In vitro effect of a resin infiltrant on different artificial caries-like enamel lesions

Author(s)

Carvalho de Almendra Freitas, Maria Cristina ^{[1, 2]} ; Nunes, Larissa Vasconcellos ^[1] ; Comar, Livia Picchi ^[3] ; Rios, Daniela ^[4] ; Magalhaes, Ana Carolina ^[3] ; Honorio, Heitor Marques ^[4] ; Wang, Linda ^[1]

Affiliation

^[1] Univ Sao Paulo, Dept Operat Dent Endodont & Dent Mat, Bauru Sch Dent, Alameda Octavio Pinheiro Brisolla 9-75, BR-17012901 Bauru, SP - Brazil

^[2] DeVry Educ Grp, DeVry FACID, Ave Rio Poti 2381, BR-64999999 Teresina, PI - Brazil

^[3] Univ Sao Paulo, Bauru Sch Dent, Dept Biol Sci, Alameda Octavio Pinheiro Brisolla 9-75, BR-17012901 Bauru, SP - Brazil

^[4] Univ Sao Paulo, Bauru Sch Dent, Dept Pediat Dent Orthodont & Collect Hlth, Alameda Octavio Pinheiro Brisolla 9-75, BR-17012901 Bauru, SP - Brazil

• Document type: Journal article
• Source: ARCHIVES OF ORAL BIOLOGY; v. 95, p. 118-124, NOV 2018.
• Web of Science Citations: 3

Abstract

Objectives: A resin infiltrant was employed for the treatment of active white spot lesions due to its ability to penetrate into the enamel pores and prevent the progression of the lesion. However, limited information is available about its mechanical effect on different artificial enamel lesions as well as on its resistance to further demineralization. Therefore, this study aimed to evaluate the effects of the Icon (R) infiltrant on different artificial caries-like enamel lesions and its resistance to new acid challenges. Design: Artificial lesions were produced in bovine enamel using three different protocols (demineralization/remineralization cycling, DE-RE; 8% methylcellulose gel, MC; and methyl ethyl diphosphonate solution, MHDP; n = 13). The specimens were treated with Icon (R) and subjected to a new acid challenge using DE-RE cycling. The surface and cross-sectional hardness were evaluated in sound, demineralized, treated and further demineralized enamel areas. Data were statistically analyzed using ANOVA and Tukey's test (p < 0.05). Results: All of the demineralizing protocols produced subsurface artificial caries lesions. The infiltrant was able to partially recover the surface hardness and prevent further surface hardness loss in enamel previously demineralized using the DE-RE and MHDP protocols. In regard to cross-sectional hardness, no positive effect was found. Conclusions: The effect of the infiltrant depends on the type of lesion created in vitro, and its action is limited to the lesion surface. (AU)

• FAPESP's process: 12/18579-2 - Effect of a resin infiltrant on white spot lesions treatment: in vitro, in situ and in vivo analyses
• Grantee: Maria Cristina Carvalho de Almendra Freitas
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 12/13157-2 - Effect of treatment of artificial caries with resin infiltrant followed by new acid challenged
• Grantee: Larissa Vasconcellos Nunes
• Support Opportunities: Scholarships in Brazil - Scientific Initiation