Staribratova-Reister Kamelia, Jost-Brinkmann Paul-Georg
Department of Orthodontics and Dentofacial Orthopedics, Humboldt University of Berlin, University Hospital Charité, Berlin, Germany.
World J Orthod. 2004 Winter;5(4):312-6.
To investigate whether adding light-sensitive pigments (APC-Plus) has a significant effect on the times required for placing and debonding brackets compared with conventional APC brackets.
Eighty extracted human permanent central incisors were bonded with APC ceramic brackets and APC-Plus ceramic brackets by four clinicians, and the times required were recorded. After thermocycling, the brackets were debonded. Adhesive remnants were removed by the same clinicians using four different instruments. The times required were recorded, and the enamel surfaces were checked for morphologic changes via scanning electron microscope.
Two clinicians needed significantly more time for bonding of the APC-Plus brackets (P < .05). For debonding, no significant differences could be found between APC and APC-Plus brackets for any of the instruments. The diamond burs and the conventional carbide burs required significantly less time than the Radlanski burs. The air-powder abrasive system took the longest time. The diamond burs caused substantial destruction of the enamel surface, whereas the Radlanski bur and the air-powder abrasive system left the surface intact.
The time needed for placement of the brackets and removal of adhesive remnants was not affected by adding light-sensitive pigments. For debonding, Radlanski burs and conventional carbide burs can be used, while diamond burs should be avoided.
研究与传统的APC托槽相比，添加光敏颜料（APC-Plus）是否对放置和拆除托槽所需时间有显著影响。
由四位临床医生用APC陶瓷托槽和APC-Plus陶瓷托槽粘结80颗拔除的人类恒牙中切牙，并记录所需时间。热循环后，拆除托槽。由相同的临床医生使用四种不同器械去除粘结剂残留。记录所需时间，并通过扫描电子显微镜检查釉质表面的形态变化。
两位临床医生粘结APC-Plus托槽需要显著更多时间（P <.05）。对于拆除托槽，使用任何器械时，APC托槽和APC-Plus托槽之间均未发现显著差异。金刚砂车针和传统硬质合金车针所需时间明显少于Radlanski车针。空气喷砂研磨系统耗时最长。金刚砂车针导致釉质表面大量破坏，而Radlanski车针和空气喷砂研磨系统使表面保持完整。
添加光敏颜料不影响放置托槽和去除粘结剂残留所需时间。对于拆除托槽，可使用Radlanski车针和传统硬质合金车针，应避免使用金刚砂车针。
