Munksgaard E C, Andreasen F M
Kobenhavns Tandlaegehojskole, Institut for Odontologisk Materialelaere & Teknologi.
Tandlaegebladet. 1991 Jan;95(1):1-5.
Measurements of fracture strengths of incisors from sheep, previously fractured and then restored by reattaching the fragments with a light-curable resin, revealed that pretreatment of the fracture surfaces with dentin bonding agents such as Gluma, Tenure or Scotchbond2 and acid-etching of the enamel, gave values of about half the fracture strength of intact teeth. Measurements furthermore demonstrated that pretreatment by a combination of dentin bonding agents and acid-etching of the enamel yielded higher fracture strengths of the restored teeth, than that of teeth restored using only one of the two pretreatments. Fractured incisors, restored by Gluma-treatment of the dentin, acid-etching of the enamel and fragment-bonding with a light-curable resin, were further restored with porcelain veneers after preparation. Fracture strength measurements of such restored teeth revealed strength not significantly different from that of intact teeth. It is suggested that such restorations, could have a reasonably long period of function clinically.
对先前已折断然后用光固化树脂重新连接碎片修复的绵羊切牙的断裂强度进行测量，结果显示，用诸如Gluma、Tenure或Scotchbond2等牙本质粘结剂对断裂表面进行预处理以及对牙釉质进行酸蚀处理后，修复后牙齿的断裂强度约为完整牙齿的一半。此外，测量表明，与仅使用两种预处理方法之一修复的牙齿相比，联合使用牙本质粘结剂和牙釉质酸蚀处理进行预处理，修复后牙齿的断裂强度更高。通过对牙本质进行Gluma处理、对牙釉质进行酸蚀处理并用光固化树脂粘结碎片修复的折断切牙，在预备后进一步用瓷贴面修复。对这种修复后牙齿的断裂强度测量显示，其强度与完整牙齿的强度无显著差异。建议这种修复在临床上可以有相当长的功能期。
