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Vieira TI, de Sousa Andrade KM, Cabral LM, Valença AMG, Maia LC, Batista AUD. Linear and areal surface roughness assessments for the study of tooth wear in human enamel. Clin Oral Investig 2023; 27:329-338. [PMID: 36205787 DOI: 10.1007/s00784-022-04727-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 09/27/2022] [Indexed: 01/28/2023]
Abstract
OBJECTIVES To test 8 models of linear surface roughness assessment in characterizing surface profile description and to correlate these models with equivalent areal parameters over sound human enamel in vitro. MATERIALS AND METHODS Thirty enamel blocks were randomly selected. The roughness data (2D-Rp; Rv; Rz; Rc; Rt; Ra; Rq; Rsk; Rku/3D-Sp; Sv; Sz; Sa; Sq; Ssk; Sku) was obtained in duplicate in a non-contact 3D optical profilometer. The models were composed by 1 single vertical trace (model 1) until 8 traces (model 8 composed by three vertical traces, three horizontal traces, and two diagonal). RESULTS The addition of linear sampling traces to the enamel blocks did not result in Rp, Rv, Rz, Rc, Rt, Ra, Rq, Rsk, and Rku value changes (low power-from 5 to 72%). Significant Spearman's correlation coefficients were obtained in most correlation analysis (Rp ↔ Sp; Rv ↔ Sv; Rz ↔ Sz; Ra ↔ Sa; Rq ↔ Sq; and Rku ↔ Sku). CONCLUSIONS A single vertical trace in the middle of the sample was representative of the overall enamel surface roughness (Rp, Rv, Rz, Rc, Rt, Ra, Rq, Rsk, and Rku) models. The majority of the assessed models in the correlation evaluation presented significant and positive association. CLINICAL RELEVANCE The findings highlight the applicable model for roughness analysis over human enamel recommended for research and in situ trials assessments.
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Affiliation(s)
- Thiago Isidro Vieira
- Centro de Ciências da Saúde - Térreo, Post-Graduate Program in Dentistry. Federal University of Paraíba, Campus I - Cidade Universitária CEP: 58.051-900, João Pessoa, PB, Brazil.
| | | | - Lúcio Mendes Cabral
- School of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ana Maria Gondim Valença
- Department of Clinic and Social Dentistry, School of Dentistry, Federal University of Paraíba, Joao Pessoa, PB, Brazil
| | - Lucianne Cople Maia
- Department of Paediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Chevitarese AB, França Leite KLD, Marañón-Vásquez GA, Masterson D, Pithon M, Maia LC. What is the effectiveness of titanium tetrafluoride to prevent or treat dental caries and tooth erosion? A systematic review. Acta Odontol Scand 2022; 80:441-456. [PMID: 35147483 DOI: 10.1080/00016357.2022.2032329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Answer the question: What is the effectiveness of titanium tetrafluoride (TiF4) when compared to other fluorides, placebo solution or a negative control to prevent or treat dental caries and tooth erosion? MATERIALS AND METHODS This review is in accordance with PRISMA guidelines. In vivo and in situ studies that used TiF4 over enamel or dentine were included. Electronic searches were conducted on MEDLINE, Scopus, Embase, WOS, Cochrane Library, VLH, Clinical Trials and OpenGrey. Risk of bias (ROB) assessments used RoB2 and ROBINS-I for randomized and non-randomized controlled trials (RCTs and on-RCTs); Syrcle's ROB tool for animal studies; and a modified tool proposed by Hollanders for in situ studies. RESULTS A total of 28 studies met the eligibility criteria. From these, 6 were in humans (3 RCT and 3 Non-RCT); 4 were in animals and 18 were in situ. For in vivo studies, all RCTs have some concerns related to ROB and all of the non-RCT studies were classified as with serious risk. One animal study had a low and three a high ROB. Regarding in situ studies, seven had a low, ten had an average and only one had a high ROB. The certainty of the evidence (GRADE) ranged from moderate to very low. CONCLUSIONS Although most of the results suggest a positive effect of TiF4 on the prevention and treatment of caries and dental erosion, it is not possible to have definitive conclusions due to the high studies' methodological heterogeneity, and the low quality of evidence for most outcomes. REGISTRATION The protocol of this syste. atic review was registered in the OPEN SCIENCE FRAMEWORK database (osf.io/6dgs9) DOI:10.17605/OSF.IO/KUZA7 on 6 August 2020.
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Affiliation(s)
- Ana Beatriz Chevitarese
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Karla Lorene de França Leite
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Guido A. Marañón-Vásquez
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Danielle Masterson
- Central Library of the Health Science Center, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Matheus Pithon
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucianne Cople Maia
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Chevitarese AB, Leite KLDF, Marañón-Vásquez GA, Masterson D, Vicente-Gomila JM, Gonçalves AF, Pitton M, Maia LC. Research Trends on Preventive and Therapeutic Use of TIF4 for Dental Caries and Erosion. PESQUISA BRASILEIRA EM ODONTOPEDIATRIA E CLÍNICA INTEGRADA 2022. [DOI: 10.1590/pboci.2022.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
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LINS RODRIGOBARROSESTEVES, SANTI MARINARODRIGUES, NORONHA MAYARADOSSANTOS, SEBOLD MAICON, CAVALLI VANESSA. DOES TITANIUM TETRAFLUORIDE PROMOTE A PROTECTIVE EFFECT ON ERODED TOOTH? A SYSTEMATIC REVIEW AND META-ANALYSIS. J Evid Based Dent Pract 2021; 22:101682. [DOI: 10.1016/j.jebdp.2021.101682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 11/27/2021] [Accepted: 11/30/2021] [Indexed: 11/28/2022]
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Tavares JDP, da Silva CV, Engel Y, de Freitas PM, Rechmann P. In situ effect of CO2 laser (9.3 μm) irradiation, combined with AmF/NaF/SnCl2 solution in prevention and control of erosive tooth wear in human enamel. Caries Res 2021; 55:617-628. [PMID: 34689142 DOI: 10.1159/000520215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 09/28/2021] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES This single-blind, controlled cross-over in situ study aimed to evaluate the effect of CO2 laser (9.3µm) irradiation, combined with AmF/NaF/SnCl2 solution on prevention and control of Erosive Tooth Wear (ETW) in human enamel. MATERIALS AND METHODS Two trial conditions were analyzed, Condition-1 as ETW-prevention (sound tooth surface) and Condition-2 as ETW-control (in vitro initial erosive lesion). The experiment was conducted in two phases, one with one without exposure to AmF/NaF/SnCl2 solution. A hundred and ninety-two samples of human enamel (3x3x1mm) were randomly divided into 4 experimental groups for each condition: (C) without treatment (negative control); (F) AmF/NaF/SnCl2 solution (positive control); (L) CO2 laser irradiation; (L+F) CO2 laser+AmF/NaF/SnCl2 solution. Twelve volunteers used a removable device each containing 8 samples per phase. Ex-vivo erosive challenges (4×5min/day) and rinsing protocol (1×30s/day) were performed. The surface loss was determined using optical profilometer (n=12 per group), and the surface morphology was observed with Scanning Electron Microscopy (n=3). RESULTS Condition-1 data were analyzed by one-way ANOVA and Condition-2 by two-way repeated measures ANOVA, both with Tukey post-hoc tests (α=5%). Condition-1: groups L (4.59 ±2.95µm) and L+F (1.58 ±1.24µm) showed significantly less surface loss in preventing ETW than groups C and F. Condition-2: in controlling the progression of ETW, L+F was the only group with no significant surface loss between initial erosive lesion (3.65 ±0.16µm) and after erosive challenge (4.99 ±1.17µm). CONCLUSIONS CO2 9.3µm laser application prevented and controlled ETW progression in human enamel, with greater efficiency when combined with AmF/NaF/SnCl2 solution application.
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Affiliation(s)
- Juliane de Paula Tavares
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil,
| | - Camila Vieira da Silva
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Yael Engel
- Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | - Peter Rechmann
- Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California at San Francisco, San Francisco, California, USA
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Almohefer S, Moazzez R, Bartlett D. Comparison of metrology created by profilometry and digital microscopy on polished dentine in an erosion/abrasion model. J Dent 2021; 114:103831. [PMID: 34600043 DOI: 10.1016/j.jdent.2021.103831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/16/2021] [Accepted: 09/22/2021] [Indexed: 10/20/2022] Open
Abstract
OBJECTIVE Digital microscopy offers the ability to scan surfaces to produce 3D reconstructions, allowing step height measurements with high accuracy. The aims of this study were to compare the step heights from the gold standard, non-contact profilometry, to digital microscopy in an erosion/abrasion model. METHODS Dentine specimens (n = 60) were immersed in deionised water, 1450 ppm and 5000 ppm fluoride as sodium fluoride for 3 min, eroded for a total of 25 min in a cycled protocol in 0.3% citric acid (pH 2.7) and abraded with 120 and 240 brushing strokes. Samples were scanned by a non-contacting profilometer with a 0.1 μm vertical resolution and then the same samples imaged with a digital microscope and the step heights compared. Data were analysed in GraphPad Prism 7.00. Data were normally distributed and a 3 way ANOVA with post hoc analysis used to assess for differences between groups. Agreement between the measurement method was assessed using IntraClass Correlations and Bland Altmans plots. RESULTS The mean step heights from the profilometry and the digital microscope on the same samples were not statistically significant different. The magnitude of the differences was less than 0.5 μm. The results of the ANOVA demonstrated that the individual factors fluoride concentration and number of strokes were significant (P<0.05), however, the method of analysis was not (p = 0.74). ICC's between the two methods of analysis were excellent (0.996, p<0.001) with no proportional bias. CONCLUSIONS This study reports that step height on dentine from a digital microscopy and non-contact profilometry were not significantly different. The digital microscope, although slower, allows visual inspection of the samples as well as measurement. SIGNIFICANCE Digital microscope's offer the ability to scan, 2D or 3D images and perform meteorological analysis of samples. In this investigation both showed that 5000 ppm fluoride prevents erosive tooth wear in vitro.
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Affiliation(s)
- Sami Almohefer
- Department of Prosthodontics, University of Hail, Hail, Saudi Arabia; Centre for Clinical, Oral and Translational Sciences, King's College London, Oral and Craniofacial Sciences, London, Northern Ireland United Kingdom.
| | - Rebecca Moazzez
- Centre for Clinical, Oral and Translational Sciences, King's College London, Oral and Craniofacial Sciences, London, Northern Ireland United Kingdom.
| | - David Bartlett
- Centre for Clinical, Oral and Translational Sciences, King's College London, Oral and Craniofacial Sciences, London, Northern Ireland United Kingdom.
