Effect of a single application of TiF4 and NaF varnishes and solutions on dentin erosion in vitro

Magalhães, Ana Carolina; Levy, Flávia Mauad; Ríos, Daniela; Buzalaf, Marília Afonso Rabelo

doi:10.1016/j.jdent.2009.09.015

Cited by 51 publications

(60 citation statements)

References 24 publications

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“…However, optical profilometry allows the performance of multiple scans on the same sample, which made possible evaluations after erosive-like lesions formation and at the in situ phase. Considering that results may be influenced by matrix shrinkage/compression -caused by dentin dehydration and abrasive procedure -, in order to minimize possible bias, there was a thorough moisture control during analysis (12) and standardization of intraoral abrasion (11).…”

Section: Discussionmentioning

confidence: 99%

“…Samples were kept at relative humidity until scanning time in order to prevent dentin dehydration. Immediately before analysis, the excess water was removed with an absorbent paper (12). All samples were analyzed in profilometer three times during the experiment: curvature analysis, standardization of erosive-like lesions formed in vitro and in situ posttreatment evaluation.…”

Section: Profilometric Analysismentioning

confidence: 99%

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The In Situ Effect of Titanium Tetrafluoride Gel on Erosion/Abrasion Progression in Human Dentin

et al. 2017

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Erosion incidence is increasing and its control is still a challenge in clinical practice. This study evaluated 4% TiF 4 -gel effects on eroded human dentin subjected to in situ erosive/ abrasive episodes. Seventy-two previously eroded dentin slabs (0.05 M citric acid, pH 2.3, 20 min) were allocated to 6 groups (n=12) according to the treatment to be performed during the in situ phase and number of erosive/abrasive cycles, as follows: 4% TiF 4 -gel applied once (TiF 4 1), twice (TiF 4 2) or three times (TiF 4 3) followed by 1, 2 and 3 erosive/ abrasive cycles, respectively. Gel was applied before the beginning of the next cycle. Control groups were subjected to 1 (C1), 2 (C2) and 3 (C3) erosive/abrasive cycles only. A seventh group (n=12) comprised in vitro uneroded samples (UN) subjected to 3 erosive/ abrasive cycles. Each cycle corresponded to 2 days of erosive (citric acid 0.5%, pH 2.6, 6x/day) and abrasive (electric toothbrush, 10 s/sample, 1 x/day) challenges. Samples were evaluated under profilometry and environmental scanning electron microscopy (ESEM). Atomic force microscopy images (AFM) were also made (n=3). Repeated measures 2-way ANOVA and Tukey test (p<0.001) showed that TiF 4 2, which did not differ from TiF 4 1 and TiF 4 3, revealed a significant reduction in surface loss compared to all control groups. TiF 4 1 and TiF 4 3 showed no significant difference from C1, but both groups demonstrated significantly smaller surface loss than C2 and C3. ESEM and AFM micrographs suggested alterations on treated surfaces compared to samples from control groups, showing reduced diameters of dentinal tubules lumens. Therefore, TiF 4 was able to reduce the progression of erosive/abrasive lesions.

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Section: Discussionmentioning

confidence: 99%

Section: Profilometric Analysismentioning

confidence: 99%

The In Situ Effect of Titanium Tetrafluoride Gel on Erosion/Abrasion Progression in Human Dentin

et al. 2017

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“…Moreover, SECM can be easily employed as a powerful tool to investigate the complex chemical reactions responsible for acid erosion as well as in the elucidation of the mechanism of protection by inhibiting ions. Another possibility to prevent dental International Journal of Electrochemistry 5 erosive demineralization is the use of TiF 4 or NaF varnishes, whose protective effect is attributed to the formation of acidresistant blocking layers [24,25]. The enamel erosion has been typically monitored by ex-situ contact profilometry [26,27] and the effectiveness of such treatments can be also easily assessed through a series of simple and fast SECM experiments.…”

Section: Discussionmentioning

confidence: 99%

Scanning Electrochemical Microscopy as a Tool for the Characterization of Dental Erosion

Castro

Lima

Ferreira

et al. 2011

International Journal of Electrochemistry

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When the tooth is exposed to acidic environments, an irreversible loss of dental hard tissue occurs in a process called dental erosion. In this work, the scanning electrochemical microscopy (SECM) was used to probe the consumption of protons at the vicinity of a tooth surface with a platinum microelectrode fixed at −0.5 (V) versus Ag/AgCl/KCl (sat) . SECM approach curves were recorded to assess the extent of diffusion in the solution close to the tooth substrate. SECM images clearly demonstrated that the acid erosion process is very fast at solution pH values in the range between 3 and 4.

