Counts A L, Hopkins A R
Orthodontic Department, US Navy Reserve, Branch Dental Clinic Naval Base, Norfolk, VA 23511, USA.
J Prosthodont. 1995 Mar;4(1):3. doi: 10.1111/j.1532-849x.1995.tb00306.x.
Ceramic orthodontic brackets were developed for the purpose of esthetics and increased tooth-to-bracket strength. An alternative method of preparing a rest seat on the lingual surface of lower canine teeth without violating the enamel integrity is offered. Ceramic orthodontic brackets were bonded to the lingual surfaces of mandibular canines and shaped into rest seats using diamond burs. Because the rest seats are not cut into the tooth structure, sensitivity and potential caries complications are avoided. The bracket is adhered to the tooth surface with a dimethacrylate bonding material. The brackets are bonded with either a no-mix or a two-part adhesive system. The strength of this bond will easily support the forces of a partial denture framework. The advantage over metal acid-etched retained rests is that this method avoids a time-consuming laboratory step. The greatest advantage over the use of composite resins that are shaped into rest seats is the much higher bond strength. After ceramic brackets were bonded to the lingual surfaces of mandibular canines and shaped into rest seats, an impression was obtained for the fabrication of a conventional partial denture framework.
陶瓷正畸托槽是为了美观和提高牙齿与托槽的强度而研发的。本文提供了一种在下颌尖牙舌面制备支托窝的替代方法，该方法不会破坏釉质完整性。将陶瓷正畸托槽粘结在下颌尖牙的舌面，并用金刚石车针将其修整成支托窝。由于支托窝没有切入牙体结构，避免了敏感和潜在的龋齿并发症。托槽用双甲基丙烯酸酯粘结材料粘结在牙面上。托槽通过单组份或双组份粘结系统进行粘结。这种粘结强度能够轻松支撑局部义齿支架的力量。与金属酸蚀固位支托相比，该方法的优势在于避免了耗时的实验室步骤。与使用复合树脂制成支托窝相比，最大的优势是粘结强度高得多。将陶瓷托槽粘结在下颌尖牙舌面并修整成支托窝后，制取印模以制作传统的局部义齿支架。
