Hicks M J, Flaitz C M
Department of Oral Diagnostic Sciences, University of Texas Health Science Center at Houston, Dental Branch 77225-0068.
Am J Dent. 1992 Dec;5(6):329-34.
Caries-like lesion formation around Class V preparations restored with fluoride-releasing sealant, glass ionomer and conventional sealant materials was evaluated with polarized light microscopy following lesion initiation and progression periods. Significant differences (P < 0.05) were found among the three treatment groups for mean surface lesion depth following lesion initiation and progression and between the conventional sealant and fluoride-containing material groups for incremental increase in surface lesion depth following lesion progression. Surface lesion depths were significantly reduced in both the fluoride-releasing sealant and glass ionomer groups when compared with the conventional sealant group. The glass ionomer material provided the greatest degree of caries protection at the enamel-restorative interface and had the least number of wall lesions (7.5%); in contrast, the conventional sealant group had the greatest number of wall lesions (17.5%). The incorporation of fluoride from a dental material into adjacent tooth structure may provide enhanced resistance to caries initiation and progression.
在病损起始期和进展期后，采用偏光显微镜评估用释氟封闭剂、玻璃离子体和传统封闭剂材料修复的Ⅴ类洞预备体周围类龋损的形成情况。在病损起始期和进展期后，三个治疗组的平均表面病损深度存在显著差异（P<0.05），在病损进展期后，传统封闭剂组和含氟材料组之间表面病损深度的增量增加也存在显著差异。与传统封闭剂组相比，释氟封闭剂组和玻璃离子体组的表面病损深度均显著降低。玻璃离子体材料在釉质-修复体界面提供了最大程度的防龋保护，壁病损数量最少（7.5%）；相比之下，传统封闭剂组的壁病损数量最多（17.5%）。牙科材料中的氟融入相邻牙体结构可能会增强对龋病起始和进展的抵抗力。
