陶瓷托槽的二极管激光脱粘
Diode laser debonding of ceramic brackets.
作者信息
Feldon Paul J, Murray Peter E, Burch James G, Meister Malcolm, Freedman Matthew A
机构信息
Private practice, Boca Raton, Fla.
Director of biological research, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, Fla.
出版信息
Am J Orthod Dentofacial Orthop. 2010 Oct;138(4):458-462. doi: 10.1016/j.ajodo.2008.11.028.
INTRODUCTION
Our objective was to investigate the effectiveness of debonding ceramic brackets with a diode laser.
METHODS
Two types of ceramic brackets (monocrystalline and polycrystalline) were bonded to bovine maxillary central incisors. The diode laser was applied to brackets in the experimental groups for 3 seconds. Shear bond strength and thermal effects on the pulp chamber were assessed at 2 laser energy levels: 2 and 5 W per square centimeter. Analysis of variance (ANOVA) was used to determine significant differences in shear bond strength values.
RESULTS
The diode laser was ineffective with polycrystalline brackets and effective with monocrystalline brackets in significantly (P <0.05) lowering the shear bond strength. There were no significant adhesive remnant index score differences between any groups tested.
CONCLUSIONS
Diode laser use significantly decreased the debonding force required for monocrystalline brackets without increasing the pulp chamber temperature significantly. Diode lasers did not significantly decrease the debonding force required for polycrystalline brackets.
引言
我们的目的是研究使用二极管激光去除陶瓷托槽的有效性。
方法
将两种类型的陶瓷托槽（单晶和多晶）粘结到牛上颌中切牙上。在实验组中，用二极管激光照射托槽3秒。在2个激光能量水平下评估剪切粘结强度和对牙髓腔的热效应：每平方厘米2瓦和5瓦。采用方差分析（ANOVA）来确定剪切粘结强度值的显著差异。
结果
二极管激光对多晶托槽无效，而对单晶托槽有效，能显著（P<0.05）降低剪切粘结强度。在任何测试组之间，粘结剂残留指数评分均无显著差异。
结论
使用二极管激光可显著降低单晶托槽所需的脱粘力，且不会显著提高牙髓腔温度。二极管激光并未显著降低多晶托槽所需的脱粘力。
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