Komori Akira, Kojima Iori
Department of Orthodontics, Nippon Dental University, Tokyo, Japan.
Am J Orthod Dentofacial Orthop. 2003 Jun;123(6):649-52. doi: 10.1016/s0889-5406(03)00163-x.
A new 2-paste resin-reinforced glass ionomer cement, Fuji Ortho Band Paste Pak (GC Corporation, Tokyo, Japan), for the placement of orthodontic bands, has been developed for easier handling. The aim of this study was to compare the fluoride release and uptake characteristics of this cement with that of 3 others commonly used to cement orthodontic bands: a conventional resin-reinforced glass ionomer cement, a polyacid-modified composite resin, and a conventional glass ionomer cement. Fluoride release was measured during a 28-day period. After the measurement on day 28, experimental samples were exposed to 1000 ppm sodium fluoride solution for 5 minutes, and fluoride release was then measured for 7 days. Initially, the new 2-paste resin-reinforced glass ionomer cement released the greatest amount of fluoride; the polyacid-modified composite resin released the least initially, and it continued to show the lowest values throughout the study. The fluoride uptake and release values of the new 2-paste resin-reinforced glass ionomer cement were statistically significantly higher than those of the conventional resin-reinforced glass ionomer cement or the conventional glass ionomer cement. The new 2-paste resin-reinforced glass ionomer cement might be a good alternative to conventional products for cementing orthodontic bands.
一种用于正畸带环粘结的新型双糊剂型树脂增强玻璃离子水门汀——Fuji Ortho Band Paste Pak（日本东京GC公司）已被研发出来，以便于操作。本研究的目的是比较这种水门汀与其他3种常用于粘结正畸带环的水门汀的氟释放和吸收特性：一种传统的树脂增强玻璃离子水门汀、一种聚酸改性复合树脂和一种传统的玻璃离子水门汀。在28天的时间内测量氟释放量。在第28天测量后，将实验样品暴露于1000 ppm的氟化钠溶液中5分钟，然后再测量7天的氟释放量。最初，新型双糊剂型树脂增强玻璃离子水门汀释放的氟量最大；聚酸改性复合树脂最初释放的氟量最少，并且在整个研究过程中一直保持最低值。新型双糊剂型树脂增强玻璃离子水门汀的氟吸收和释放值在统计学上显著高于传统的树脂增强玻璃离子水门汀或传统的玻璃离子水门汀。新型双糊剂型树脂增强玻璃离子水门汀可能是粘结正畸带环的传统产品的良好替代品。