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da Cunha WA, Palma LF, Shitsuka C, Corrêa FNP, Duarte DA, Corrêa MSNP. Efficacy of silver diamine fluoride and sodium fluoride in inhibiting enamel erosion: an ex vivo study with primary teeth. Eur Arch Paediatr Dent 2020; 22:387-392. [PMID: 32860201 DOI: 10.1007/s40368-020-00559-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 08/19/2020] [Indexed: 11/26/2022]
Abstract
PURPOSE To assess the efficacy of silver diamine fluoride (SDF) and sodium fluoride (NaF) in inhibiting enamel erosion in primary teeth. METHODS 80 primary canine teeth were immersed for 24 h in 2% NaF, 10% SDF, or distilled water. Afterward, some of them underwent a 10-min acid challenge using either 1% or 10% citric acid while others did not. Specimens selected for negative controls were immersed in distilled water but not exposed to the acids, whereas those selected for positive controls were not only immersed in distilled water, but also exposed to the acids. Following, 3-mL samples were collected for calcium and phosphorus analysis by an atomic emission spectrometer. RESULTS 1% acid caused higher phosphorus loss in the positive control group than in the others (no differences between them). Regarding 10% acid, the SDF group showed lower phosphorus loss compared to the positive control and NaF groups. From calcium loss analysis, SDF and NaF groups presented no significant difference when compared to the positive control groups after both acidic challenges. CONCLUSION Considering phosphorus loss values, 10% SDF seems to be effective in inhibiting enamel erosion after 1% and 10% citric acid challenges, whereas 2% NaF only after 1% citric acid challenge. Regarding calcium loss values, both fluoride agents seem to have no impact on inhibiting enamel erosion after 1% and 10% citric acid challenges.
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Affiliation(s)
- W A da Cunha
- Department of Pediatric Dentistry, University of Cruzeiro do Sul, São Paulo, Brazil
| | - L F Palma
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil.
- Graduate Dentistry Program, Ibirapuera University, Av. Interlagos, 1329, Chácara Flora, São Paulo, SP, 04661-100, Brazil.
| | - C Shitsuka
- School of Dentistry, Faculdades Metropolitanas Unidas, São Paulo, Brazil
| | - F N P Corrêa
- Department of Pediatric Dentistry, School of Dentistry, São Leopoldo Mandic, Campinas, Brazil
| | - D A Duarte
- Department of Pediatric Dentistry, Faculdade de Odontologia da Associação Paulista dos Cirurgiões-Dentistas, São Paulo, Brazil
| | - M S N P Corrêa
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
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Canto FMT, Alexandria AK, Vieira TI, Justino IBDS, Cabral LM, Silva RFD, Maia LC. Comparative Effect of Calcium Mesoporous Silica Versus Calcium and/or Fluoride Products Against Dental Erosion. Braz Dent J 2020; 31:164-170. [PMID: 32556016 DOI: 10.1590/0103-6440202002557] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 10/14/2019] [Indexed: 01/01/2023] Open
Abstract
The aim of this study was to compare the effects of a single application of a new calcium mesoporous silica nanoparticle (Ca2+-MSN) versus other calcium and/or fluoride products against dental erosion. Enamel blocks were half-covered and assigned to six groups (n = 10): Ca2+-MSNs; casein phosphopeptide-amorphous calcium phosphate mousse (CPP-ACP); CPP-ACP/F- (900 ppm F-); titanium tetrafluoride (TiF4 1%); sodium fluoride (NaF 1.36%); and Milli-Q® water (negative control). A single application for each product was completed on the exposed areas of the blocks and were submitted to an erosive challenge. Differences in volumetric roughness (Sa), and tooth structure loss (TSL) by use of three-dimensional noncontact optical profilometry were evaluate. Scanning electron microscopy (SEM) was performed. Analysis of variance and Tukey's test for Sa and the Kruskal-Wallis and Mann-Whitney U tests (p< 0.05) for TSL, respectively. Results: When evaluating Sa, all products presented differences in roughness when compared with the control group (p< 0.05) but not with each other (p > 0.05). However, when analyzing the TSL, it was observed that Ca2+-MSNs, TiF4, and NaF were more effective in preventing dental erosion versus CPP-ACP, CPP-ACP/F-, and Milli-Q® water (p< 0.05). In the SEM images, the negative control presented the worst loss of dental structure, with more porous enamel. Ca2+-MSNs were as effective as TiF4 and NaF to reduce the tooth structure loss.
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Affiliation(s)
- Fernanda Michel Tavares Canto
- Department of Pediatric Dentistry and Orthodontics, UFRJ - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Adílis Kalina Alexandria
- Department of Pediatric Dentistry and Orthodontics, UFRJ - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.,Department of Preventive and Community Dentistry, UERJ - Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Thiago Isidro Vieira
- Department of Pediatric Dentistry and Orthodontics, UFRJ - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | - Lúcio Mendes Cabral
- Department of Drugs and Medicines, School of Pharmacy, UFRJ - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Raphael Ferreira da Silva
- Department of Drugs and Medicines, School of Pharmacy, UFRJ - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Lucianne Cople Maia
- Department of Pediatric Dentistry and Orthodontics, UFRJ - Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Silva CV, Mantilla TF, Engel Y, Tavares JP, Freitas PM, Rechmann P. The effect of CO 2 9.3 μm short-pulsed laser irradiation in enamel erosion reduction with and without fluoride applications-a randomized, controlled in vitro study. Lasers Med Sci 2020; 35:1213-1222. [PMID: 32030555 DOI: 10.1007/s10103-020-02979-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 01/31/2020] [Indexed: 10/25/2022]
Abstract
The aim of this in vitro study was to evaluate the protective effect of short-pulsed CO2 9.3 μm laser irradiation against erosion in human enamel without and combined with TiF4 and AmF/NaF/SnCl2 applications, respectively, as well as compared to the protective effect of these fluoride treatments alone. After polishing, ninety enamel samples (3 × 3mm) were used for 9 different treatment groups: 4% TiF4 gel (pH 1.5, 24,533 ppm F-); AmF/NaF/SnCl2 rinse (pH 4.5; 500 ppm F-, 800 ppm Sn2); CO2 laser (average power 0.58 W); CO2 laser (0.58 W) + TiF4; CO2 laser (0.58 W) + AmF/NaF/SnCl2; CO2 laser (0.69 W); CO2 laser (0.69 W) + TiF4; CO2 laser (0.69 W) + AmF/NaF/SnCl2; negative control (deionized water). TiF4 gel was brushed on only once before the first erosive cycling, while samples treated with AmF/NaF/SnCl2 were daily immersed in 5 ml of the solution before cycling. Laser treatment occurred with a CO2 laser (wavelength 9.3 μm, pulse repetition rate 100 Hz, pulse duration 14.6 μs/18 μs, average power 0.58 W/0.69 W, fluence 1.9 J/cm2/2.2 J/cm2, beam diameter 0.63 mm, irradiation time 10 s, air cooling). TiF4 was applied only once, while AmF/NaF/SnCl2 was applied once daily before the erosive challenge. Surface loss (in μm) was measured with optical profilometry immediately after treatment, and after 5 and 10 days of erosive cycling (0.5% citric acid, pH 2.3, 6 × 2 min/day). Additionally, scanning electron microscopy investigations were performed. All application measures resulted in loss of surface height immediately after treatment. After 5 days, significantly reduced surface loss was observed after applying laser irradiation (both power settings) followed by applications of TiF4 or AmF/NaF/SnCl2 solution (p < 0.05; 2-way ANOVA and Tukey test) compared to fluoride application alone. After 10 days, compared to after 5 days, a reduced tissue loss was observed in all groups treated with AmF/NaF/SnCl2 solution. This tissue gain occurred with the AmF/NaF/SnCl2 application alone and was significantly higher when the application was combined with the laser use (p < 0.05). Short-pulsed CO2 9.3 μm laser irradiation followed by additional application of AmF/NaF/SnCl2 solution significantly reduces the progression of dental enamel erosion in vitro.
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Affiliation(s)
- C V Silva
- Department of Restorative Dentistry, Faculdade de Odontologia, Universidade de São Paulo (USP), Av Prof. Lineu Prestes, 2227 - Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - T F Mantilla
- Department of Restorative Dentistry, Faculdade de Odontologia, Universidade de São Paulo (USP), Av Prof. Lineu Prestes, 2227 - Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - Y Engel
- Department of Restorative Dentistry, Faculdade de Odontologia, Universidade de São Paulo (USP), Av Prof. Lineu Prestes, 2227 - Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - J P Tavares
- Department of Restorative Dentistry, Faculdade de Odontologia, Universidade de São Paulo (USP), Av Prof. Lineu Prestes, 2227 - Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - P M Freitas
- Department of Restorative Dentistry, Faculdade de Odontologia, Universidade de São Paulo (USP), Av Prof. Lineu Prestes, 2227 - Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - P Rechmann
- Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California at San Francisco, 707 Parnassus Avenue, San Francisco, CA, 94143, USA.
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Gonçalves DFM, Briso ALF, Pini NIP, Moda MD, Parpinelli de Oliveira R, Santos PHD, Fagundes TC. Effects of dentifrices on mechanical resistance of dentin and restorative materials after erosion and abrasion. J Mech Behav Biomed Mater 2019; 97:7-12. [PMID: 31082715 DOI: 10.1016/j.jmbbm.2019.05.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 04/30/2019] [Accepted: 05/03/2019] [Indexed: 10/26/2022]
Abstract
The aim of this study was to evaluate the mechanical resistance of dentin and restorative materials submitted to erosive/abrasive challenges with different dentifrices. The dentin was restored using a resin-modified glass-ionomer (RMGIC) or a composite resin (RC). One hemiface of the sample was protected, and the other was subdivided according to the applied dentifrice (n = 10): without fluoride (SF), sodium fluoride (NaF) and stannous fluoride (SnF). The specimens were submitted to erosive/abrasive cycles, the varnish was removed, and the Martens hardness (HMV) and elastic modulus (Eit) were evaluated. The data were analyzed by repeated two-way ANOVA measurements and Tukey tests (alpha = 0.05). When analyzing the HMV on the test side, there was no influence of the dentifrices in the dentin; however, the orders of NaF < SnF = SF in RC and SnF > NaF = SF in RMGIC were observed. Comparing the treated surfaces, there were no differences in the dentin, and only the SF since CR presented an HMV superior to that of RMGIC. Comparing control and test sides, both dentins obtained a decreased HMV after the erosive/abrasive challenge; for the restorative materials, superior values were found only for SnF in the RMGIC. The Eit values were influenced more by the dentifrices on the test side for the dentin adjacent to the RMGIC, with the lowest values shown for the SF, and for both materials, the highest values were shown for the SnF group. No differences were found when comparing each dentin treated with the same dentifrice; however, the RMGIC presented a superior Eit than the CR when brushed with both dentifrices with a fluoride. Comparing the control and test sides, the same results were obtained for the HMV. The dentifrices showed little influence on the dentin substrate, whereas the dentifrice with SnF enhanced the mechanical properties of the restorative materials, which was more evident in the RMGIC.
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Affiliation(s)
- Diego Felipe Mardegan Gonçalves
- Department of Restorative Dentistry, São Paulo State University (Unesp), School of Dentistry, Araçatuba. R. José Bonifácio 1193, CEP, 16015-050, Araçatuba/SP, Brazil
| | - André Luiz Fraga Briso
- Department of Restorative Dentistry, São Paulo State University (Unesp), School of Dentistry, Araçatuba. R. José Bonifácio 1193, CEP, 16015-050, Araçatuba/SP, Brazil
| | - Nubia Inocencya Pavesi Pini
- Department of Restorative Dentistry and Prosthodontics, Ingá University Center - UNINGÁ, 317 PR Road, Maringá/PR, Brazil
| | - Mariana Dias Moda
- Department of Restorative Dentistry, São Paulo State University (Unesp), School of Dentistry, Araçatuba. R. José Bonifácio 1193, CEP, 16015-050, Araçatuba/SP, Brazil
| | - Renata Parpinelli de Oliveira
- Department of Restorative Dentistry, São Paulo State University (Unesp), School of Dentistry, Araçatuba. R. José Bonifácio 1193, CEP, 16015-050, Araçatuba/SP, Brazil
| | - Paulo Henrique Dos Santos
- Department of Dental Materials and Prosthodontics, São Paulo State University (Unesp), School of Dentistry, Araçatuba. R. José Bonifácio 1193, CEP, 16015-050, Araçatuba/SP, Brazil
| | - Ticiane Cestari Fagundes
- Department of Restorative Dentistry, São Paulo State University (Unesp), School of Dentistry, Araçatuba. R. José Bonifácio 1193, CEP, 16015-050, Araçatuba/SP, Brazil.
