Uşak Oral and Dental Health Center, 64000 Uşak, Turkey.
Department of Pediatric Dentistry, Alanya Alaaddin Keykubat University, 07400 Antalya, Turkey.
J Clin Pediatr Dent. 2024 Jan;48(1):191-197. doi: 10.22514/jocpd.2024.021. Epub 2024 Jan 3.
This study evaluated the effect of repeated etching cycles on resin infiltrant penetration. Enamel samples measuring 4 × 4 × 3 mm were obtained from the facial aspect of 50 extracted bovine teeth. Samples were immersed in a demineralization solution for 21 days to create artificial lesions and divided into five equal groups (n = 10). A 15% hydrochloric acid gel was administered to each group. The acid etching application time differed between groups: Group 1; 2 min, Group 2; 2 × 2 min, Group 3; 3 × 2 min, Group 4; 4 × 2 min, and Group 5; 5 × 2 min. Resin infiltration was visualized using a confocal laser scanning microscopy. The lesion, penetration and erosion depth (µm) were calculated, and data were statistically analyzed. The highest penetration depth (75.59 ± 9.42 µm) was seen in Group 5, followed by Groups 4, 3, 2 and 1. However, there were no statistically significant differences in the penetration depths between Groups 4 and 5 and between Groups 2, 3 and 4 ( > 0.05). In conclusion, a repeated etching cycle enhanced resin infiltrant penetration.
本研究评估了重复蚀刻循环对树脂渗透剂渗透的影响。从 50 颗拔除的牛牙的颊面获得了尺寸为 4×4×3mm 的牙釉质样本。样本被浸入脱矿溶液中 21 天以模拟人工损伤，并分为五组（n=10）。每个组都使用 15%盐酸凝胶。组间的酸蚀应用时间不同：组 1，2 分钟；组 2，2×2 分钟；组 3，3×2 分钟；组 4，4×2 分钟；组 5，5×2 分钟。使用共聚焦激光扫描显微镜可视化树脂渗透。计算了损伤、渗透和侵蚀深度（µm），并进行了统计分析。在组 5 中观察到最高的渗透深度（75.59±9.42µm），其次是组 4、3、2 和 1。然而，组 4 和 5 以及组 2、3 和 4 之间的渗透深度没有统计学差异（>0.05）。总之，重复的蚀刻循环增强了树脂渗透剂的渗透。
