Ferreira Alieny-Cristina-Duarte, Batista Ana-Luzia-Araújo, Neto José-de Alencar-Fernandes, Simões Thamyres-Maria-Silva, da Silva Maria-das Graças-Barbosa, de Barros Daiane-Domingos, Catão Josefa-Simere-Dos Santos-Barros, de Oliveira Tiago-Almeida, Catão Maria-Helena-Chaves-de Vasconcelos
Master's Student of the Graduate Postgraduate Program in Dentistry, State University of Paraiba, R. Baraúnas, 351, Bodocongó, Campina Grande, PB, 58429-500, Brazil.
PhD student of the Postgraduate Program in Dentistry, State University of Paraiba, R. Baraúnas, 351, Bodocongó, Campina Grande, PB, 58429-500, Brazil.
J Clin Exp Dent. 2021 Oct 1;13(10):e969-e974. doi: 10.4317/jced.58440. eCollection 2021 Oct.
To evaluate the tooth enamel surface morphology after the action of 35% hydrogen peroxide with and without LED activation.
70 bovine incisors with an enamel surface of 4x4x3 mm were used, prepared for reading superficial microhardness and roughness. Specimens were randomly distributed and divided into 7 experimental groups (n = 10); G1 = artificial saliva; G2 = 35% HP - 2 sessions (3x15´); G3 = Phosphoric Acid + 35% HP - 3 sessions (3x15´); G4 = 35% HP - 2 sessions (3x15´) + blue LED; G5 = 35% HP - 2 sessions (3x15´) + green LED; G6 = 35% HP - 2 sessions (3x20´) + violet LED; G7 = Violet LED - 2 sessions (3x20´). The results were analyzed by the Anova, Wilcoxon, Dunnett and Tukey tests (α = 0.05).
The G4 group showed a greater change in microhardness. Regarding roughness, the biggest mean difference between groups occurred in G2, G5 and G7. Optical microscopy showed a smooth enamel surface in groups G2, G5 and G7.
Changes in the enamel surface were observed in relation to microhardness, but without significant changes in roughness, where the LED (green and violet) resulted in a smooth surface. Tooth whitening, superficial morphology, light, photoradiatio.
评估有无LED激活作用下35%过氧化氢作用后牙釉质表面形态。
使用70颗牙釉质表面为4×4×3mm的牛切牙，制备用于读取表面显微硬度和粗糙度。标本随机分布并分为7个实验组（n = 10）；G1 = 人工唾液；G2 = 35%过氧化氢 - 2次疗程（3×15分钟）；G3 = 磷酸 + 35%过氧化氢 - 3次疗程（3×15分钟）；G4 = 35%过氧化氢 - 2次疗程（3×15分钟） + 蓝色LED；G5 = 35%过氧化氢 - 2次疗程（3×15分钟） + 绿色LED；G6 = 35%过氧化氢 - 2次疗程（3×20分钟） + 紫色LED；G7 = 紫色LED - 2次疗程（3×20分钟）。结果通过方差分析、威尔科克森检验、邓尼特检验和图基检验进行分析（α = 0.05）。
G4组在显微硬度方面显示出更大变化。关于粗糙度，组间最大平均差异出现在G2、G5和G7组。光学显微镜显示G2、G5和G7组牙釉质表面光滑。
观察到牙釉质表面在显微硬度方面有变化，但粗糙度无显著变化，其中LED（绿色和紫色）导致表面光滑。牙齿美白、表面形态、光、光辐射。