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Bridi E, Leme-Kraus A, Aydin B, Basting R, Bedran-Russo A. Long-term evaluation of the stability of dentin matrix following treatments with aqueous solutions of titanium tetrafluoride at different concentrations. Arch Oral Biol 2018; 91:51-56. [DOI: 10.1016/j.archoralbio.2018.04.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 04/05/2018] [Accepted: 04/08/2018] [Indexed: 12/21/2022]
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Beltrame A, Suchyta D, Abd Alraheam I, Mohammed A, Schoenfisch M, Walter R, Almeida I, Souza L, Miguez P. Effect of Phosphorylated Chitosan on Dentin Erosion: An in vitro Study. Caries Res 2018; 52:378-386. [DOI: 10.1159/000486521] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 12/23/2017] [Indexed: 11/19/2022] Open
Abstract
The aim of this study was to evaluate the antierosive effect of phosphorylated chitosan in dentin. Bovine dentin specimens were randomly distributed into the following groups: (1) no treatment (NoTx/negative control), (2) phosphate-buffered saline solution (PBS), (3) AmF/NaF/SnCl2 (positive control), (4) 0.5% chitosan solution (Chi), (5) 0.5% neutral phosphorylated (NP)-Chi, and (6) 0.5% alkaline phosphorylated (AP)-Chi. The specimens were submitted to de-remineralization treatment cycles for 5 days: 0.5% citric acid (2 min), remineralizing solution (30 min), and surface treatment according to assigned groups (2 min, 6×/day). The loss of dentin surface was measured by profilometry. Hardness and modulus of elasticity were measured using a nanoindenter equipped with a Berkovich diamond tip. The dentin surface was analyzed by scanning electron microscopy (SEM). The largest loss of dentin was observed in the No Tx and PBS groups (approx. 25 µm). The group treated with AmF/NaF/SnCl2 showed less loss of dentin (67% reduction vs. NoTx and PBS), followed by the groups treated with NP-Chi and AP-Chi (33% reduction), and Chi (18% reduction). Nanohardness and modulus of elasticity were similar in the NoTx and PBS groups, with a small increase in stiffness in all other groups. SEM revealed that the experimental solution of AP-Chi had a favorable effect on maintaining the integrity of collagen fibrils. AmF/NaF/SnCl2 showed a preserved mineralized collagen surface. Further studies are warranted to explore this nontoxic phosphorylated chitosan polymer as an effective agent in the prevention and treatment of dental erosion.
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Belcheva A, El Feghali R, Nihtianova T, Parker S. Effect of the carbon dioxide 10,600-nm laser and topical fluoride gel application on enamel microstructure and microhardness after acid challenge: an in vitro study. Lasers Med Sci 2018; 33:1009-1017. [PMID: 29354864 DOI: 10.1007/s10103-018-2446-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 01/12/2018] [Indexed: 11/29/2022]
Abstract
The aim of this in-vitro study was to evaluate positive effects of the carbon dioxide laser (CO2, 10,600 nm) with acidulated phosphate fluoride (APF) gel on enamel acid resistance. Twenty extracted human third molars (40 surfaces) were randomly assigned into four groups: group C, untreated control; group L, CO2 laser alone group; group F, APF 1.23% fluoride gel; and group FL, APF 1.23% gel and laser. Samples from group L were irradiated with a CO2 laser for 30s. The parameter settings used were average power, 0.73 W; time on, 100 μs; time off, 40 ms; tip-to-tissue distance, 20 mm; tip diameter 700 μm; and energy density with movements, 5 J/cm2. Samples from group F were treated with the APF gel for 4 min, and the gel was washed off with distilled water. The enamel samples from group FL were treated with APF gel for 4 min and then irradiated with the CO2 laser for 30s without removing the gel. Each enamel sample was placed in 50 ml soft drink (pH = 2.75) for 10 min then rinsed with deionized water and stored in artificial saliva at 37 °C for 1 h. Samples were assessed for Vickers hardness number (VHN) before and after treatments and subjected to SEM analysis. Data were analyzed using a one-way analysis of variance (ANOVA) and Tukey's test (α < 0.05). After the acid challenge, the untreated C group was demineralized to a great extent and the enamel surface was with the lowest mean score of microhardness. The observed VHN in the control (C group) had a mean value of 176.13, the scores in the CO2 laser group (L group) were with mean value of 238.40, the F group with a mean value of 218.45, and the fluoride-treated and laser-irradiated FL group-with a mean of 268.28 VHN. Paired t test performed to compare groups C, L, F, and FL has shown that group FL has greater resistance to decrease in microhardness of dental enamel (P ≤ 0.05) on exposure to acidic protocol. After the acid challenge, the fluoride-treated and laser-irradiated samples (group FL) showed the least diminution in enamel surface microhardness. The sub-ablative carbon dioxide laser irradiation in combination with fluoride treatment is more effective in protecting enamel surface and resisting demineralization than CO2 laser irradiation or fluoride alone.
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Affiliation(s)
- A Belcheva
- Department of Pediatric Dentistry, Faculty of Dental medicine, Medical University of Plovdiv, Plovdiv, Bulgaria.
| | - R El Feghali
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
| | - T Nihtianova
- Department of Pediatric Dentistry, Faculty of Dental medicine, Medical University of Plovdiv, Plovdiv, Bulgaria
| | - S Parker
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
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Chinelatti MA, Tirapelli C, Corona SAM, Jasinevicius RG, Peitl O, Zanotto ED, Pires-de-Souza FDCP. Effect of a Bioactive Glass Ceramic on the Control of Enamel and Dentin Erosion Lesions. Braz Dent J 2017; 28:489-497. [DOI: 10.1590/0103-6440201601524] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 04/06/2017] [Indexed: 11/21/2022] Open
Abstract
Abstract This study evaluated the effect of a bioactive glass ceramic for the control of erosion and caries lesions. Fragments (n=10) of bovine enamel and root dentin received daily application of different treatments (Biosilicate; Acidulated Phosphate Fluoride- APF; Untreated - control) during the performance of erosive cycles. Surfaces were analyzed with 3D optical profilometry to quantify the superficial loss in four periods (1, 7, 14 and 21 days), as well as the lesion depth with confocal laser scanning microscopy. For caries progression assessment, initial Knoop microhardness was measured on enamel bovine fragments. Initial carious lesions were developed and specimens were divided into three groups (n=10), according to the daily topical application (Biosilicate; APF; no application - control), during the de-remineralization cycles for 14 days. Final microhardness was obtained to calculate the change of surface microhardness. Subsurface demineralization was analyzed using cross-sectional microhardness (depths 10, 30, 50, 70, 90, 110 and 220 µm). Data were tested using ANOVA and Tukey’s test (a=5%). Results of erosive evaluation showed that Biosilicate promoted the lowest (p<0.05) values of surface loss, regardless of time, for both enamel and dentin; APF promoted lower (p<0.05) surface loss than control; analyzing different periods of time, APF did not show difference (p>0.05) between 14 and 21 days of demineralization. Results of enamel caries assessment showed that Biosilicate resulted in higher (p<0.05) surface and subsurface microhardness than both APF and control-applications. It may be concluded that Biosilicate application showed a higher potential to reduce surface loss and development of erosion and caries lesions.
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Salomão PMA, de Oliveira FA, Rodrigues PD, Al-Ahj LP, Gasque KCDS, Jeggle P, Buzalaf MAR, de Oliveira RC, Edwardson JM, Magalhães AC. The cytotoxic effect of TiF4 and NaF on fibroblasts is influenced by the experimental model, fluoride concentration and exposure time. PLoS One 2017; 12:e0179471. [PMID: 28614381 PMCID: PMC5470716 DOI: 10.1371/journal.pone.0179471] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 05/31/2017] [Indexed: 11/29/2022] Open
Abstract
Objective Titanium tetrafluoride (TiF4) has shown promising effect in preventing tooth lesions. Therefore, we compared the cytotoxicity of TiF4 with sodium fluoride (NaF) (already applied in Dentistry) considering different fluoride concentrations, pH values and experimental models. Materials and methods Step 1) NIH/3T3 fibroblasts were exposed to mediums containing NaF or TiF4 (from 0.15 to 2.45% F), both at native and adjusted pH, for 6 h. Step 2) NIH/3T3 were exposed to NaF or TiF4 varnishes with 0.95, 1.95 or 2.45% F (native pH), for 6, 12 or 24 h. We applied MTT (1st and 2nd steps) and Hoescht/PI stain (2nd step) assays. Step 3) NIH/3T3 were exposed to NaF or TiF4 varnish (2.45% F), at native pH, for 6 or 12 h. The cell stiffness was measured by atomic force microscopy (AFM). Results Step 1) All cells exposed to NaF or TiF4 mediums died, regardless of the F concentration and pH. Step 2) Both varnishes, at 1.90 and 2.45% F, reduced cell viability by similar extents (33–86% at 6 h, 35–93% at 12 h, and 87–98% at 24 h) compared with control, regardless of the type of fluoride. Varnishes with 0.95% F did not differ from control. Step 3) TiF4 and NaF reduced cell stiffness to a similar extent, but only TiF4 differed from control at 6 h. Conclusions Based on the results of the 3 experimental steps, we conclude that TiF4 and NaF have similar cytotoxicity. The cytotoxicity was dependent on F concentration and exposure time. This result gives support for testing the effect of TiF4 varnish in vivo.
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Affiliation(s)
| | - Flávia Amadeu de Oliveira
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Paula Danielle Rodrigues
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | - Luana Polioni Al-Ahj
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | | | - Pia Jeggle
- Department of Pharmacology, University of Cambridge, Cambridge, United Kingdom
| | | | - Rodrigo Cardoso de Oliveira
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
| | | | - Ana Carolina Magalhães
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil
- * E-mail:
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Kandanuru V, Madhusudhana K, Ramachandruni VK, Vitta HM, Babu L. Comparative evaluation of microhardness of dentin treated with 4% titanium tetrafluoride and 1.23% acidic phosphate fluoride gel before and after exposure to acidic pH: An ex vivo study. J Conserv Dent 2016; 19:560-563. [PMID: 27994319 PMCID: PMC5146773 DOI: 10.4103/0972-0707.194032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
AIM The aim of this study was to comparatively evaluate the effect of 4% titanium tetrafluoride (TiF4) and 1.23% acidic phosphate fluoride (APF) gel on the microhardness of human coronal dentin. MATERIALS AND METHODS Thirty noncarious extracted premolars were collected and sectioned buccolingually with the help of diamond disk. Exposing the sectioned surface, teeth were embedded in self-cure acrylic. Exposed coronal dentin was polished with abrasive papers starting with 220-5000 grit. Microhardness was evaluated by Vickers microhardness evaluator, at four different stages as follows - stage 1: Baseline values, Stage 2: Exposure of specimens to acidic environment at a pH 1 for 5 min, Stage 3: Application of 1.23% APF gel and 4% TiF4 (after dividing the specimens into two groups, i.e., Group A and B, respectively), and Stage 4: Followed by exposure of fluoridated specimens to acidic protocol as mentioned above. RESULTS Paired t-test was used to compare the readings between Groups A and B. Group B has shown greater resistance to decrease in microhardness of coronal dentin (P < 0.05) on exposure to acidic protocol. CONCLUSION Due to acidic pH (1.5) of 4% TiF4, amount of increase in microhardness of dentin is <1.23% APF gel. 4% TiF4 was more effective in resisting demineralization than 1.23% APF gel.
