Oesterle L J, Shellhart W C, Belanger G K
Department of Growth and Development, School of Dentistry, University of Colorado Health Sciences Center, Denver, CO, USA.
Am J Orthod Dentofacial Orthop. 1998 Nov;114(5):514-9. doi: 10.1016/s0889-5406(98)70171-4.
Bovine enamel is commonly used in enamel bonding studies, therefore, a familiarity with some aspects of bovine enamel bonding are important in order to evaluate the studies. Bovine enamel has the advantages of easy attainability and similar microstructure to human enamel. In this study the strength of the enamel bond using an orthodontic adhesive was compared between deciduous bovine, permanent bovine, and human enamel, as well as, the effect on bond strength of multiple rebonding to bovine enamel. This study found that the bond strength to bovine enamel was 21% to 44% weaker than to human enamel, and the bond strength to deciduous bovine enamel was significantly greater than to permanent bovine enamel. Either all deciduous or all permanent bovine incisors should be used, or permanent and deciduous bovine incisors evenly distributed in sample groups. Bovine enamel was rebonded five times without significantly affecting bond strength, thus, bovine enamel can be reused in bonding studies without significantly affecting the results.
牛牙釉质常用于牙釉质粘结研究，因此，熟悉牛牙釉质粘结的某些方面对于评估这些研究很重要。牛牙釉质具有易于获取且微观结构与人类牙釉质相似的优点。在本研究中，比较了正畸粘合剂与乳牙牛牙釉质、恒牙牛牙釉质和人类牙釉质之间的牙釉质粘结强度，以及多次重新粘结对牛牙釉质粘结强度的影响。本研究发现，与人类牙釉质相比，与牛牙釉质的粘结强度弱21%至44%，与乳牙牛牙釉质的粘结强度明显高于恒牙牛牙釉质。应使用所有乳牙或所有恒牙牛切牙，或将恒牙和乳牙牛切牙均匀分布在样本组中。牛牙釉质重新粘结五次后对粘结强度没有显著影响，因此，牛牙釉质可在粘结研究中重复使用而不会显著影响结果。
