Martins Gislaine Cristine, Reis Alessandra, Loguercio Alessandro D, Zander-Grande Christiana, Meier Marcia, Mazur Rui Fernando, Gomes Osnara Maria Mongruel
J Adhes Dent. 2015 Dec;17(6):513-9. doi: 10.3290/j.jad.a35254.
To evaluate the radiopacity, bond strength, and micromorphology of experimental filled dental adhesives.
Five experimental filled dental adhesives with different concentrations of radiopaque barium-borosilicate glass (wt%) [0 (R0), 30 (R30), 40 (R40), 50 (R50), and 60 (R60)] and the commercial adhesive Adper Single Bond 2 were used in this study. Specimens were prepared by dispensing the uncured resin into a mold (5.0 mm x 1.0 mm). Digital radiographs (n = 5) of both 1-mm-thick adhesive specimens and tooth were taken with a CCD sensor. The gray levels of enamel, dentin, and adhesive systems were measured by histogram analysis and compared. Adhesives were applied to flat dentin surfaces of third molars (n = 7). Resin composite buildups were constructed and sectioned to obtain resin-dentin bonded sticks to test immediately or after 6 months of water storage. Three specimens for each tooth were qualitatively analyzed using scanning electron microscopy. Data on bond strength and radiopacity were evaluated by two-way and one-way ANOVA, respectively, and Tukey's test (α = 0.05).
All experimental filled dental adhesives showed radiopacity similar to enamel (p > 0.05) and most yielded significant reductions of bond strength over time. However, the R30 produced a radiopaque material without jeopardizing the bonding of the material to the dentin substrate.
The addition of 30% barium-borosilicate oxide produced radiopaque adhesives without jeopardizing the bonding to the dental substrate.
评估实验性填充牙科胶粘剂的射线不透性、粘结强度和微观形态。
本研究使用了五种不同浓度的含射线不透性钡硼硅酸盐玻璃（重量百分比）[0（R0）、30（R30）、40（R40）、50（R50）和60（R60）]的实验性填充牙科胶粘剂以及市售胶粘剂Adper Single Bond 2。通过将未固化的树脂倒入模具（5.0毫米×1.0毫米）中来制备标本。使用CCD传感器对1毫米厚的胶粘剂标本和牙齿进行数字射线照相（n = 5）。通过直方图分析测量并比较牙釉质、牙本质和胶粘剂系统的灰度级。将胶粘剂应用于第三磨牙的平坦牙本质表面（n = 7）。构建树脂复合材料堆积并切片以获得树脂-牙本质粘结棒，以便立即测试或在储存6个月后测试。使用扫描电子显微镜对每颗牙齿的三个标本进行定性分析。分别通过双向和单向方差分析以及Tukey检验（α = 0.05）评估粘结强度和射线不透性数据。
所有实验性填充牙科胶粘剂均显示出与牙釉质相似的射线不透性（p > 0.05），并且大多数胶粘剂的粘结强度随时间显著降低。然而，R30产生了一种射线不透性材料，而不会损害该材料与牙本质基质的粘结。
添加30%的钡硼硅酸盐氧化物可产生射线不透性胶粘剂，而不会损害与牙科基质的粘结。