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Affiliation(s)
- Vivek Kandanuru
- Department of Conservative Dentistry and Endodontics, Narayana Dental College, Nellore, Andhra Pradesh, India
| | - Koppolu Madhusudhana
- Department of Conservative Dentistry and Endodontics, Narayana Dental College, Nellore, Andhra Pradesh, India
| | - Vamsi Krishna Ramachandruni
- Department of Conservative Dentistry and Endodontics, Narayana Dental College, Nellore, Andhra Pradesh, India
| | | | - Lenin Babu
- Department of Conservative Dentistry and Endodontics, Narayana Dental College, Nellore, Andhra Pradesh, India
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Teixeira L, Manarte-Monteiro P, Manso MC. Enamel lesions: Meta-analysis on effect of prophylactic/therapeutic agents in erosive tissue loss. J Dent Sci 2016; 11:215-224. [PMID: 30894976 PMCID: PMC6395268 DOI: 10.1016/j.jds.2016.03.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 09/25/2015] [Indexed: 11/19/2022] Open
Abstract
This study aims to perform a meta-analysis on the effect of prophylactic/therapeutic agents in enamel tissue loss due to erosion. A paper search was done on Medline, PubMed, Embase, and Cochrane Library, and 732 papers were identified. The inclusion criteria were very restrictive in order to be able to compare different protocols and methodologies used on those studies. Sixteen papers were eligible, grouped according to the measurement method of enamel tissue loss, and a meta-analysis was done for each type of fluoride- and casein-based agent applied. Standardized mean differences were pooled across studies. There was a significant difference between all the treatment groups and their respective control groups. The highest standardized mean difference on enamel tissue loss (mean; 95% confidence interval) was obtained by stannous fluoride (4.789 μm; 1.968-7.610; P < 0.001), followed by amine fluoride (2.485 μm; 0.746-4.225; P < 0.010), and titanium tetrafluoride (1.787 μm; 1.106-2.469; P < 0.001); the lowest difference was obtained by casein phosphopeptide-amorphous calcium phosphate (0.869 μm; 0.007-1.731; P < 0.050) and sodium fluoride (0.820 μm; 0.417-1.223; P < 0.001). Stannous fluoride as a fluoride-based prophylactic/therapeutic agent allowed the lowest enamel tissue loss in erosive conditions. Standardization among future study protocols will allow better comparison regarding the prophylactic/therapeutic agent with the best clinical efficacy.
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Affiliation(s)
- Liliana Teixeira
- Conservative and Restorative Dentistry, Department of Medical Sciences, Faculty of Health Sciences, University Fernando Pessoa, Porto, Portugal
| | - Patrícia Manarte-Monteiro
- Conservative and Restorative Dentistry, Department of Medical Sciences, Faculty of Health Sciences, University Fernando Pessoa, Porto, Portugal
| | - Maria Conceição Manso
- Biostatistics, Faculty of Health Sciences, FP-ENAS, University Fernando Pessoa, Porto, Portugal
- REQUIMTE, University of Porto, Porto, Portugal
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18
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Yönel N, Bikker FJ, Lagerweij MD, Kleverlaan CJ, van Loveren C, Özen B, Çetiner S, van Strijp AJP. Anti-erosive effects of fluoride and phytosphingosine: an in vitro study. Eur J Oral Sci 2016; 124:396-402. [DOI: 10.1111/eos.12283] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2016] [Indexed: 12/01/2022]
Affiliation(s)
- Nermin Yönel
- Department of Paediatric Dentistry; Faculty of Dentistry; Near East University; Nicosia Cyprus
- Department of Cariology Endodontology Pedodontology; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and VU University; Amsterdam the Netherlands
| | - Floris J. Bikker
- Department of Oral Biochemistry; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and VU University; Amsterdam the Netherlands
| | - Maxim D. Lagerweij
- Department of Cariology Endodontology Pedodontology; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and VU University; Amsterdam the Netherlands
| | - Cees J. Kleverlaan
- Department of Dental Materials Science; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and VU University; Amsterdam the Netherlands
| | - Cor van Loveren
- Department of Cariology Endodontology Pedodontology; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and VU University; Amsterdam the Netherlands
| | - Bugra Özen
- Department of Cariology Endodontology Pedodontology; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and VU University; Amsterdam the Netherlands
| | - Serap Çetiner
- Department of Paediatric Dentistry; Faculty of Dentistry; Near East University; Nicosia Cyprus
| | - Augustinus J. P. van Strijp
- Department of Cariology Endodontology Pedodontology; Academic Centre for Dentistry Amsterdam (ACTA); University of Amsterdam and VU University; Amsterdam the Netherlands
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Altinci P, Mutluay M, Seseogullari-Dirihan R, Pashley D, Tjäderhane L, Tezvergil-Mutluay A. NaF Inhibits Matrix-Bound Cathepsin-Mediated Dentin Matrix Degradation. Caries Res 2016; 50:124-32. [DOI: 10.1159/000444222] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 01/24/2016] [Indexed: 11/19/2022] Open
Abstract
Matrix metalloproteinases (MMPs) and cysteine cathepsins (CCs) degrade the collagen fibrils of demineralized dentin. Sodium fluoride (NaF) has previously been shown to inhibit recombinant MMP-2 and MMP-9. This study aimed to evaluate the efficacy of NaF on the inhibition of dentin-bound MMPs and CCs. Dentin beams were completely demineralized in 10% phosphoric acid. The baseline total MMP activity and dry masses were measured. Beams were assigned to test groups based on similar MMP activity and dry mass (n = 10/group), and incubated in artificial saliva (control) or artificial saliva with NaF containing 6-238 mM fluoride for 1, 7 and 21 days. The dry mass loss and MMP activities were reassessed at each time point. The proteolytic activity was screened by gelatin zymography. ICTP and CTX released to the incubation medium were analyzed as indices of MMP and cathepsin K activity, respectively. The beams were examined under scanning electron microscopy. All NaF doses reduced the dry mass loss after 21 days (p < 0.05). NaF inhibition of the total MMP activity ranged between 5 and 80%. In gelatin zymography, the bands of MMP-2 and MMP-9 became less prominent with increasing NaF levels. NaF did not decrease the released ICTP (p > 0.05). Less CTX release was detected with F ≥179 mM (p < 0.05). CaF2-like minerals were observed on the beams. High levels of NaF may slow the degradation of the dentin matrix due to the inhibition of cathepsin K. Fluoride does not seem effective in the direct inhibition of proteolysis by dentin matrix-bound MMPs.
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Nehme M, Jeffery P, Mason S, Lippert F, Zero DT, Hara AT. Erosion Remineralization Efficacy of Gel-to-Foam Fluoride Toothpastes in situ: A Randomized Clinical Trial. Caries Res 2016; 50:62-70. [DOI: 10.1159/000443187] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 08/13/2015] [Indexed: 11/19/2022] Open
Abstract
This single-center, randomized, placebo-controlled, four-treatment, four-period crossover study compared the enamel remineralization effects of low- and medium-abrasivity gel-to-foam toothpastes and a reference toothpaste (all 1,450 ppm fluoride as NaF) versus placebo toothpaste (0 ppm fluoride) using a short-term in situ erosion model. Subjects (n = 56) wearing a palatal appliance holding acid-softened bovine enamel specimens brushed their teeth with the test toothpastes. Thereafter, the specimens were removed for analysis of percent surface microhardness recovery (%SMHR) and percent relative erosion resistance (%RER) at 2, 4, and 8 h. Both low- and medium-abrasivity gel-to-foam fluoride toothpastes and the reference toothpaste provided significantly greater %SMHR than placebo at all assessment time points (all p < 0.05). No statistically significant difference of %SMHR was observed between the fluoride treatment groups at any time point. Similarly, all fluoride products provided significantly superior %RER versus placebo (all p < 0.0001), whereas no significant difference of this parameter was noted between the fluoride treatment groups. Increasing numerical improvements of %SMHR and %RER were observed in all four treatment groups over time (2, 4, and 8 h). The present in situ model is a sensitive tool to investigate intrinsic and fluoride-enhanced rehardening of eroded enamel. All three fluoride toothpastes were more efficacious than placebo, and there were no safety concerns following single dosing in this short-term in situ model.
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Zhao X, Pan J, Malmstrom HS, Ren YF. Protective effects of resin sealant and flowable composite coatings against erosive and abrasive wear of dental hard tissues. J Dent 2016; 49:68-74. [PMID: 26836703 DOI: 10.1016/j.jdent.2016.01.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 01/18/2016] [Accepted: 01/27/2016] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVES To test the effectiveness of sealant and flowable composite coating on eroded enamel, dentin and cementum under erosive/abrasive challenges in vitro. METHODS A total of 108 tissue sections (36 each for enamel, dentin and cementum) from third molars were assigned to three groups: Seal & Protect sealant (S&P), Tetric EvoFlow composite (TEF) and control. Erosive/abrasive lesions were created on each specimen by citric acid and brushing with toothpaste. S&P and TEF were applied to the lesions and subjected to erosive/abrasive cycling included 24 cycles of immersion in citric acid (pH 3.6) for 60min, followed by remineralization for 120min and brushing with toothpastes for 600 strokes at 150g. Erosive wear of materials or dental tissues were measured with 3D scanning microscopy and data were analyzed using ANOVA. RESULTS Treatments with S&P and TEF created a protective material coating of 42.7±17.8μm and 150.8±9.9μm in thickness, respectively. After 24 cycles of erosive/abrasive challenges, tissue losses were -346.9±37.3μm for enamel, -166.5±26.3μm for dentin and -164.7±18.2μm for cementum in untreated controls, as compared to material losses of -24.4±3.3μm for S&P, and -10.8±4.4μm for TEF, respectively. Both S&P and TEF were effective in protecting enamel, dentin and cementum against erosive tooth wear (p<0.01). S&P exhibited faster wear than TEF (p<0.01) and showed spotted peeling in a third of the specimens. TEF remained intact on all three types of dental tissues at the end of the 24 cycles of erosive/abrasive challenges. CONCLUSIONS A thin coating of flowable composite resin 150μm in thickness may provide long-term protection against erosive/abrasive tooth wear. Resin sealant may provide adequate protection for dental hard tissues in short-term and may require repeated applications if long-term protection is desired.
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Affiliation(s)
- Xiaoyi Zhao
- Department of General Dentistry, Peking University School of Stomatology, Beijing, China; Department of General Dentistry, University of Rochester Eastman Institute for Oral Health, Rochester, NY, USA
| | - Jie Pan
- Department of General Dentistry, Peking University School of Stomatology, Beijing, China
| | - Hans S Malmstrom
- Department of General Dentistry, University of Rochester Eastman Institute for Oral Health, Rochester, NY, USA
| | - Yan-Fang Ren
- Department of General Dentistry, University of Rochester Eastman Institute for Oral Health, Rochester, NY, USA.
