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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of daily use of fluoridated dentifrice and bleaching gels containing calcium, fluoride, or trimetaphosphate on enamel hardness: an in vitro study

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Author(s):
Prette Junior, Ronaldo Antonio Tolentino [1] ; DaneIon, Marcelle [1, 2] ; Pessan, Juliano Pelim [1] ; Emerenciano, Nayara Goncalves [1] ; Cunha, Robson Frederico [1] ; Shinohara, Mirela Sanae [1] ; Botazzo Delbem, Alberto Carlos [1]
Total Authors: 7
Affiliation:
[1] Sao Paulo State Univ UNESP, Sch Dent, Dept Prevent & Restorat Dent, Rua Jose Bonificio 1193, BR-16015050 Aracatuba, SP - Brazil
[2] Univ Ribeido Preto UNAERP, Dept Dent, Ave Costabile Romano 2201, BR-14096900 Ribeirao Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: CLINICAL ORAL INVESTIGATIONS; v. 25, n. 3 JUN 2020.
Web of Science Citations: 0
Abstract

Objective This study evaluated the effects of calcium gluconate (CaGlu), sodium fluoride (NaF), sodium trimetaphosphate (TMP), and NaF/TMP added to a 35% hydrogen peroxide (HP) bleaching gel for the reduction in enamel demineralization in vitro, with and without the use of a fluoridated dentifrice. Design Enamel blocks (n = 100) were obtained from bovine incisors (n = 200) after flattening and subjected to initial surface hardness (SH) analysis. The blocks were divided according to the bleaching gel (35% HP; 35% HP + 0.05% NaF; 35% HP + 0.25% TMP; 35% HP + 0.05% NaF + 0.25% TMP; 35% HP + 2% CaGlu) and were treated with ether non-fluoridated or fluoridated (1100 ppm) dentifrice. The bleaching gels were applied thrice (40 min/session) at the intervals of 7 days between each application. After 21 days, the final SH for the calculation of the percentage of SH loss (%SH) and cross-sectional hardness for the evaluation of the integrated hardness area (IH) were determined. Results Bleaching containing HP + NaF + TMP presented lowest %SH (p < 0.001), regardless of the dentifrice used. HP + NaF + TMP bleaching gel led to lower subsurface enamel mineral loss (IH) compared to the other groups (p < 0.001), and these did not differ from each other (p > 0.05). Daily use of fluoride dentifrice led to higher IH values (p < 0.001), regardless of the bleaching gels. Conclusion The addition of NaF/TMP to a 35% HP bleaching gel remarkably reduced the mineral loss compared to the cases of the other bleaching gels, regardless of dentifrice. (AU)

FAPESP's process: 16/26132-9 - Effect of the addition of trimetaphosphate and fluoride in a bleaching gel based on hydrogen peroxide at 35% on the hardness of the enamel submitted to the daily use of fluoridated dentifrice
Grantee:Ronaldo Antônio Tolentino Prette Júnior
Support Opportunities: Scholarships in Brazil - Scientific Initiation