空气喷砂和掺铒钇铝石榴石（Er:YAG）激光预备对复合材料与牙本质间剪切粘结强度的影响。
Effect of Air Abrasion and Erbium-Doped Yttrium Aluminum Garnet (Er: YAG) laser preparation on Shear Bond Strength of Composite to Dentin.
作者信息
Pahlavan Ayoub, Mehmanchi Mobin, Ranjbar Omrani Ladan, Chiniforush Nasim
机构信息
Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Dental Students' Research Center, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
出版信息
J Lasers Med Sci. 2013 Summer;4(3):127-30.
INTRODUCTION
The aim of this study was to assess shear bond strength of composite to dentin after air abrasion and laser treatment.
METHODS
40 human extracted molars divided into 4 groups (n=10) received the following treatments. Group 1: carbide bur, Group 2: air abrasion with aluminum oxide 50 μm, Group 3: irradiated with Erbium-Doped Yttrium Aluminum Garnet (Er: YAG) laser (150 mJ/20Hz), Group 4: irradiated with Er:YAG laser (150 mJ/20Hz)+ air. Specimens in all groups were chemically etched with phosphoric acid 37% and treated with bonding agent (single bond 3M). Then, composite build-up was performed by tygon tube. After storage in distilled water at 37°c for one week, all specimens were subjected to a shear bond strength test with universal testing machine. Data were analyzed with ANOVA and T-Test.
RESULTS
The mean and standard deviation of shear bond strength of the 4 groups were 20.8±6.76, 14.98±3.98, 11.43±4.36 and 14.95± 3.18 MPa, respectively.
CONCLUSION
Air abrasion after laser treatment improved the shear bond strength.
引言
本研究的目的是评估空气研磨和激光处理后复合材料与牙本质之间的剪切粘结强度。
方法
将40颗拔除的人磨牙分为4组（每组n = 10），并接受以下处理。第1组：用硬质合金车针；第2组：用50μm的氧化铝进行空气研磨；第3组：用掺铒钇铝石榴石（Er:YAG）激光照射（150 mJ/20Hz）；第4组：用Er:YAG激光照射（150 mJ/20Hz）+空气。所有组的标本均用37%的磷酸进行化学蚀刻，并用粘结剂（3M单键粘结剂）处理。然后，通过泰根管进行复合树脂充填。在37℃蒸馏水中储存一周后，所有标本均用万能试验机进行剪切粘结强度测试。数据采用方差分析和t检验进行分析。
结果
4组的剪切粘结强度平均值和标准差分别为20.8±6.76、14.98±3.98、11.43±4.36和14.95±3.18MPa。
结论
激光处理后进行空气研磨可提高剪切粘结强度。
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