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Inhibition of demineralization around the enamel-dentin/restoration interface after dentin pretreatment with TiF4 and self-etching adhesive systems. Clin Oral Investig 2015; 20:857-63. [DOI: 10.1007/s00784-015-1573-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 08/18/2015] [Indexed: 11/26/2022]
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Comar LP, Cardoso CDAB, Charone S, Grizzo LT, Buzalaf MAR, Magalhães AC. TiF4 and NaF varnishes as anti-erosive agents on enamel and dentin erosion progression in vitro. J Appl Oral Sci 2015; 23:14-8. [PMID: 25760263 PMCID: PMC4349114 DOI: 10.1590/1678-775720140124] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 07/29/2014] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE This study assessed the effect of fluoride varnishes on the progression of tooth erosion in vitro. MATERIAL AND METHODS Forty-eight enamel and 60 root dentin samples were previously demineralized (0.1% citric acid, pH 2.5, 30 min), leading to a baseline and erosive wear of 12.9 and 11.4 µm, respectively. The samples were randomly treated (6 h) with a 4% TiF4 varnish (2.45%F-, pH 1.0), a 5.42% NaF varnish (2.45%F-, pH 5.0), a placebo varnish and no varnish (control). The samples were then subjected to erosive pH cycles (4x90 s/day in 0.1% citric acid, intercalated with artificial saliva) for 5 days. The increment of the erosive tooth wear was calculated. In the case of dentin, this final measurement was done with and without the demineralized organic matrix (DOM). Enamel and dentin data were analyzed using ANOVA/Tukey's and Kruskal-Wallis/Dunn tests, respectively (p<0.05). RESULTS The TiF4 (mean±s.d: 1.5±1.1 µm) and NaF (2.1±1.7 µm) varnishes significantly reduced enamel wear progression compared to the placebo varnish (3.9±1.1 µm) and control (4.5±0.9 µm). The same differences were found for dentin in the presence and absence of the DOM, respectively: TiF4 (average: 0.97/1.87 µm), NaF (1.03/2.13 µm), placebo varnish (3.53/4.47 µm) and control (3.53/4.36 µm). CONCLUSION The TiF4 and NaF varnishes were equally effective in reducing the progression of tooth erosion in vitro.
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Affiliation(s)
- Livia Picchi Comar
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | | | - Senda Charone
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | - Larissa Tercilia Grizzo
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
| | | | - Ana Carolina Magalhães
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
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Lepri TP, Colucci V, Turssi CP, Corona SAM. In situ investigation of the effect of TiF4 and CO2 laser irradiation on the permeability of eroded enamel. Arch Oral Biol 2015; 60:941-7. [PMID: 25835379 DOI: 10.1016/j.archoralbio.2015.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 01/03/2015] [Accepted: 02/08/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Interest in erosion and its role in tooth wear has increased considerably. Due to the limited contribution of patients in modifying their dietary habits, therapeutic resources aiming to reduce the progression of erosion-like lesions have been discussed. This study sought to evaluate the effect of TiF4 and CO2 laser in controlling the permeability of in situ eroded enamel. DESIGN Ten volunteers wore an intraoral palatal device containing two enamel slabs, treated with TiF4 gel and TiF4 gel + CO2 or placebo gel and placebo gel + CO2. After the washout period, volunteers were crossed over to the other treatment. During both phases, specimens were submitted to erosive challenges and then evaluated for permeability measured as the percentage of copper ion penetration over the total enamel thickness. RESULTS Two-way analysis of variance (ANOVA) revealed that there was a significant interaction between the factors under study (p = 0.0002). Tukey's test showed that TiF4 significantly reduced the enamel permeability of eroded enamel specimens, regardless of whether CO2 laser irradiation was performed. CONCLUSIONS It may be concluded that when the placebo gel was applied, CO2 laser was able to reduce enamel permeability; however, when TiF4 was applied, laser irradiation did not imply a reduction in permeability. TiF4 provided a lower permeability of eroded enamel, regardless of whether the CO2 laser was used.
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Affiliation(s)
- Taísa Penazzo Lepri
- Ribeirão Preto School of Dentistry - USP, Department of Restorative Dentistry, Av. do Café, S/N Monte Alegre, CEP 14040-904, Ribeirão Preto, São Paulo, Brazil.
| | - Vivian Colucci
- Dental School, University of Ribeirão Preto, Avenida Costábile Romano, 2201, Ribeirânia, CEP 14096-900, Ribeirão Preto, São Paulo, Brazil.
| | - Cecília Pedroso Turssi
- São Leopoldo Mandic Institute and Dental Research Center, Department of Restorative Dentistry, Av. José Rocha Junqueira, 13, CEP 13045-755, Campinas, São Paulo, Brazil.
| | - Silmara Aparecida Milori Corona
- Ribeirão Preto School of Dentistry - USP, Department of Restorative Dentistry, Av. do Café, S/N Monte Alegre, CEP 14040-904, Ribeirão Preto, São Paulo, Brazil.
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Hjortsjö C, Jonski G, Young A, Saxegaard E. Etching effect of acidic fluorides on human tooth enamel in vitro. Arch Oral Biol 2014; 59:1328-33. [PMID: 25178018 DOI: 10.1016/j.archoralbio.2014.08.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 08/05/2014] [Accepted: 08/11/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE This in vitro study aimed to examine the etching effect of acidic fluoride solutions on enamel. MATERIALS AND METHODS 24 human teeth divided into 48 enamel-specimens were partly isolated with impression material. Specimens were exposed for 10 min to 20ml of the following solutions: 1.6% TiF4, 3.9% SnF2, 0.2% HF and 1.8% citric acid (CA). The isolation was removed and 24 specimens analysed by profilometry (Δheight: exposed/isolated enamel surfaces, surface roughness parameters). For the remaining 24 specimens [Ca(2+)] in the test solutions was analysed by atomic absorption spectroscopy. RESULTS Median Δheights (μm) after exposure were: TiF4 0.07, SnF2 -0.03, HF -0.14 and CA -5.92. TiF4-exposed surfaces showed both deposits and etched areas and exhibited statistically significant different surface roughness parameters compared to the HF- and SnF2-exposed surfaces. Median [Ca(2+)] values (ppm): TiF4 1.88, SnF2 0.11, HF 0.10 and CA 2.17. CONCLUSION At the [F] tested in this study it can be concluded that SnF2- and HF solutions had negligible erosive effects on enamel. TiF4 solution resulted in an incomplete surface deposition associated with calcium dissolution suggesting that TiF4 applied as solution may not be advisable.
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Affiliation(s)
- Carl Hjortsjö
- Department of Prosthetic Dentistry and Oral Function, Faculty of Dentistry, University of Oslo, P.O. Box 1109, Blindern, 0317 Oslo, Norway.
| | - Grazyna Jonski
- Oral Research Laboratory, Faculty of Dentistry, University of Oslo, P.O. Box 1109, Blindern, 0317 Oslo, Norway
| | - Alix Young
- Department of Cariology and Gerodontology, Faculty of Dentistry, University of Oslo, P.O. Box 1109, Blindern, 0317 Oslo, Norway
| | - Erik Saxegaard
- Department of Prosthetic Dentistry and Oral Function, Faculty of Dentistry, University of Oslo, P.O. Box 1109, Blindern, 0317 Oslo, Norway
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Basting RT, Leme AA, Bridi EC, Amaral FLBD, França FMG, Turssi CP, Bedran-Russo AK. Nanomechanical properties, SEM, and EDS microanalysis of dentin treated with 2.5% titanium tetrafluoride, before and after an erosive challenge. J Biomed Mater Res B Appl Biomater 2014; 103:783-9. [DOI: 10.1002/jbm.b.33254] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 06/29/2014] [Accepted: 07/15/2014] [Indexed: 12/12/2022]
Affiliation(s)
- Roberta Tarkany Basting
- Department of Restorative Dentistry; São Leopoldo Mandic School of Dentistry and Research Institute; Campinas São Paulo Brazil
| | - Ariene Arcas Leme
- Department of Restorative Dentistry; College of Dentistry, University of Illinois at Chicago; Chicago Illinois
| | - Enrico Coser Bridi
- Department of Restorative Dentistry; São Leopoldo Mandic School of Dentistry and Research Institute; Campinas São Paulo Brazil
| | | | - Fabiana Mantovani Gomes França
- Department of Restorative Dentistry; São Leopoldo Mandic School of Dentistry and Research Institute; Campinas São Paulo Brazil
| | - Cecília Pedroso Turssi
- Department of Cariology ans Statistics; São Leopoldo Mandic Dental School and Research Center; Campinas São Paulo Brazil
| | - Ana Karina Bedran-Russo
- Department of Restorative Dentistry; College of Dentistry, University of Illinois at Chicago; Chicago Illinois
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Calabria M, Porfirio R, Fernandes S, Wang L, Buzalaf M, Pereira JC, Magalhães AC. Comparative In Vitro Effect of TiF4 to NaF and Potassium Oxalate on Reduction of Dentin Hydraulic Conductance. Oper Dent 2014; 39:427-32. [DOI: 10.2341/13-156-l] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Dentin hypersensitivity (DH) is related to an increase in dentin permeability. This study tested the effect of titanium tetrafluoride (TiF4) compared with sodium fluoride (NaF) and potassium oxalate gel on reducing hydraulic conductance (Lp) from the perspective of diminishing dentin permeability. The Lp of the dentin disks (1.0 ± 0.2 mm) was evaluated using Flodec. The maximum Lp values of each disk were taken after phosphoric acid etching (15 seconds) and randomly allocated to seven groups (n=8) according to the treatments. The minimum (smear layer) and the maximum (after acid etching) Lp values were recorded. Treatments were performed for 4 minutes as follows: 1) NaF varnish 2) and solution (2.45% F, pH 5.0), 3) TiF4 varnish and 4) solution (2.45% F, pH 1.0), 5) 3% potassium oxalate gel, 6) free fluoride varnish (placebo, pH 5.0), 7) and no treatment (control). The Lp after each treatment was assessed. Samples were exposed to an erosive challenge (6% citric acid, pH 2.1, 1 minute), and the final Lp was recorded. The data were statistically analyzed using repeated measures two-way analysis of variance (p<0.05). All treatments were effective in reducing dentin Lp compared with the control immediately after the application. However, only potassium oxalate and NaF varnish significantly differed from placebo varnish (p<0.0001). The same results were found after the erosive challenge. Therefore, the TiF4 was less effective than the NaF varnish and potassium oxalate gel in reducing dentin permeability. Using this experimental model, both NaF varnish and potassium oxalate gel reduced the Lp similarly to the presence of smear layer.
