Smales R J, Gao W, Ho F T
Department of Conservative Dentistry, Prince Philip Dental Hospital, Hong Kong.
J Clin Pediatr Dent. 1997 Summer;21(4):321-3.
Four conventional glass-ionomer cements specifically developed for use with the atraumatic restorative treatment (ART) technique were compared with a resin-based sealant for marginal and surface dye penetration, material voids, and completeness of enamel fissure penetration. Thirty sound permanent mandibular molar teeth were randomly divided into five groups. After delayed placement of the glass-ionomer cement sealants using standardized finger pressure, and conventional placement of the resin-based sealant using a dental probe, the teeth were first thermocycled then the crowns immersed in methylene blue dye before being sectioned. There were no statistically significant differences found between any of the five materials, apart from less marginal dye leakage being present for the resin-based sealant than for one of the glass-ionomer cements. The cements, however, showed better fissure penetration than did the sealant. Despite the delayed placement and higher viscosity, all of the glass-ionomer cements showed satisfactory penetration of the enamel fissures and minimal marginal and surface dye penetration, and material voids, when placed using firm finger pressure. The cements could prove to be useful in the dental treatment of apprehensive children.
将四种专门为非创伤性修复治疗（ART）技术开发的传统玻璃离子水门汀与一种树脂基封闭剂进行比较，观察其边缘和表面染料渗透、材料孔隙以及釉质裂隙渗透的完整性。30颗健康的恒牙下颌磨牙被随机分为五组。在使用标准化手指压力延迟放置玻璃离子水门汀封闭剂以及使用牙科探针常规放置树脂基封闭剂后，先对牙齿进行热循环，然后将牙冠浸入亚甲蓝染料中，之后进行切片。除了树脂基封闭剂的边缘染料渗漏比其中一种玻璃离子水门汀少之外，五种材料之间未发现统计学上的显著差异。然而，水门汀显示出比封闭剂更好的裂隙渗透。尽管放置延迟且粘度较高，但当使用稳固的手指压力放置时，所有玻璃离子水门汀都显示出对釉质裂隙的良好渗透以及最小的边缘和表面染料渗透和材料孔隙。这些水门汀可能在治疗焦虑儿童的牙科治疗中有用。
