The influence of varnish and high fluoride on erosion and abrasion in a laboratory investigation. (March 2015)

• Record Type: Journal Article
• Authors: Sar Sancakli, H; Austin, RS; Al‐Saqabi, F; Moazzez, R; Bartlett, D
• Is Part Of: Australian dental journal. Volume 60:Number 1(2015:Mar.)
• Page Start: 38
• Page End: 42
• Publication Date: 2015-03
• Subjects: Dentistry -- Periodicals; Dentistry -- Periodicals; Dentisterie -- Australie -- Périodiques; Tandheelkunde; 617.6
• DOI: 10.1111/adj.12271
• Languages: English
• ISSNs: 0045-0421

Abstract

<abstract abstract-type="main" id="adj12271-abs-0001"> <title>Abstract</title> <sec id="adj12271-sec-0001" sec-type="section"> <title>Background</title> <p>The aim of this study was to investigate the potential of concentrated fluoride varnishes to reduce enamel loss from repeated cycles of citric acid erosion and toothbrush abrasion <italic>in vitro</italic>.</p> </sec> <sec id="adj12271-sec-0002" sec-type="section"> <title>Methods</title> <p>Polished human enamel samples were exposed to fluoride varnishes: Bifluorid10<sup>®</sup> (NaF&CaF<sub>2‐</sub> 45200 ppmF), Duraphat<sup>®</sup> (NaF 22600 ppmF), Fluor‐Protector<sup>®</sup> (difluorsilane 1000 ppmF) and a control coating of copal ether varnish (0 ppmF) group and a deionized water group. For each group of 16 samples, nine cycles of erosion and nine cycles of erosion‐abrasion [1 cycle = erosion (0.3% citric acid, pH 3.2, 5 min) + artificial saliva (1 h, pH 7.0) + abrasion (120 linear strokes in artificial saliva from Oral B medium soft brushes 300 g loading]. The change in the enamel surface was evaluated using optical profilometry.</p> </sec> <sec id="adj12271-sec-0003" sec-type="section"> <title>Results</title> <p>Duraphat<sup>®</sup> and Bifluorid10<sup>®</sup> applications had a median (IQR) step height of 4.21 um (1.59) and 5.01 um (1.02). This was statistically significantly less than Fluor‐Protector<sup>®</sup> 6.83 um (1.25), copal ether 7.22 um (1.97) and water 7.39 um (1.96) (p < 0.001). For erosion‐abrasion, both Duraphat<sup>®</sup> and Bifluorid<sup>®</sup> had statistically lower step heights than the other products (p < 0.01).</p> </sec> <sec id="adj12271-sec-0004" sec-type="section"> <title>Conclusions</title> <p>The action of fluoride in a range of single‐application topical varnishes was effective in reducing enamel wear from erosion and erosion‐abrasion in this laboratory study.</p> </sec> </abstract>