Effects of different toothpastes on the prevention of erosion in composite resin and glass ionomer cement enamel and dentin restorations

Author(s)

Mariana Dias MODA ^[1] ; André Luiz Fraga BRISO ^[2] ; Renata Parpinelli de OLIVEIRA ^[3] ; Núbia Inocencya Pavesi PINI ^[4] ; Diego Felipe Mardegan GONÇALVES ^[5] ; Paulo Henrique dos SANTOS ^[6] ; Ticiane Cestari FAGUNDES ^[7]

Affiliation

^[1] Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Departamento de Odontologia Restauradora - Brasil

^[2] Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Departamento de Odontologia Restauradora - Brasil

^[3] Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Departamento de Odontologia Restauradora - Brasil

^[4] Centro Universitário UNINGÁ. Departamento de Odontologia Restauradora e Prótese - Brasil

^[5] Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Departamento de Odontologia Restauradora - Brasil

^[6] Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Departamento de Materiais Odontológicos e Prótese - Brasil

^[7] Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Departamento de Odontologia Restauradora - Brasil

• Document type: Journal article
• Source: Journal of Applied Oral Science; v. 28, 2020-09-28.

Abstract

Abstract Objective This study aimed to evaluate the effects of different toothpastes on the surface wear of enamel, dentin, composite resin (CR), and resin-modified glass ionomer cement (RMGIC), and to perform a topographic analysis of the surfaces, based on representative images generated by atomic force microscopy (AFM) after erosion-abrasion cycles. Methodology One hundred and forty bovine incisors were collected and divided into two groups: 72 enamel and 72 dentin blocks (4×4 mm). Half of the specimens were restored with CR (Filtek Z350 XT) and the other half with RMGIC (Fuji II LC). Then, samples were submitted to a demineralization cycle (5 days, 4×2 min/day, 1% citric acid, pH 3.2) and exposed to three different toothpastes (2×15 s/day): without fluoride (WF, n=12), sodium fluoride-based (NaF, n=12), and stannous fluoride-based (SnF2, n=12). Surface wear, as well as restoration interfaces wear, were investigated by profilometry of the dental substrates and restorative materials. All representative surfaces underwent AFM analysis. Data were analyzed by two-way analysis of variance and Tukey’s tests (α=0.05). Results NaF-based toothpaste caused the greater dentin surface wear (p<0.05). Toothpastes affected only enamel-restoration interfaces. AFM analysis showed precipitate formation in dentinal tubules caused by the use of fluoride toothpastes. Conclusions NaF-based toothpastes had no protective effect on enamel adjacent to CR and RMGIC against erosion-abrasion challenges, nor on dentin adjacent to RMGIC material. SnF2-based toothpastes caused more damage to interfaces between enamel and RMGIC. (AU)

• FAPESP's process: 17/23360-3 - Effect of different dentifrices on erosion prevention of resin composite and glass ionomer cements restorations in enamel and dentin
• Grantee: Renata Parpinelli de Oliveira
• Support Opportunities: Scholarships in Brazil - Scientific Initiation