Fox N A, McCabe J F
Department of Child Dental Health, Newcastle Dental School, Newcastle Upon Tyne.
Br J Orthod. 1992 Nov;19(4):305-9. doi: 10.1179/bjo.19.4.305.
The use of ceramic brackets in fixed appliance orthodontics has highlighted several problems, amongst which are the problems of enamel damage and possible trauma to the patient during debonding. A ceramic bracket has recently been developed with a polycarbonate laminated base (Ceramaflex) claiming to make debond much easier, although there are no independent data to substantiate this claim. The in-vitro bond strength of these ceramic brackets to enamel was tested and compared with metal standard Edgewise brackets. The bond produced with the Ceramaflex bracket was similar in magnitude, but less reliable. No fracture of the bracket or damage to enamel was seen during debonding. Debonding of these brackets was easy to carry out, but it is possible that more debonds may occur during treatment than with the use of metal brackets.
在固定矫治器正畸治疗中使用陶瓷托槽凸显了几个问题,其中包括釉质损伤问题以及在去除托槽时对患者可能造成的创伤。最近研发出了一种带有聚碳酸酯层压基底的陶瓷托槽(Ceramaflex),宣称其能使去除托槽变得容易得多,不过尚无独立数据证实这一说法。对这些陶瓷托槽与釉质的体外粘结强度进行了测试,并与金属标准方丝弓托槽作比较。使用Ceramaflex托槽产生的粘结强度在数值上相似,但可靠性较低。在去除托槽过程中未观察到托槽断裂或釉质损伤。这些托槽的去除操作简便,但与使用金属托槽相比,在治疗过程中可能会出现更多的托槽脱落情况。