van Waveren Hogervorst W L, Feilzer A J, Prahl-Andersen B
Academic Centre for Dentistry Amsterdam, The Netherlands.
Am J Orthod Dentofacial Orthop. 2000 Jan;117(1):20-6. doi: 10.1016/s0889-5406(00)70244-7.
The purpose of this study was to quantify the surface enamel loss that results when an air-abrasive technique is used and to compare the shear bond strength of different prebonding and bonding methods. Enamel loss was determined for 2 enamel-conditioning methods: acid etching with 37% phosphoric acid; and sandblasting with 50 microm aluminum oxide particles under different conditions. A profilometer was used to determine the surface enamel loss. Forty-two bovine teeth were divided into 7 groups (N = 6). The statistical comparison of the different groups was carried out by analysis of variance. The results showed that under certain conditions the enamel loss associated with sandblasting is equal to or smaller than that resulting from acid etching. In addition, the effectiveness of different prebonding and bonding techniques used in the bonding of orthodontic brackets was evaluated by means of shear bond strength measurements. For bonding, 1 resin and 1 glass ionomer cement were evaluated; for prebonding, a sandblaster, 2 different polyacrylic acids and phosphoric acid were tested. Seventy bovine teeth were divided into 7 groups (N = 10) and then stored in water for 24 hours. An Instrom testing machine was used to determine bond strengths, and the 7 groups were compared by means of analysis of variance. The significance of post hoc tests was predetermined at P <.003. The results showed that the bond strength of the sandblasted groups was significantly lower than that of the etching groups. This indicates that sandblasting is not an alternative for the acid-etching technique currently used in orthodontic practice.
本研究的目的是量化使用空气研磨技术时导致的釉质表面损失，并比较不同预粘结和粘结方法的剪切粘结强度。针对两种釉质处理方法测定釉质损失：用37%磷酸进行酸蚀；以及在不同条件下用50微米的氧化铝颗粒进行喷砂处理。使用轮廓仪测定釉质表面损失。将42颗牛牙分为7组（每组n = 6）。通过方差分析对不同组进行统计学比较。结果表明，在某些条件下，与喷砂处理相关的釉质损失等于或小于酸蚀导致的釉质损失。此外，通过测量剪切粘结强度评估了正畸托槽粘结中使用的不同预粘结和粘结技术的有效性。对于粘结，评估了1种树脂和1种玻璃离子水门汀；对于预粘结，测试了1台喷砂器、2种不同的聚丙烯酸和磷酸。将70颗牛牙分为7组（每组n = 10），然后在水中储存24小时。使用Instron测试机测定粘结强度，并通过方差分析对7组进行比较。事后检验的显著性预先设定为P <.003。结果表明，喷砂处理组的粘结强度显著低于酸蚀处理组。这表明喷砂处理并非正畸实践中目前使用的酸蚀技术的替代方法。