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“…The specimens in the erosion group were immersed in a cola drink (Coca-Cola, SP, Brazil -pH 2.3), using individual containers (10 mL/specimen) at room temperature, for 90 seconds 4 times/ day 3,16 . Subsequently, the specimens were rinsed thoroughly with deionized water and immersed in artificial saliva, at a pH of 7.0 (10 mL/block) at room temperature for 2h, between the erosive challenges 17 and overnight 13,16 .…”

Section: Erosive Challengementioning

confidence: 99%

“…Subsequently, the specimens were rinsed thoroughly with deionized water and immersed in artificial saliva, at a pH of 7.0 (10 mL/block) at room temperature for 2h, between the erosive challenges 17 and overnight 13,16 . The artificial saliva was created according to Amaechi et al 18 .…”

Section: Erosive Challengementioning

confidence: 99%

Effects of erosive challenge on the morphology and surface properties of luting cements

Gondim

Medeiros

Costa

et al. 2016

Rev. odontol. UNESP

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ResumoIntrodução: Poucos estudos investigaram as propriedades de superfície de cimentos após desafio erosivo. Objetivo: Avaliar a rugosidade da superfície (Ra), dureza Vickers (VHN) e morfologia de superfície de 4 cimentos após desafio erosivo. Material e método: Vinte amostras de cada cimento foram preparadas (4×2mm) e divididas em grupo experimental (desafio erosivo) e controle (saliva artificial) (n=10): Rely X U200 (U200); Rely X ARC (ARC); Ketac Cem Easy Mix (Ketac) e Fosfato de Zinco (ZnP). O desafio erosivo foi realizado com quatro ciclos erosivos diárias (90s) em bebida à base de cola e 2h em saliva artificial durante 7 dias. As leituras de Ra e VHN foram realizadas antes e após erosão. A porcentagem de perda de dureza (%VHN) foi obtida depois da erosão. A morfologia de superfície foi analisada por microscopia eletrônica de varredura (MEV). Foram utilizados testes de ANOVA, Tukey e T-Student (α=0,05). Resultado: Após a erosão, foi observado aumento dos valores de Ra em todos os cimentos testados, e os grupos U200 e ZNP tiveram a maior %VHN. Após imersão em saliva, apenas os grupos U200 e ZnP tiveram aumento significativo nos valores de Ra e não houve diferenças significativas entre os grupos quanto à %VHN. A análise em MEV mostrou que os grupos Ketac e ZNP apresentaram superfícies rugosas e porosas, e o grupo U200 apresentou maior degradação da matriz comparado ao grupo ARC. Conclusão: O desafio erosivo com bebida a base de cola afetou as propriedades de superfície de todos os cimentos.Descritores: Erosão dentária; cimentos de resina; cimentos de ionômero de vidro; testes de dureza. AbstractIntroduction: Few studies investigated the surface properties of luting cements after erosive challenge. Objective: To evaluate the surface roughness (Ra), Vickers hardness (VHN) and morphology of 4 luting cements after erosive challenge. Material and method: Twenty specimens of each cement were prepared (4×2mm) and divided into experimental (erosive challenge) and control (artificial saliva) groups (n=10): Rely X U200 (U200); Rely X ARC (ARC); Ketac Cem Easy Mix (Ketac) and Zinc phosphate (ZnP). The erosive challenge was performed by four daily erosive cycles (90s) in a cola drink and 2 h in artificial saliva over 7 days. Ra and VHN readings were performed before and after erosion. The percentage of hardness loss (%VHN) was obtained after erosion. The surface morphology was analyzed by scanning electron microscopy (SEM). ANOVA, Tukey and Student-T tests were used (α=0.05). Result: After erosion, all luting cements had increase in Ra values and U200 and ZnP groups had the highest %VHN. After saliva immersion, only U200 and ZnP groups had significant increases in Ra values and there were no significant differences among the groups in %VHN. SEM analysis showed that Ketac and ZnP groups had rough and porous surfaces, and U200 group had higher resin matrix degradation than ARC group. Conclusion: Erosive challenge with a cola drink affected the surface properties of all luting cements.

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Effect of a single application of TiF4 and NaF varnishes and solutions on dentin erosion in vitro

Abstract: Duraphat varnish seems to be the best option to partially reduce dentin erosion. However, the maintenance of the effects of this treatment after successive erosive challenges is limited.

Cited by 51 publications

References 24 publications

The In Situ Effect of Titanium Tetrafluoride Gel on Erosion/Abrasion Progression in Human Dentin

The In Situ Effect of Titanium Tetrafluoride Gel on Erosion/Abrasion Progression in Human Dentin

Scanning Electrochemical Microscopy as a Tool for the Characterization of Dental Erosion

Effects of erosive challenge on the morphology and surface properties of luting cements

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