Effect of TiF4 varnish after pre-treatment with proanthocyanidin or chlorhexidine on the progression of erosive dentin loss in the presence or absence of the demineralized organic matrix

Author(s)

Vertuan, Mariele ^[1] ; Souza, Beatriz Martines ^[2] ; Mosquim, Victor ^[1] ; Silva, Camila Vieira ^[3] ; Freitas, Patricia Moreira ^[3] ; Borges, Ana Flavia Sanches ^[1] ; Rios, Daniela ^[4] ; Magalhaes, Ana Carolina ^[2] ; Honorio, Heitor Marques ^[4]

Affiliation

^[1] Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Bauru, SP - Brazil

^[2] Univ Sao Paulo, Bauru Sch Dent, Dept Biol Sci, Bauru, SP - Brazil

^[3] Univ Sao Paulo, Sch Dent, Dept Restorat Dent, Sao Paulo, SP - Brazil

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

• Document type: Journal article
• Source: JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS; v. 115, MAR 2021.
• Web of Science Citations: 0

Abstract

This study evaluated the protective effect of TiF4 varnish, after pre-treatment with proantocyanidin or chlorhexidine, on the progression of erosive dentin loss (EDL), under the presence or absence of the demineralized organic matrix (DOM). Bovine root dentin samples were eroded for 30 min (0.1% citric acid, pH 2.5) and the loss was measured by profilometry. Half of them were subjected to the DOM removal using collagenase for 4 days, while the other half remained immersed in water. The removal of DOM was checked by profilometry. Samples were divided into 24 groups (n = 15) according to the factors: 1- With or without DOM; 2- Pre-treatment with 0.012% chlorhexidine gel, 10% proanthocyanidin gel or untreated for 1 min; 3-Final Treatment with TiF4 varnish, NaF varnish, placebo varnish or untreated for 6 h. The samples were submitted to a pH cycling for 5 days: 0.1% citric acid (4 x 90s/day) and artificial saliva between the challenges. The final profile was obtained for the calculation of EDL (mu m, three-way ANOVA/Tukey test). When DOM was preserved, the EDL was lower compared to the condition without DOM (7.08 +/- 4.03 mu m and 9.80 +/- 3.79 mu m, p < 0.001, respectively), regardless of the treatments. The pre-treatment had no influence on the progression of EDL (p = 0.637), while the final treatment (TiF4 varnish only, 6.77 +/- 4.08 mu m) was effective in reducing the progression of EDL (NaF varnish: 9.52 +/- 4.02 mu m; Placebo varnish: 8.64 +/- 4.06 tint and no treatment: 8.80 +/- 3.95 mu m). It can be concluded that DOM has important protective effect on the progression of EDL. TiF4 was the unique treatment capable of reducing EDL progression, regardless of the pre-treatment of DOM. (AU)

• FAPESP's process: 18/05847-5 - Effect of metalloproteinases inhibitors and/or remineralizing agents on tooth structure submitted to erosion
• Grantee: Heitor Marques Honório
• Support type: Regular Research Grants