Armed Forces Hospital, Dhahran, Saudi Arabia.
Angle Orthod. 2011 Sep;81(5):788-93. doi: 10.2319/101210-598.1. Epub 2011 May 13.
To evaluate the effect of prophylactic pastes containing active ingredients such as amorphous calcium phosphate (ACP), fluoride, or a combination of both on the enamel-bracket tensile bond strength.
Human molars were randomly divided into four groups (N = 40) according to the type of prophylactic pastes: control (no active ingredients), paste containing fluoride, paste containing ACP, and paste containing both fluoride and ACP. After prophylaxis, 20 brackets per group were bonded using an etch-and-rinse bonding technique (37% phosphoric acid and Ortho solo), and the other remaining 20 brackets were bonded using a self-etch bonding technique (Clearfil S(3)Bond). Samples were tested for tensile strength 24 hours after bonding using a universal testing machine. Data were analyzed using analysis of variance (ANOVA) and Student's t-test with significance level at .05.
The mean tensile bond strength varied between 3.043 (ACP) and 9.232 (control) MPa. The etch-and-rinse bonding technique was significantly affected by pastes containing active ingredients (P < .001). The self-etching system was not significantly affected by different pastes (P > .05).
Cleaning enamel surfaces with prophylactic pastes that contain ACP and/or fluoride, prior to orthodontic bonding, resulted in a statistically significant decrease in the tensile bond strength of etch-and-rinse bonding technique.
评估含有活性成分（如无定形磷酸钙（ACP）、氟化物或两者的组合）的预防性糊剂对牙釉质托槽拉伸粘结强度的影响。
根据预防性糊剂的类型，将人类磨牙随机分为四组（N = 40）：对照组（无活性成分）、含氟糊剂组、含 ACP 糊剂组和含氟和 ACP 糊剂组。在预防措施后，每组用 20 个托槽采用酸蚀-冲洗粘结技术（37%磷酸酸和 Ortho solo）进行粘结，其余 20 个托槽采用自酸蚀粘结技术（Clearfil S(3)Bond）进行粘结。在粘结后 24 小时，使用万能试验机对样品进行拉伸强度测试。使用方差分析（ANOVA）和学生 t 检验对数据进行分析，显著性水平为.05。
平均拉伸粘结强度在 3.043（ACP）和 9.232（对照）MPa 之间变化。酸蚀-冲洗粘结技术明显受到含活性成分糊剂的影响（P <.001）。自酸蚀系统不受不同糊剂的显著影响（P >.05）。
在正畸粘结前，用含有 ACP 和/或氟化物的预防性糊剂清洁牙釉质表面，会导致酸蚀-冲洗粘结技术的拉伸粘结强度出现统计学上显著降低。