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Affiliation(s)
- M Calabria
- Marcela Calabria, PhD, Bauru School of Dentistry, Operative Dentistry, Endodontics and Dental Materials, Bauru, Brazil
| | - R Porfirio
- Raphaelli Porfirio, DDS, Bauru School of Dentistry, Biological Sciences, Bauru, Brazil
| | - S Fernandes
- Samuel Fernandes, DDS, Bauru School of Dentistry, Biological Sciences, Bauru, Brazil
| | - L Wang
- Linda Wang, PhD, Bauru School of Dentistry, Operative Dentistry, Endodontics and Dental Materials, Bauru, Brazil
| | - M Buzalaf
- Marília Buzalaf, PhD, Bauru School of Dentistry, Biological Sciences, Bauru, Brazil
| | - JC Pereira
- José Carlos Pereira, PhD, Bauru School of Dentistry, Operative Dentistry, Endodontics and Dental Materials, Bauru, Brazil
| | - AC Magalhães
- Ana Carolina Magalhães, PhD, Bauru School of Dentistry, Biological Sciences, Bauru, Brazil
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Sales-Peres ADC, Marsicano JA, Garcia RP, Forim MR, Silva MFDGFD, Sales-Peres SHDC. Effect of natural gel product on bovine dentin erosion in vitro. J Appl Oral Sci 2014; 21:597-600. [PMID: 24473728 PMCID: PMC3891286 DOI: 10.1590/1679-775720130242] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 11/01/2013] [Indexed: 11/22/2022] Open
Abstract
Objective To evaluate the efficacy of Neem (Azadirachta indica)
experimental gel for the prevention of erosive wear on bovine dentin, in
vitro. Material and Methods One hundred dentin blocks were allocated into 5 experimental groups (20 samples
each): C (control group, without gel); CG (control group, only base gel); F
(fluoride gel, 1.23% NaF; pH 4.1, Dentsply; Brazil); N (Neem gel, 10% neem
extract; pH 4.1, manipulation); NF (Neem+fluoride gel, 10% Neem extract and 1.23%
NaF; pH 4.1, manipulation). The blocks were stored in artificial saliva for 24
hours. After this, they were submitted to six alternating re- and demineralization
cycles. The blocks were analyzed for wear (profilometry). The results were
submitted to statistical analysis by ANOVA and Tukey tests (P<0.05). Results The mean wear (±SD, µm) was shown as follows in groups: C (13.09±0.99), CG
(10.60±1.99), F (10.90±1.44), N (12.68±1.13) and NF (10.84±1.65). All gels showed
some preventive action when compared with control group. However, significant
differences were found only between Neem+fluoride gel and fluoride gel. Conclusion A single application of a neem-containing fluoride gel reduced dentin erosion,
thus it is a possible alternative in reducing dental wear. Further research should
investigate the action mechanism and the synergism between them.
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Affiliation(s)
- André de Carvalho Sales-Peres
- University of São Paulo, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Community Health, BauruSP, Brazil
| | - Juliane Avansini Marsicano
- University of São Paulo, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Community Health, BauruSP, Brazil
| | - Rudan Paraíso Garcia
- University of São Paulo, Bauru School of Dentistry, Department of Pediatric Dentistry, Orthodontics and Community Health, BauruSP, Brazil
| | - Moacir Rossi Forim
- Federal University of São Carlos, Laboratory of Natural Products, Department of Chemistry, São CarlosSP, Brazil
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Pancote LP, Manarelli MM, Danelon M, Delbem ACB. Effect of fluoride gels supplemented with sodium trimetaphosphate on enamel erosion and abrasion: in vitro study. Arch Oral Biol 2013; 59:336-40. [PMID: 24581857 DOI: 10.1016/j.archoralbio.2013.12.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 12/11/2013] [Accepted: 12/20/2013] [Indexed: 10/25/2022]
Abstract
OBJECTIVE This in vitro study aims to evaluate the effect of low fluoride (F) gel associate sodium trimetaphosphate (TMP) on erosion with or without abrasion. DESIGN Enamel blocks (4 mm × 4 mm) selected through surface hardness (SH) is divided into five groups (n=12): gel without F and TMP (placebo), gel containing 4500 ppm F (4500), gel containing 4500 ppm F plus TMP5% (4500 TMP5%), gel containing 9000 ppm F (9000), and gel containing 12,300 ppm F (acid gel). Those groups were additionally subdivided into conditions of erosion (Ero) and of erosion plus abrasion (Ero/Abra). The blocks have undergone a single application of gel on the first day of the study. The erosion challenge was produced by Sprite Zero for five minutes four times a day and abrasion was carried out by machine brushing for 15s. After the challenges, the surface hardness (%SH), wear and cross-sectional hardness (ΔKHN) were analyzed. The data were analyzed using a 2-way ANOVA test followed by a Student-Newman-Keuls (p<0.05). RESULTS Lower values of %SH, wear and ΔKHN were observed for erosion challenge (p<0.001). The %SH was lower in groups treated with fluoride gels, differing in the placebo (p<0.05). With addition of TMP to the gel 4500, enamel wear was lower when compared with another groups (p<0.05). CONCLUSION In vitro conditions, the 4500 5%TMP gel showed greatest effect against erosion and erosion/abrasion.
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Affiliation(s)
- L P Pancote
- Faculdade de Odontologia, UNESP - Univ Estadual Paulista, Araçatuba, São Paulo, Brazil
| | - M M Manarelli
- Faculdade de Odontologia, UNESP - Univ Estadual Paulista, Araçatuba, São Paulo, Brazil
| | - M Danelon
- Faculdade de Odontologia, UNESP - Univ Estadual Paulista, Araçatuba, São Paulo, Brazil
| | - A C B Delbem
- Faculdade de Odontologia, UNESP - Univ Estadual Paulista, Araçatuba, São Paulo, Brazil.
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Stenhagen K, Hove L, Holme B, Tveit A. The Effect of Daily Fluoride Mouth Rinsing on Enamel Erosive/Abrasive Wear in situ. Caries Res 2013; 47:2-8. [DOI: 10.1159/000342619] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 08/11/2012] [Indexed: 11/19/2022] Open
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Effect of NaF, SnF(2), and TiF(4) Toothpastes on Bovine Enamel and Dentin Erosion-Abrasion In Vitro. Int J Dent 2012; 2012:134350. [PMID: 23258978 PMCID: PMC3508738 DOI: 10.1155/2012/134350] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 09/12/2012] [Accepted: 10/15/2012] [Indexed: 11/23/2022] Open
Abstract
The aim of this study was to compare the effect of toothpastes containing TiF4, NaF, and SnF2 on tooth erosion-abrasion. Bovine enamel and dentin specimens were distributed into 10 groups (n = 12): experimental placebo toothpaste (no F); NaF (1450 ppm F); TiF4 (1450 ppm F); SnF2 (1450 ppm F); SnF2 (1100 ppm F) + NaF (350 ppm F); TiF4 (1100 ppm F) + NaF (350 ppm F); commercial toothpaste Pro-Health (SnF2—1100 ppm F + NaF—350 ppm F, Oral B); commercial toothpaste Crest (NaF—1.500 ppm F, Procter & Gamble); abrasion without toothpaste and only erosion. The erosion was performed 4 × 90 s/day (Sprite Zero). The toothpastes' slurries were applied and the specimens abraded using an electric toothbrush 2 × 15 s/day. Between the erosive and abrasive challenges, the specimens remained in artificial saliva. After 7 days, the tooth wear was evaluated using contact profilometry (μm). The experimental toothpastes with NaF, TiF4, SnF2, and Pro-Health showed a significant reduction in enamel wear (between 42% and 54%). Pro-Health also significantly reduced the dentin wear. The toothpastes with SnF2/NaF and TiF4/NaF showed the best results in the reduction of enamel wear (62–70%) as well as TiF4, SnF2, SnF2/NaF, and TiF4/NaF for dentin wear (64–79%) (P < 0.05). Therefore, the experimental toothpastes containing both conventional and metal fluoride seem to be promising in reducing tooth wear.
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Hjortsjö C, Saxegaard E, Young A, Dahl JE. In vivo and in vitro irritation testing of low concentrations of hydrofluoric acid. Acta Odontol Scand 2012; 67:360-5. [PMID: 19593680 DOI: 10.1080/00016350903117118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Acidic fluorides are proposed for the treatment of dental erosion. The aim of this study was to examine the irritation properties of dilute hydrofluoric acid (HF) solutions for potential use in the oral cavity. MATERIAL AND METHODS Hen's egg test-chorioallantoic membrane (HET-CAM): The CAM was accessed by careful dissection through the egg shell (n=36, 6 eggs/test solution) and exposed to 300 µl of the HF solutions (0.05%, 0.10%, 0.20%, and 1.0%) under macroscope examination over the course of 5 min. Mean time-to-coagulation and average irritation score were recorded based on appearance of hemorrhage, coagulation, and lysis of the blood vessels in the membrane. Mouse skin test: 60 male mice were randomly divided into 10 groups of 6 animals each (control, 0.05%, 0.10%, 0.20%, and 1.0% HF), shaved on the back, exposed to test solution, and euthanized after 2 h or 24 h. Skin samples were evaluated by light microscopy, scoring epithelial leukocyte infiltration, vascular congestion, and edema. RESULTS HET-CAM: 0.05% HF was slightly irritant, 0.1% HF moderately irritant, 0.2% and 1% HF strongly irritant. 0.1-1% HF solutions were severely irritating on the eye. Mouse skin test: HF concentration was significantly correlated with tissue response, and 24-h exposure to 1% HF solution showed focal erosion of the epithelium and marked localized subepithelial leukocyte infiltration. CONCLUSION The results of the studies suggest that accidental exposure of soft tissues to solutions containing more than 0.2% HF may be harmful.
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Vedovello SAS, Grigoletto M, Vedovello Filho M, Valdrighi HC, Kuramae M. Knoop hardness of enamel and shear bond strength of brackets bonded with composite resin with and without fluoride. Dental Press J Orthod 2012. [DOI: 10.1590/s2176-94512012000400007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE: The aim of this study was to evaluate the Knoop hardness of enamel, shear bond strength and failure pattern (adhesive, bracket/resin interface or mixed) after bonding and debonding brackets, using resin composite with fluoride (Ortho Lite Cure, Ortho Source®) and without fluoride (Orthobond, Morelli®). METHODS: Fragments (6 mm x 6 mm) of 40 bovine incisor crowns were embedded in acrylic self-polymerizing resin. The Knoop hardness measurements were performed before and after bonding metal brackets. The specimens were divided into two groups, according to composite resin: with fluoride (Ortho Lite Cure, Ortho Source®) and without fluoride (Orthobond, Morelli®). After bonding, the specimens were submitted to demineralization and remineralization cycling for 14 days. Shear bond strength testing was performed in a universal test machine (EMIC), at 5 mm/min crosshead speed. RESULTS: There was no significant difference in shear bond strength between Groups I and II. After demineralization and remineralization procedures (DE/RE), the specimens bonded with Ortho Lite Cure showed higher Knoop hardness than Orthobond. For both groups there was predominance of failure at bracket/resin interface. CONCLUSION: specimens bonded with fluoride resin composite showed higher microhardness after DE/RE cycling than those bonded with resin composite without fluoride, although no difference in shear bond strength was found.
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Lepri TP, Colucci V, Turssi CP, Corona SAM. Permeability of eroded enamel following application of different fluoride gels and CO2 laser. Lasers Med Sci 2012; 28:235-40. [PMID: 22639231 DOI: 10.1007/s10103-012-1123-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Accepted: 05/07/2012] [Indexed: 10/28/2022]
Abstract
This study evaluated the combined effect of fluoride compounds and CO(2) laser in controlling the permeability of eroded enamel. Bovine enamel slabs (3 × 2 mm) were cycled twice through an alternating erosion and remineralization regimen. Slabs were immersed in 20 ml of orange juice (pH 3.84) for 5 min under agitation, rinsed with deionized water, and stored in artificial saliva for 4 h to form erosive lesions. Specimens were then divided into four groups (n = 10), which were treated for 1 min with either a control or with one of the following gels: amine fluoride (AmF), titanium tetrafluoride (TiF(4)), or sodium fluoride (NaF). Half of the specimens were irradiated with a CO(2) laser (λ = 10.6 μm; 2.0 W). Specimens were cycled two more times through the aforementioned erosion-remineralization regimen and were subjected to permeability assessment. ANOVA demonstrated a significant interaction between fluoride and laser treatment (p = 0.0152). Tukey's test showed that when fluoride was applied alone, TiF(4) resulted in lower enamel permeability than that observed after application of the placebo gel. Intermediate permeability values were noted after NaF and AmF had been used. A significant reduction in enamel permeability was obtained when fluoride was combined with CO(2) laser treatment, with no difference between fluoride gels. Permeability of eroded enamel may be reduced by combining the application of fluoride gels with CO(2) laser irradiation.
