Interaction between toothpaste abrasivity and toothbrush filament stiffness on the development of erosiveabrasive lesions in vitro
dc.contributor.author | Lippert, Frank | |
dc.contributor.author | Arrageg, Mona A. | |
dc.contributor.author | Eckert, George J. | |
dc.contributor.author | Hara, Anderson T. | |
dc.contributor.department | Department of Cariology, Operative Dentistry and Dental Public Health, School of Dentistry | en_US |
dc.date.accessioned | 2017-08-18T15:02:38Z | |
dc.date.available | 2017-08-18T15:02:38Z | |
dc.date.issued | 2017 | |
dc.description.abstract | Objectives To investigate the loss of enamel and dentin surface caused by the interaction between abrasives in toothpaste and toothbrush filament stiffness. Methods The study followed a 2 (high-level or low-level abrasive; silica) × 3 (filament stiffness; soft, medium or hard) × 2 (cycling time; 3 or 5 days) factorial design. Polished bovine enamel and dentin specimens (n = 8 each per group) were subjected to 5 days of erosion/abrasion cycling: erosion (5 minutes, four times daily, 0.3% citric acid, pH 3.75); abrasion (15 seconds, twice daily, 45 strokes each, 150 g load, automated brushing machine); and fluoride treatment [15 seconds with abrasion and 45 seconds without abrasion; 275 p.p.m. fluoride (F−) as sodium fluoride (NaF) in abrasive slurry]. Enamel and dentin specimens were exposed to artificial saliva between erosion and abrasion/F− treatment (1 hour) and at all other times (overnight). Non-contact profilometry was used to determine surface loss (SL) after 3 and 5 days of cycling. Data were analysed using three-way analysis of variance (ANOVA) (factors: abrasive/filament stiffness/time), with separate analyses conducted for enamel and dentin. Results For enamel, only ‘cycling time’ was found to affect SL, with 5 days of cycling resulting in a greater SL than 3 days of cycling. Overall, there was little SL for enamel (range: 0.76–1.85 μm). For dentin (SL range: 1.87–5.91 μm), significantly higher SL was found for 5 days of cycling versus 3 days of cycling, with particularly large differences for hard stiffness/high-level abrasive and medium stiffness/low-level abrasive. For high-level abrasive, after 5 days of cycling hard stiffness resulted in significantly higher SL than did medium stiffness, with no other significant differences according to stiffness. Overall, high-level abrasive resulted in significantly higher SL than did low-level abrasive, with strong effects for all combinations, except medium stiffness after 5 days. Conclusion The interplay between abrasivity and filament stiffness appears to be more relevant for dentin than for enamel. | en_US |
dc.eprint.version | Author's manuscript | en_US |
dc.identifier.citation | Lippert, F., Arrageg, M. A., Eckert, G. J., & Hara, A. T. (2017). Interaction between toothpaste abrasivity and toothbrush filament stiffness on the development of erosive/abrasive lesions in vitro. International Dental Journal. http://dx.doi.org/10.1111/idj.12305 | en_US |
dc.identifier.uri | https://hdl.handle.net/1805/13864 | |
dc.language.iso | en | en_US |
dc.publisher | Wiley | en_US |
dc.relation.isversionof | 10.1111/idj.12305 | en_US |
dc.relation.journal | International Dental Journal | en_US |
dc.rights | IUPUI Open Access Policy | en_US |
dc.source | Author | en_US |
dc.subject | erosion | en_US |
dc.subject | abrasion | en_US |
dc.subject | toothbrushing | en_US |
dc.title | Interaction between toothpaste abrasivity and toothbrush filament stiffness on the development of erosiveabrasive lesions in vitro | en_US |
dc.type | Article | en_US |