Cook N B, Feitosa S A, Patel A, Alfawaz Y, Eckert G J, Bottino M C
Oper Dent. 2015 May-Jun;40(3):304-12. doi: 10.2341/14-030-L. Epub 2014 Dec 23.
This study investigated the effect of nonrinse conditioners (ie, Ketac Nano Primer [KNP] and GC Self Conditioner [SC]) used as substrate pretreatment and their respective paste-paste resin-modified glass-ionomer cement (RMGIC) (ie, Ketac Nano [KN] and Fuji Filling LC [FF]) on microtensile bond strength to dentin and marginal sealing when compared with traditional RMGIC (ie, Photac Fil [PF] and Fuji II LC [FII]) used in association with polyacrylic acid (ie, Ketac Cavity Conditioner [KC] and GC Cavity Conditioner [CC]). A total of 192 extracted human molars were allocated into eight groups: KNP-KN, KC-KN, KNP-PF, KC-PF, SC-FF, CC-FF, SC-FII, and CC-FII. For microtensile bond strength, the teeth were sectioned to expose occlusal dentin and restored according to the group. After 24 hours the teeth were cut to yield nine beams per tooth (±0.8 mm(2)). Testing was done using a universal testing machine followed by failure mode classification. For microleakage testing, standardized cavity preparations were made on the buccal cementoenamel junction and restored according to the group. The teeth were thermocycled (500 cycles, 8°C to 48°C), sealed, immersed in methylene blue for 24 hours, and then assessed for microleakage using a stereomicroscope. Microtensile bond strengths in megapascals (mean±SE) were KNP-KN: 14.9 ± 1.6, KC-KN: 17.2 ± 1.5, KNP-PF: 31.2 ± 1.6, KC-PF: 26.2 ± 1.2, SC-FF: 23.6 ± 1.5, SC-FII: 31.2 ± 1.5, and CC-FII: 21.9 ± 1.5. Cervical margins showed more microleakage compared with occlusal margins. Overall, the use of nonrinse conditioners in association with traditional RMGICs demonstrated superior microtensile bond strengths to dentin when compared with the paste-paste RMGICs. Meanwhile, the association between polyacrylic acid (CC) and a traditional RMGIC (FII) led to the least microleakage for cervical locations when compared with all other groups.
本研究调查了用作基质预处理的免冲洗调理剂（即Ketac Nano Primer [KNP]和GC Self Conditioner [SC]）及其各自的糊剂-糊剂树脂改性玻璃离子水门汀（RMGIC）（即Ketac Nano [KN]和Fuji Filling LC [FF]）与传统RMGIC（即Photac Fil [PF]和Fuji II LC [FII]）联合使用聚丙烯酸（即Ketac Cavity Conditioner [KC]和GC Cavity Conditioner [CC]）时，对牙本质微拉伸粘结强度和边缘密封性的影响。总共192颗拔除的人类磨牙被分为八组：KNP-KN、KC-KN、KNP-PF、KC-PF、SC-FF、CC-FF、SC-FII和CC-FII。对于微拉伸粘结强度，将牙齿切片以暴露咬合面牙本质，并根据分组进行修复。24小时后，将牙齿切割成每颗牙齿九条梁（±0.8平方毫米）。使用万能试验机进行测试，然后进行失效模式分类。对于微渗漏测试，在颊侧牙骨质釉质界制备标准化洞型，并根据分组进行修复。将牙齿进行热循环（500次循环，8°C至48°C），密封，浸入亚甲蓝中24小时，然后使用体视显微镜评估微渗漏情况。以兆帕为单位的微拉伸粘结强度（平均值±标准误）分别为：KNP-KN：14.9±1.6、KC-KN：17.2±1.5、KNP-PF：31.2±1.6、KC-PF：26.2±1.2、SC-FF：23.6±1.5、SC-FII：31.2±1.5、CC-FII：21.9±1.5。与咬合边缘相比，颈部边缘显示出更多的微渗漏。总体而言，与糊剂-糊剂RMGIC相比，免冲洗调理剂与传统RMGIC联合使用时对牙本质的微拉伸粘结强度更高。同时，与所有其他组相比，聚丙烯酸（CC）与传统RMGIC（FII）联合使用时，颈部位置的微渗漏最少。