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Affiliation(s)
- Taísa Penazzo Lepri
- Department of Restorative Dentistry, Ribeirão Preto School of Dentistry-USP, Avenida do Café, SN Monte Alegre, CEP 14040-904, Ribeirão Preto, São Paulo, Brazil.
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Magalhães AC, Levy FM, Rizzante FA, Rios D, Buzalaf MAR. Effect of NaF and TiF(4) varnish and solution on bovine dentin erosion plus abrasion in vitro. Acta Odontol Scand 2012; 70:160-4. [PMID: 21780973 DOI: 10.3109/00016357.2011.600711] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES This in vitro study aimed to analyze the effect of TiF(4) compared to NaF varnishes and solutions, to protect against dentin erosion associated with abrasion. MATERIALS AND METHODS Bovine dentin specimens were pre-treated with NaF-Duraphat (2.26% F), NaF/CaF(2)-Duofluorid (5.63% F), experimental-NaF (2.45% F), experimental-TiF(4) (2.45% F) and placebo varnishes; NaF (2.26% F) and TiF(4) (2.45% F) solutions. Controls remained untreated. The erosive pH cycling was performed using a soft drink (pH 2.6) 4 × 90 s/day and the toothbrushing-abrasion 2 × 10 s/day, in vitro for 5 days. Between the challenges, the specimens were exposed to artificial saliva. Dentin tissue loss was measured profilometrically (μm). RESULTS ANOVA/Tukey's test showed that all fluoridated varnishes (Duraphat, 7.5 ± 1.1; Duofluorid, 6.8 ± 1.1; NaF, 7.2 ± 1.9; TiF(4), 6.5 ± 1.0) were able to significantly reduce dentin tissue loss (40.7% reduction compared to control) when compared to placebo varnish (11.2 ± 1.3), control (11.8 ± 1.7) and fluoridated (NaF, 9.9 ± 1.8; TiF(4), 10.3 ± 2.1) solutions (p < 0.0001), which in turn did not significantly differ from each other. CONCLUSION All fluoridated varnishes, but not the solutions, had a similar performance and a good potential to reduce dentin tissue loss under mild erosive and abrasive conditions in vitro. Risk patients for erosion and abrasion, especially those with exposed dentin, should benefit from this clinical preventive measure. Further research has to confirm this promising result in the clinical situation.
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Affiliation(s)
- Ana Carolina Magalhães
- Department of Biological Sciences, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo–Bauru, SP, Brazil.
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Levy FM, Magalhães AC, Gomes MF, Comar LP, Rios D, Buzalaf MAR. The erosion and abrasion-inhibiting effect of TiF(4) and NaF varnishes and solutions on enamel in vitro. Int J Paediatr Dent 2012; 22:11-6. [PMID: 21689178 DOI: 10.1111/j.1365-263x.2011.01151.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE. Previous in vitro study has shown that TiF(4) varnish might reduce enamel erosion. No data regarding the effect of this experimental varnish on enamel erosion plus abrasion, however, are available so far. Thus, this in vitro study aimed to analyse the effect of TiF(4) compared with NaF varnishes and solutions, to protect against enamel erosion with or without abrasion. METHODS. Enamel specimens were pre-treated with experimental-TiF(4) (2.45% F), experimental-NaF (2.45% F), NaF-Duraphat (2.26% F), and placebo varnishes; NaF (2.26% F) and TiF(4) (2.45% F) solutions. Controls remained untreated. The erosive challenge was performed using a soft drink (pH 2.6) 4 × 90 s/day (ERO) and the toothbrushing abrasion (ERO+ABR) 2 × 10 s/day, for 5 days. Between the challenges, the specimens were exposed to artificial saliva. Enamel loss was measured profilometrically (μm). RESULTS. Kruskal-Wallis/Dunn tests showed that all fluoridated varnishes (TiF(4) -ERO:0.53 ± 0.20, ERO+ABR:0.65 ± 0.19/NaF-ERO:0.94 ± 0.18, ERO+ABR:1.74 ± 0.37/Duraphat-ERO:1.00 ± 0.37, ERO+ABR:1.72 ± 0.58) were able to significantly reduce enamel loss when compared with placebo varnish (ERO:3.45 ± 0.41/ERO+ABR:3.20 ± 0.66) (P < 0.0001). Placebo varnish, control (ERO:2.68 ± 0.53/ERO+ABR:3.01 ± 0.34), and fluoridated (NaF-ERO:2.84 ± 0.09/ERO+ABR:2.40 ± 0.21/TiF(4) -ERO:3.55 ± 0.59/ERO+ABR:4.10 ± 0.38) solutions did not significantly differ from each other. CONCLUSION. Based on the results, it can be concluded that the TiF(4) varnish seems to be a promising treatment to reduce enamel loss under mild erosive and abrasive conditions in vitro.
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Affiliation(s)
- Flávia Mauad Levy
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
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Wahengbam P, Tikku AP, Lee WB. Role of titanium tetrafluoride (TiF(4)) in conservative dentistry: A systematic review. J Conserv Dent 2011; 14:98-102. [PMID: 21814345 PMCID: PMC3146121 DOI: 10.4103/0972-0707.82598] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2010] [Revised: 06/22/2010] [Accepted: 09/13/2010] [Indexed: 11/18/2022] Open
Abstract
The role of fluoride to reduce demineralization and enhance remineralization of dental hard tissue has been well documented. Different forms of fluoride solutions have been topically used in dentistry as prophylactic agents against tooth decay. In the recent past, metal fluorides, especially titanium tetrafluoride, have become popular in the fraternity of dental research due to their unique interaction with dental hard tissue. Many studies on titanium tetrafluoride, with positive and negative conclusions, have been published in many research journals. This gives the reader a plethora of inconclusive results with one study neutralizing the outcome of other, which confuses us regarding the present status of titanium tetrafluoride in the field of dentistry. This is an endeavor to organize and present the various studies of this unique compound, to provide us with a lucid overall review of its versatile potential application in dentistry, along with its fallacy/drawbacks. We have discussed its role as a cariostatic agent, pit and fissure sealant, tooth desensitizer, against dental erosion, as a root canal irrigant and others.
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Affiliation(s)
- Pragya Wahengbam
- Department of Conservative Dentistry, Chandra Dental College and Hospital, Safedabad, Barabanki, India
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Abstract
Citric acid-induced changes in the structure of the mineral component of enamel stored in artificial saliva were studied by attenuated total reflectance infrared spectroscopy as well as complementary electron probe microanalysis and scanning electron microscopy. The results indicate that the application of artificial saliva for several hours (the minimum time period proved is 4 h) leads to slight, partial recovering of the local structure of eroded enamel apatite. However, artificial saliva surrounding cannot stop the process of loosening and breaking of P–O–Ca atomic linkages in enamel subjected to multiple citric acid treatments. Irreversible changes in the atomic bonding within 700 nm thick enamel surface layer are observed after three times exposure for 1 min to aqueous solution of citric acid having a pH value of 2.23, with a 24-hour interval between the individual treatments. The additional treatment with basic fluoride-containing solutions (1.0% NaF) did not demonstrate a protective effect on the enamel apatite structure per se.
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Schlueter N, Hara A, Shellis R, Ganss C. Methods for the Measurement and Characterization of Erosion in Enamel and Dentine. Caries Res 2011; 45 Suppl 1:13-23. [DOI: 10.1159/000326819] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Magalhães AC, Romanelli AC, Rios D, Comar LP, Navarro RS, Grizzo LT, Aranha ACC, Buzalaf MAR. Effect of a single application of TiF4 and NaF varnishes and solutions combined with Nd:YAG laser irradiation on enamel erosion in vitro. Photomed Laser Surg 2011; 29:537-44. [PMID: 21595551 DOI: 10.1089/pho.2010.2886] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE This in vitro study aimed to analyze the influence of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser irradiation on the efficacy of titanium tetrafluoride (TiF(4)) and sodium fluoride (NaF) varnishes and solutions to protect enamel against erosion. BACKGROUND DATA The effect of Nd:YAG laser irradiation on NaF and AmF was analyzed; however, there is no available data on the interaction between Nd:YAG laser irradiation and TiF(4). METHODS Bovine enamel specimens were pre-treated with NaF varnish, TiF(4) varnish, NaF solution, TiF(4) solution, placebo varnish, Nd:YAG (84.9 J/cm(2)), Nd:YAG prior to or through NaF varnish, Nd:YAG prior to or through TiF(4) varnish, Nd:YAG prior to or through NaF solution, Nd:YAG prior to or through TiF(4) solution, and Nd:YAG prior to or through placebo varnish. Controls remained untreated. Ten specimens in each group were then subjected to an erosive demineralization (Sprite Zero, 4 × 90 s/day) and remineralization (artificial saliva, between the erosive cycles) cycling for 5 days. Enamel loss was measured profilometrically (μm). Additionally, treated but non-eroded specimens were additionally analyzed by scanning electron microscope (SEM) (each group n = 2). The data were statistically analyzed by ANOVA and Tukey's post-hoc test (p < 0.05). RESULTS Only TiF(4) varnish (1.8 ± 0.6 μm), laser prior to TiF(4) varnish (1.7 ± 0.3 μm) and laser prior to TiF(4) solution (1.4 ± 0.3 μm) significantly reduced enamel erosion compared to the control (4.1 ± 0.6 μm). SEM pictures showed that specimens treated with TiF(4) varnish presented a surface coating. CONCLUSIONS Nd:YAG laser irradiation was not effective against enamel erosion and it did not have any influence on the efficacy of F, except for TiF(4) solution. On the other hand, TiF(4) varnish protected against enamel erosion, without the influence of laser irradiation.
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Affiliation(s)
- Ana Carolina Magalhães
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil.
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Vieira AM, Ruben JL, Bronkhorst EM, Huysmans MCDNJM. In vitro reduction of dental erosion by low-concentration TiF4 solutions. Caries Res 2011; 45:142-7. [PMID: 21454977 DOI: 10.1159/000324805] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2010] [Accepted: 01/27/2011] [Indexed: 11/19/2022] Open
Abstract
The aims of this study were to compare daily versus single applications of low-concentration TiF(4) solutions for reduction of enamel erosion and to evaluate the enamel surface loss due to application of these solutions. Sixty bovine enamel samples were randomly divided into 2 groups: single versus daily treatment with TiF(4) solution (ST vs. DT), which were subdivided into 5 subgroups (n = 6): 0% (control); 0.1, 0.5, 0.75 and 1% TiF(4) concentration. Fluoride treatment was performed by immersing specimens in 10 ml of the TiF(4) solutions for 5 min and rinsing them with tap water for 30 s. ST specimens were treated once only, DT specimens were treated before each erosion cycle. All specimens were subjected to 4 erosion cycles: 6 immersions of 2 min in Sprite, tap water rinse for 1 min and storage in artificial saliva for 1.5 h. Erosive enamel loss was measured using light profilometry, after each fluoride treatment and each erosive cycle. The values of surface loss/gain at application of the TiF(4) solutions did not significantly differ from zero. At the end of the 4 erosion cycles, 0.5% showed the least (ST: 3.45 ± 0.27 μm, DT: 1.08 ± 1.69 μm) and 1% showed the most surface loss (ST: 4.87 ± 1.13 μm, DT: 6.56 ± 1.49 μm). A significant reduction of surface loss was found only for 0.5% DT (p = 0.009). Within the limitations of an in vitro study, it was concluded that multiple applications of a 0.5% TiF(4) solution significantly reduced enamel erosion in vitro and caused no enamel loss at application.
