TITLE:
SEM Comparison of Penetration in Artificial White Spots Lesion between an Infiltrant Resin and Two Adhesive Systems
AUTHORS:
Ximena Zamorano, Vladimir Valenzuela, Alejandro Daniels, Agustín Iturain
KEYWORDS:
Artificial White Spot Lesions, Resins Penetration, Etch and Rinse Adhesives, SEM
JOURNAL NAME:
Open Journal of Stomatology,
Vol.7 No.3,
March
13,
2017
ABSTRACT: White spot infiltration emerged as an alternative of non-invasive treatment to halt progression of the lesion, through the use of low viscosity resins that would permeate the porous enamel and form a physical barrier that would prevent the acid diffusion produced by micro-organisms. Purpose: To compare penetration levels in artificial white spot lesions, of infiltrant resin ICON™ and 2 conventional adhesives systems, XP-Bond™ and Single Bond 2™. Methodology: White spot lesions (ICDAS code 2) were caused in 75 premolars or third molars were extracted in good conditions, by immersion in a 0.1 M lactic acid solution (pH 4.5) at 37℃ for 8 weeks. They were divided randomly into 3 groups of 25 samples and applied the following resins, Group A: ICON™, B: XP-Bond™ and C: Single Bond 2™. Subsequently, the enamel was removed with hydrochloric acid to expose resin saturated area and the samples were metalized with Au-Pd for SEM observation. The resin tags lengths were measured on microphotographs through software, and the values were analyzed with the statistics ANOVA and Scheffé post-test. Results: There were significant differences (p ™ (82.7 μm ± 26.8 μm) compared to adhesive systems XP-Bond™ (58.5 μm ± 29.3 μm) and Single Bond 2™ (44.8 μm ± 32.5 μm). We found no significant differences between the two adhesive systems (p > 0.05). Conclusion: Under the conditions tested, the penetration of infiltrant ICON was significantly higher than the adhesive systems; however, it removes the surface layer of the enamel.