Staudt Christine Bettina, Mavropoulos Anestis, Bouillaguet Serge, Kiliaridis Stavros, Krejci Ivo
Faculty of Medicine, Department of Dental Medicine, Division of Orthodontia, University of Geneva, 19 rue Barthélemy-Menn, CH-1205 Geneva, Switzerland.
Am J Orthod Dentofacial Orthop. 2005 Dec;128(6):749-54. doi: 10.1016/j.ajodo.2004.08.020.
Orthodontic brackets are routinely bonded with light-cured adhesives. Conventional halogen lights used in bonding have the disadvantage of a long curing time, and the available alternatives (laser and plasma lights) are expensive. Our aim was to investigate the minimum time necessary to bond brackets with a new, relatively low-priced, high-power halogen light.
Five groups of 15 deciduous bovine incisors were bonded with stainless steel brackets (Mini Diamond Twin, Ormco, Orange, Calif) by using different lamps and curing times. Three of the groups were bonded by using a high-power halogen light (Swiss Master Light, Electro Medical Systems, Nyon, Switzerland) for 2, 3, and 6 seconds, respectively. The fourth group, bonded with a fast halogen light (Optilux 501, Sybron Dental Specialties, Danbury, Conn) for 40 seconds, served as the positive control group. The fifth group, the comparison group, was bonded with a plasma light (Remecure, Remedent, Deurle, Belgium) for 4 seconds. After storage for 24 hours in the dark at 37 degrees C in water, shear bond strength was measured with a universal testing machine.
A curing time of 2 seconds with the high-power halogen light negatively affected the bond strength and the probability of bond survival. The adhesive remnant index scores were not significantly different among the groups. Most failures (> 60%) occurred at the bracket base/adhesive interface.
The high-power halogen light seems to be a cost-effective solution to reducing curing time. The recommended curing times to bond stainless steel brackets are 6 seconds and, with caution, even 3 seconds.
正畸托槽通常用光固化粘合剂粘结。粘结时使用的传统卤素灯存在固化时间长的缺点，而现有的替代方法（激光和等离子灯）价格昂贵。我们的目的是研究使用一种新型、价格相对较低的高功率卤素灯粘结托槽所需的最短时间。
将五组每组15颗乳牙牛切牙用不锈钢托槽（Mini Diamond Twin，奥美科公司，加利福尼亚州奥兰治）粘结，使用不同的灯和固化时间。其中三组分别使用高功率卤素灯（瑞士大师灯，电子医疗系统公司，瑞士尼翁）照射2秒、3秒和6秒。第四组使用快速卤素灯（Optilux 501，Sybron牙科专业产品公司，康涅狄格州丹伯里）照射40秒，作为阳性对照组。第五组为比较组，使用等离子灯（Remecure，Remedent公司，比利时德勒）照射4秒。在37℃水中黑暗中储存24小时后，用万能试验机测量剪切粘结强度。
高功率卤素灯照射2秒的固化时间对粘结强度和粘结存活概率有负面影响。各组的粘结剂残留指数评分无显著差异。大多数失败（>60%）发生在托槽底部/粘合剂界面。
高功率卤素灯似乎是减少固化时间的一种经济有效的解决方案。粘结不锈钢托槽推荐的固化时间为6秒，谨慎起见，甚至3秒也可以。