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Affiliation(s)
- A M Vieira
- Department of Conservative Dentistry and Periodontology, Centre for Dentistry and Oral Hygiene, University Medical Centre Groningen, University of Groningen, The Netherlands
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Bellamy PG, Prendergast M, Strand R, Yu Z, Day TN, Barker ML, Mussett AJ. Can anti-erosion dentifrices also provide effective plaque control? Int J Dent Hyg 2011; 9:223-8. [PMID: 21356021 PMCID: PMC3170713 DOI: 10.1111/j.1601-5037.2010.00480.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
OBJECTIVE While gingivitis and caries continue to be prevalent issues, there is growing concern about dental erosion induced by dietary acids. An oral hygiene product that protects against all these conditions would be beneficial. This study investigated the potential of two anti-erosion dentifrices to inhibit plaque. METHODS This was a randomized, three-period, two-treatment, double-blind, crossover study evaluating a stannous chloride/sodium fluoride dentifrice (SnCl(2)/NaF, blend-a-med(®) Pro Expert) and a popular anti-erosion dentifrice (NaF, Sensodyne(®) ProNamel(™)). During Period 3, subjects were randomized to repeat one treatment to evaluate any product carryover effects. Each treatment period was 17 days. Test dentifrices were used with a standard manual toothbrush. Digital plaque image analysis (DPIA) was employed at the end of each period to evaluate plaque levels (i) overnight (am prebrush); (ii) post-brushing with the test product (am post-brush); and (iii) mid-afternoon (pm). Analysis was conducted via an objective computer algorithm, which calculated total area of visible plaque. RESULTS Twenty-seven subjects completed the study. At all time points, subjects had statistically significantly (P ≤ 0.0001) lower plaque levels after using the SnCl(2)/NaF dentifrice than the NaF dentifrice. The antiplaque benefit for the SnCl(2)/NaF dentifrice versus the NaF dentifrice was: am prebrush = 26.0%; am post-brushing = 27.9%; pm = 25.7%. CONCLUSIONS The SnCl(2)/NaF dentifrice provided significantly greater daytime and overnight plaque inhibition than the NaF toothpaste. When recommending dentifrice to patients susceptible to dental erosion, clinicians can consider one that also inhibits plaque.
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Affiliation(s)
- P G Bellamy
- Procter & Gamble, London Innovation Centre, Egham, Surrey, UK.
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Manton DJ, Cai F, Yuan Y, Walker GD, Cochrane NJ, Reynolds C, Brearley-Messer LJ, Reynolds EC. Effect of casein phosphopeptide-amorphous calcium phosphate added to acidic beverages on enamel erosion in vitro. Aust Dent J 2011; 55:275-9. [PMID: 20887514 DOI: 10.1111/j.1834-7819.2010.01234.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND To investigate, in vitro, the effect on enamel erosion of the addition of 0.2% w/v casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) to four commercially-available soft drinks, two of which were carbonated. METHODS Enamel specimens (n=27) were sectioned from sound extracted human third molar teeth and polished to a mirror finish. Exposed enamel windows of 1 mm2 were created by painting the surface with acid-resistant nail varnish. Four citric flavoured soft drinks (pH range 2.2 to 2.4) and distilled deionized water (DDW) were tested. Each drink was tested with and without 0.2% CPP-ACP w/v. The specimens were placed into 50 mL of solution at 37 °C for 30 minutes, rinsed and varnish removed. The samples were profiled with a white light profilometer and erosive depths recorded. RESULTS All soft drinks tested caused enamel erosion but adding 0.2% w/v CPP-ACP significantly reduced (p<.05) erosive depth in all test solutions in comparison with the solutions without CPP-ACP. The erosive depths for all solutions with 0.2% CPP-ACP did not differ significantly from those of DDW. CONCLUSIONS Adding CPP-ACP at 0.2% w/v significantly decreased the erosivity of all four soft drinks. The erosivity of the soft drinks with 0.2% CPP-ACP added did not differ significantly from that of distilled water.
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Affiliation(s)
- D J Manton
- Cooperative Research Centre for Oral Health Science, Melbourne Dental School and the Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Victoria
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Evaluation of mouthrinse and dentifrice regimens in an in situ erosion remineralisation model. J Dent 2010; 38 Suppl 3:S37-44. [DOI: 10.1016/s0300-5712(11)70007-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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A comparative evaluation of fluoridated and non-fluoridated mouthrinses using a 5-day cycling enamel erosion model. J Dent 2010; 38 Suppl 3:S21-9. [DOI: 10.1016/s0300-5712(11)70005-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Dündar M, Özcan M, Çömlekoğlu M, Şen B. Nanoleakage Inhibition Within Hybrid Layer Using New Protective Chemicals and Their Effect on Adhesion. J Dent Res 2010; 90:93-8. [DOI: 10.1177/0022034510382547] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hybrid-layer degradation occurs because of acidic properties of currently used adhesive systems. Titanium tetrafluoride couples with tooth surface, and titanium compounds are not substituted. Caffeic acid phenethyl esther inhibits endogenous matrix metalloproteinases that cause hybrid-layer degradation. It was hypothesized that titanium tetrafluoride and caffeic acid phenethyl esther application on exposed dentine surfaces before adhesive applications would inhibit nanoleakage and hybrid-layer degradation without compromising the bond strength of the adhesives. In ultracut thin sections, human dentine–chemical agent–adhesive composite interfaces were observed under transmission electron microscope with complementary scanning electron microscopy. Microtensile bond strength tests were also accomplished. Titanium tetrafluoride and titanium tetrafluoride + caffeic acid phenethyl esther applications decreased bond strength values. Caffeic acid phenethyl esther showed decreased silver nitrate penetration for cements based on Bisphenol glycydilmethacrylate and methyl methacrylate, whereas cement based on 4-methacryloyloxyethyl trimellitate anhydride methyl methacrylate showed almost no infiltration. Caffeic acid phenethyl esther application before cementation could inhibit nanoleakage and biodegradation of the hybrid layer.
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Affiliation(s)
- M. Dündar
- Department of Prosthodontics, School of Dentistry, University of Ege, İzmir, Turkey
| | - M. Özcan
- Clinic for Fixed and Removable Prosthodontics and Dental Materials Science, Dental Materials Unit, Center for Dental and Oral Medicine, University of Zurich, Zurich, Switzerland
| | - M.E. Çömlekoğlu
- Department of Prosthodontics, School of Dentistry, University of Ege, İzmir, Turkey
| | - B.H. Şen
- Ege University School of Dentistry, Izmir, Turkey
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Yu H, Wegehaupt FJ, Zaruba M, Becker K, Roos M, Attin T, Wiegand A. Erosion-inhibiting potential of a stannous chloride-containing fluoride solution under acid flow conditions in vitro. Arch Oral Biol 2010; 55:702-5. [DOI: 10.1016/j.archoralbio.2010.06.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 06/03/2010] [Accepted: 06/14/2010] [Indexed: 11/24/2022]
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Wiegand A, Magalhães AC, Navarro RS, Schmidlin PR, Rios D, Buzalaf MAR, Attin T. Effect of titanium tetrafluoride and amine fluoride treatment combined with carbon dioxide laser irradiation on enamel and dentin erosion. Photomed Laser Surg 2010; 28:219-26. [PMID: 19795997 DOI: 10.1089/pho.2009.2551] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE This in vitro study aimed to analyze the influence of carbon dioxide (CO(2)) laser irradiation on the efficacy of titanium tetrafluoride (TiF(4)) and amine fluoride (AmF) in protecting enamel and dentin against erosion. METHODS Bovine enamel and dentin samples were pretreated with carbon dioxide (CO(2)) laser irradiation only (group I), TiF(4) only (1% F, group II), CO(2) laser irradiation before (group III) or through (group IV) TiF(4) application, AmF only (1% F, group V), or CO(2) laser irradiation before (group VI) or through (group VII) AmF application. Controls remained untreated. Ten samples of each group were then subjected to an erosive demineralization and remineralization cycling for 5 days. Enamel and dentin loss were measured profilometrically after pretreatment, 4 cycles (1 day), and 20 cycles (5 days) and statistically analyzed using analysis of variance and Scheffe's post hoc tests. Scanning electron microscopy (SEM) analysis was performed in pretreated but not cycled samples (two samples each group). RESULTS After 20 cycles, there was significantly less enamel loss in groups V and IV and significantly less dentin loss in group V only. All other groups were not significantly different from the controls. Lased surfaces (group I) appeared unchanged in the SEM images, although SEM images of enamel but not of dentin showed that CO(2) laser irradiation affected the formation of fluoride precipitates. CONCLUSION AmF decreased enamel and dentin erosion, but CO(2) laser irradiation did not improve its efficacy. TiF(4) showed only a limited capacity to prevent erosion, but CO(2) laser irradiation significantly enhanced its ability to reduce enamel erosion.
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Affiliation(s)
- Annette Wiegand
- Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zürich, Zürich, Switzerland.
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Austin RS, Rodriguez JM, Dunne S, Moazzez R, Bartlett DW. The effect of increasing sodium fluoride concentrations on erosion and attrition of enamel and dentine in vitro. J Dent 2010; 38:782-7. [PMID: 20600557 DOI: 10.1016/j.jdent.2010.06.009] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 06/22/2010] [Accepted: 06/22/2010] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVES To investigate the effect of an aqueous sodium fluoride solution of increasing concentration on erosion and attrition of enamel and dentine in vitro. METHODS Enamel and dentine sections from caries-free human third molars were polished flat and taped (exposing a 3 mm x 3 mm area) before being randomly allocated to 1 of 5 groups per substrate (n=10/gp): G1 (distilled water control); G2 (225 ppm NaF); G3 (1450 ppm NaF); G4 (5000 ppm NaF); G5 (19,000 ppm NaF). All specimens were subjected to 5, 10 and 15 cycles of experimental wear [1 cycle=artificial saliva (2h, pH 7.0)+erosion (0.3% citric acid, pH 3.2, 5 min)+fluoride/control (5 min)+attrition (60 linear strokes in artificial saliva from enamel antagonists loaded to 300 g)]. Following tape removal, step height (SH) in mum was measured using optical profilometry. RESULTS When the number of cycles increased the amount of tooth surface loss increased significantly in enamel and dentine after attrition and erosion and for dentine after attrition. Attrition and erosion resulted in greater surface loss than attrition alone after 15 cycles of experimental wear of enamel. 5000 ppm and 19,000 ppm sodium fluoride solutions had a protective effect on erosive and attritional enamel tooth wear in vitro, however no other groups showed significant differences. CONCLUSIONS The more intensive the fluoride regime the more protection was afforded to enamel from attrition and erosion. However, in this study no such protective effect was demonstrated for dentine.
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Affiliation(s)
- R S Austin
- Department of Primary Dental Care, King's College London Dental Institute, Caldecot Road, Denmark Hill, London SE5 9RW, United Kingdom.
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