Effect of Different Concentrations of Fluoride in Dentifrices on Dentin Erosion Subjected or Not to Abrasion in situ/ex vivo

This in situ/ex vivo study assessed the effect of different concentrations of fluoride in dentifrices on dentin subjected to erosion or to erosion plus abrasion. Ten volunteers took part in this crossover and double-blind study performed in 3 phases (7 days). They wore acrylic palatal appliances containing 4 bovine dentin blocks divided in two rows: erosion and erosion plus abrasion. The blocks were subjected to erosion by immersion ex vivo in a cola drink (60 s, pH 2.6) 4 times daily. During this step, the volunteers brushed their teeth with one of three dentifrices D (5,000 ppm F, NaF, silica); C (1,100 ppm F, NaF, silica) and placebo (22 ppm F, silica). Then, the respective dentifrice slurry (1:3) was dripped on dentin surfaces. While no further treatment was performed in one row, the other row was brushed using an electric toothbrush for 30 s ex vivo. The appliances were replaced in the mouth and the volunteers rinsed with water. Dentin loss was determined by profilometry and analyzed by 2-way ANOVA/Bonferroni test (a = 0.05). Dentin loss after erosive-abrasive wear was significantly greater than after erosion alone. Wear was significantly higher for the placebo than for the D and C dentifrices, which were not significantly different from each other. It can be concluded that the presence of fluoride concentrations around 1,100 ppm in dentifrices is important to reduce dentin wear by erosion and erosion + abrasion, but the protective effect does not increase with fluoride concentration.

[1]  M. Buzalaf,et al.  Influence of Fluoride Dentifrice on Brushing Abrasion of Eroded Human Enamel: An in situ/ex vivo Study , 2006, Caries Research.

[2]  D. Zero,et al.  Protective Effect of the Dental Pellicle against Erosive Challenges in situ , 2006, Journal of dental research.

[3]  T. Attin,et al.  Influence of rotating-oscillating, sonic and ultrasonic action of power toothbrushes on abrasion of sound and eroded dentine. , 2006, Journal of periodontal research.

[4]  M. Buzalaf,et al.  Effect of Salivary Stimulation on Erosion of Human and Bovine Enamel Subjected or Not to Subsequent Abrasion: An in situ/ex vivo Study , 2006, Caries Research.

[5]  J. Schulte‐Mönting,et al.  Profilometric and Microradiographic Studies on the Effects of Toothpaste and Acidic Gel Abrasivity on Sound and Demineralized Bovine Dental Enamel , 2005, Caries Research.

[6]  M. Addy,et al.  A study in vitro of the combined effects of soft drinks and tooth brushing with fluoride toothpaste on the wear of dentine. , 2005, International journal of dental hygiene.

[7]  C. Ganss,et al.  Quantitative analysis of the impact of the organic matrix on the fluoride effect on erosion progression in human dentine using longitudinal microradiography. , 2004, Archives of oral biology.

[8]  M. Addy,et al.  A Study in vitro of the Abrasive Effect of the Tongue on Enamel and Dentine Softened by Acid Erosion , 2004, Caries Research.

[9]  T. Attin,et al.  Influence of buffering effects of dentifrices and fluoride gels on abrasion on eroded dentine. , 2004, Archives of oral biology.

[10]  C. Ganss,et al.  Effects of Two Fluoridation Measures on Erosion Progression in Human Enamel and Dentine in situ , 2001, Caries Research.

[11]  M. Eisenburger,et al.  Comparative Study of Wear of Enamel Induced by Alternating and Simultaneous Combinations of Abrasion and Erosion in vitro , 2003, Caries Research.

[12]  N X West,et al.  Investigation of erosion and abrasion on enamel and dentine: a model in situ using toothpastes of different abrasivity. , 2003, Journal of clinical periodontology.

[13]  M. Addy,et al.  Can tooth brushing damage your health? Effects on oral and dental tissues. , 2003, International dental journal.

[14]  A. Lussi,et al.  The Role of Diet in the Aetiology of Dental Erosion , 2003, Caries Research.

[15]  F. Lagerlöf,et al.  Caries‐preventive effect of fluoride toothpaste: a systematic review , 2003, Acta odontologica Scandinavica.

[16]  M. Buzalaf,et al.  Evaluation of total pH and soluble and ionic fluoride concentrations in dentifrices commercially available in Brazil. , 2003, Oral health & preventive dentistry.

[17]  M Addy,et al.  Development of a method in situ to study toothpaste abrasion of dentine. Comparison of 2 products. , 2002, Journal of clinical periodontology.

[18]  C. Ganss,et al.  Effectiveness of Two Fluoridation Measures on Erosion Progression in Human Enamel and Dentine in vitro , 2001, Caries Research.

[19]  B. Amaechi,et al.  Eroded enamel lesion remineralization by saliva as a possible factor in the site-specificity of human dental erosion. , 2001, Archives of oral biology.

[20]  T. Attin,et al.  In situ Evaluation of Different Remineralization Periods to Decrease Brushing Abrasion of Demineralized Enamel , 2001, Caries Research.

[21]  D. J. White,et al.  Laboratory stain removal and abrasion characteristics of a dentifrice based upon a novel silica technology. , 2001, The Journal of clinical dentistry.

[22]  R. Newcombe,et al.  Studies in vitro of abrasion by different manual toothbrush heads and a standard toothpaste. , 2000, Journal of clinical periodontology.

[23]  T. Attin,et al.  Use of Variable Remineralization Periods to Improve the Abrasion Resistance of Previously Eroded Enamel , 1999, Caries Research.

[24]  T. Jaeggi,et al.  Toothbrush Abrasion of Erosively Altered Enamel after Intraoral Exposure to Saliva: An in situ Study , 1999, Caries Research.

[25]  J. M. Cate.  Current concepts on the theories of the mechanism of action of fluoride , 1999 .

[26]  J. M. ten Cate.  Current concepts on the theories of the mechanism of action of fluoride. , 1999, Acta odontologica Scandinavica.

[27]  T. Attin,et al.  Brushing Abrasion of Eroded Dentin after Application of Sodium Fluoride Solutions , 1998, Caries Research.

[28]  M. Balooch,et al.  Mineral Distribution and Dimensional Changes in Human Dentin during Demineralization , 1995, Journal of dental research.

[29]  D. Bartlett,et al.  Comparison of the effect of fluoride and non-fluoride toothpaste on tooth wear in vitro and the influence of enamel fluoride concentration and hardness of enamel , 1994, British Dental Journal.

[30]  J. M. ten Cate,et al.  Remineralization of bovine incisor root lesions in vitro: the role of the collagenous matrix. , 1991, Caries research.

[31]  F. Barbakow,et al.  Dentin abrasion (RDA), enamel abrasion (REA) and polishing scores of dentifrices sold in Switzerland. , 1989, Schweizer Monatsschrift fur Zahnmedizin = Revue mensuelle suisse d'odonto-stomatologie = Rivista mensile svizzera di odontologia e stomatologia.

[32]  D. J. White.  Reactivity of fluoride dentifrices with artificial caries. I. Effects on early lesions: F uptake, surface hardening and remineralization. , 1987, Caries research.