理组直接使用Transbond XT光固化树脂黏结剂进行托槽粘接。将两组黏结试件浸泡于人工唾液中，1个月后进行抗剪切强度测试，同时记录黏结剂残留指数ARI。

结果与结论：①体内试验：BISCOVER LV处理组与BISCOVER LV非处理组牙齿托槽脱落率比较差异无显著性意义(11.43%，9.64%，P > 0.05)；②体外实验：BISCOVER LV处理组与BISCOVER LV非处理组抗剪切强度比较差异无显著性意义[(9.24±2.06)，(9.59±2.24)MPa，P > 0.05]；两组离体牙托槽脱落后ARI记分比较差异无显著性意义(P > 0.05)；③结果表明：在黏结托槽前使用BISCOVER LV液体抛光剂对托槽黏结强度无影响。

ORCID: 0000-0003-4076-0162(林宝山) 

关键词: 釉质脱矿, 再矿化, 液体抛光剂, 脱落率, 抗剪切强度, 黏结剂残留指数, 正畸治疗, 生物材料

Abstract:

BACKGROUND: BISCOVER LV is a low-viscosity, ligh-cured resin formulation that can be directly coated on the tooth enamel surface for resin polishing inside and outside the mouth or bracket bonding for enamel demineralization.

OBJECTIVE: To evaluate the effect of tooth liquid polish sealant on the shear bond strength of orthodontic brackets and the failure rate of bracket bonding.
METHODS: (1) In vivo test: 30 teenager patients under orthodontic treatment were randomly selected. BISCOVER LV was used to deal with the upper and lower dentitions on the left side, and then the brackets were bonded by a light-cured resin adhesive (Transbond XT). The upper and lower dentitions on the right side were directly bonded with the brackets by Transbond XT. After 1 month, the failure rate of bracket bonding was detected in each patient. (2) In vitro test: 60 extracted orthodontic teeth were selected and randomized into two groups: BISCOVER LV group and non-BISCOVER LV group. The following procedures in the in vitro test were the same as those in the in vivo test. Two groups of specimens were thereafter soaked in the artificial saliva, the shear bond strength of the brackets was tested, and then the adhesive remnant index was recorded.
RESULTS AND CONCLUSION: (1) In the in vivo test, there was no significant difference in the failure rate of bracket bonding between two clinical groups (11.43% vs. 9.64%; P > 0.05). (2) In the in vitro test, there was no significant difference in the shear bond strength of the brackets[(9.24±2.06) MPa vs. (9.59±2.24) MPa; P > 0.05] as well as in the adhesive remnant index record between the two groups. Therefore, we can make the conclusion that the use of tooth liquid polish sealant for prevention of enamel demineralization has no effect on the bond strength of brackets. 

Key words: Dentin-Bonding Agents, Shear Strength, Tissue Engineering

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