| 含不同浓度氟化钠的酸蚀液对托槽抗剪粘接强度的影响 |
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| 引用本文： | 马嘉,张扬,洪玉华. 含不同浓度氟化钠的酸蚀液对托槽抗剪粘接强度的影响[J]. 华西口腔医学杂志, 2005, 23(5): 397-399 |
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| 作者姓名： | 马嘉 张扬 洪玉华 |
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| 作者单位： | 中国医科大学附属口腔医院,正畸科,辽宁,沈阳,110002;泰山齿科,正畸科,辽宁,沈阳,110032 |
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| 摘 要： | 医科大学附属口腔医院 正畸科,辽宁 沈阳110002;2.泰山齿科 正畸科,辽宁 沈阳110032)[摘要] 目的 在确保托槽粘接强度的条件下,探讨35%磷酸酸蚀液中添加氟化钠的最佳浓度。方法 64颗离体牙随机分成A、B、C组和对照组,分别采用添加4种不同浓度氟化钠(1·23%、2%、3%和0%)的酸蚀液进行酸蚀并常规粘接托槽,于1周、4周、12周和24周分别从每组样本中随机抽取4颗牙进行抗剪粘接强度测试,并观测托槽脱落后界面粘接剂残留情况,记录粘接材料残留指数(ARI)。结果 A、B、C组和对照组的抗剪粘接强度在4个观测时间点进行组内比较均无统计学差异,组间比较则有统计学差异,C组低于其他3组(P<0·05)。4组间ARI分值无统计学意义。结论 35%磷酸酸蚀液中添加不高于2%的氟化钠,与单纯应用35%磷酸的粘接效果相似;当氟化钠浓度高于3%后,托槽的抗剪粘接强度下降。
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| 关 键 词： | 氟化钠 酸蚀 抗剪粘接强度 |
| 文章编号： | 1000-1182(2005)05-0397-03 |
| 收稿时间： | 2004-12-09 |
| 修稿时间： | 2005-03-12 |
Effects on the Shear Bond Strength of Orthodontic Brackets with Different Concentration of Fluorided Etching Fluid |
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| MA Jia,ZHANG Yang,HONG Yu-hua. Effects on the Shear Bond Strength of Orthodontic Brackets with Different Concentration of Fluorided Etching Fluid[J]. West China journal of stomatology, 2005, 23(5): 397-399 |
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| Authors: | MA Jia ZHANG Yang HONG Yu-hua |
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| Affiliation: | 1.Dept.ofOrthodontics,StomatologicalHospital ofChina Medical University,Sheny-ang110002,China; 2.Dept.ofOrthodontics,Tai Shan Dentistry,Shenyang110032,China |
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| Abstract: | Objective This study was to find out the most suitable concentration of added NaF to enough bonding strength of brackets.Methods Sixty_four teeth were randomly divided into A,B,C and the control group.NaF of four different concentrations(1.23%,2%,3% and 0%) was added into 35% phosphoric acid.The four group teeth were etched with four kinds of fluoride etching fluid respectively and were bonded with brackets.Four specimens in each group were selected by turns after 1,4,12 and 24 weeks of bonding.The shear bond strength of the teeth were tested,and the adhesive residual index(ARI) of bonding interface were recorded.Results The shear bond strength at four test time in each group was no significant(P>0.05).There was statistical difference of the shear bond strength between four groups(P<0.05),and group C was lower than the other groups.The ARI was no statistical difference between four groups.Conclusion The effects of etching and bonding had no significant changes when the concentration of added NaF was no more than 2%.The shear bond strength decreased while the concentration of NaF was higher than 3%. |
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| Keywords: | fluoride etching shear bond strength |
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