Ibrahim Dayang Fadzlina Abang, Hasmun Noren Nor, Liew Yih Miin, Venkiteswaran Annapurny
Centre of Paediatric Dentistry and Orthodontic Studies, Faculty of Dentistry, Universiti Teknologi MARA (UiTM) Campus Sungai Buloh, Sungai Buloh 47000, Malaysia.
Department of Oral Sciences, Faculty of Dentistry, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand.
Children (Basel). 2023 Jun 30;10(7):1148. doi: 10.3390/children10071148.
Resin infiltration (RI) is used to mask enamel opacities. There are three recommended etching cycles. However, anecdotal evidence suggests that favorable esthetics outcomes can be obtained by increasing the etching cycles. This study aimed to evaluate the effects of repeated etching cycles during RI application on esthetic changes and surface roughness of demineralized enamel at multiple treatment stages. Artificial demineralization was prepared on the buccal surface of ninety sound extracted premolars. The teeth were divided into nine groups (n = 10); with each consecutive group having one additional etching cycle up to nine etching cycles. Resin infiltrant was performed twice, first for 3 min (Resin 1) and again for 1 min (Resin 2). Surface roughness and esthetic changes were assessed using a profilometer (Ambios XP-200) and Minolta spectrophotometer, respectively, at baseline (sound enamel), etching, resin 1, resin 2, 7 days, and 28 days post resin applications. Data were analyzed with two-way ANOVA ( < 0.05). There was a significant interaction between the different stages and various groups of etching cycles on surface roughness, F(48, 126) = 3.48, < 0.001. There was a significant interaction between the different stages and various groups of etching cycles on color changes, F(4, 126) = 1.177, = 0.045. The surface roughness of demineralized enamel infiltrated with RI was less than that of sound enamel (baseline). There is a significant difference in color changes between resin 1 and resin 2 ( < 0.05). After five etching cycles, RI improved the esthetic of the color of teeth similar to the baseline. Surface roughness and color changes remained constant for 28 days. RI can be considered an effective and predictable treatment option for the restoration of early enamel lesions owing to its better surface characteristics and reliable masking effects. The color stability and surface roughness stay unaltered for up to 28 days.
树脂渗透（RI）用于掩盖牙釉质不透明。推荐了三种蚀刻周期。然而，轶事证据表明，增加蚀刻周期可获得良好的美学效果。本研究旨在评估在RI应用过程中重复蚀刻周期对多个治疗阶段脱矿牙釉质美学变化和表面粗糙度的影响。在90颗完好拔除的前磨牙颊面制备人工脱矿。将牙齿分为九组（n = 10）；每组连续增加一个蚀刻周期，直至九个蚀刻周期。树脂渗透剂进行两次，第一次3分钟（树脂1），第二次1分钟（树脂2）。分别在基线（完好牙釉质）、蚀刻、树脂1、树脂2、树脂应用后7天和28天，使用轮廓仪（Ambios XP - 200）和Minolta分光光度计评估表面粗糙度和美学变化。数据采用双向方差分析（< 0.05）。不同阶段和不同蚀刻周期组之间在表面粗糙度上存在显著交互作用，F(48, 126) = 3.48，< 0.001。不同阶段和不同蚀刻周期组之间在颜色变化上存在显著交互作用，F(4, 126) = 1.177，= 0.045。用RI渗透的脱矿牙釉质表面粗糙度低于完好牙釉质（基线）。树脂1和树脂2之间在颜色变化上存在显著差异（< 0.05）。经过五个蚀刻周期后，RI改善了牙齿颜色的美观度，与基线相似。表面粗糙度和颜色变化在28天内保持恒定。由于其更好的表面特性和可靠的掩盖效果，RI可被认为是修复早期牙釉质病变的一种有效且可预测的治疗选择。颜色稳定性和表面粗糙度在长达28天内保持不变。
