May caries-preventive fluoride regimes have an effect on dental erosive wear? An in situ study. (April 2014)

• Record Type: Journal Article
• Authors: Hystad Hove, Lene; Refsholt Stenhagen, Kjersti; Mulic, Aida; Holme, Børge; Tveit, Anne Bjørg
• Is Part Of: Acta odontologica Scandinavica. Volume 73:Number 2(2015)
• Page Start: 114
• Page End: 120
• Publication Date: 2014-04
• Subjects: Dentistry -- Periodicals; 617.6005
• DOI: 10.3109/00016357.2014.956146
• Languages: English
• ISSNs: 0001-6357

Abstract

<abstract> <title>Abstract</title> <p> <bold> <italic>Objective.</italic> </bold> High and low concentration NaF regimes have shown caries protective properties, but the preventive effect against erosive/abrasive wear is unclear. <bold><italic>Aim.</italic></bold> To measure the inhibiting effect on enamel wear of low and highly concentrated sodium fluoride (NaF) toothpastes and a stannous (SnF<sub>2</sub>) fluoride gel in a single-blind, randomized <italic>in situ</italic> study, using a White Light Interferometer. <bold><italic>Materials and methods.</italic></bold> Sixteen human molars were each divided into four specimens, mounted on acrylic mouth appliances and worn by eight volunteers for 9 days. Experimental procedures were performed in the laboratory. The enamel specimens were brushed every day with fluoride-free toothpaste. Treatments; group 1: no fluoride treatment (control), group 2: SnF<sub>2</sub> gel 2500 ppm F (5 min) every third day, group 3: NaF toothpaste 5000 ppm F 5 min every third day and 2 min the other days, group 4: NaF toothpaste 1450 ppm F (2 min) every day. In order to mimic gastric reflux/vomiting, the specimens were etched with 0.01 M HCl for 2 min twice a day. <bold><italic>Results.</italic></bold> The mean step height (µm) for the control specimens was −32.9 (SD = 6.8). The mean values for the other groups were −22.2 (SD = 8.4) (group 2), −30.8 (SD = 7.8) (group 3) and −31.4 (SD = 7.7) (group 4). Compared with the control, the SnF<sub>2</sub> treated specimens showed significantly lower wear. The NaF toothpastes gave no significant protective effect. <bold><italic>Conclusions.</italic></bold> Application of SnF<sub>2</sub> gel every third day gave protection against erosive–abrasive challenges. Daily application of both low concentration and high concentration NaF toothpaste provided no protection.</p> </abstract>