Tooth Erosion Clinical Trial
Official title:
A Randomized, Examiner Blind, Crossover, in Situ Erosion Study to Investigate the Efficacy of an Experimental Dentifrice in Remineralization of Previously Softened Enamel Compared to a Placebo Dentifrice
This will be a randomized, controlled, single center, single- blind, 3 period, 3 treatment, cross-over, in situ design which consists of placing pre-eroded bovine enamel specimens intra orally using a palatal appliance and testing the remineralizing performance of the experimental (dentifrice containing 0.254 Percent weight by weight [%, w/w] sodium fluoride (1150 parts per million [ppm] fluoride) and 5% KNO3 [potassium nitrate]), comparator (dentifrice containing 0.454% w/w stannous fluoride (1100 ppm fluoride) and placebo (Fluoride free placebo containing 5% KNO3 [0 ppm fluoride] ) dentifrices 2 and 4 hours (hrs) post treatment application, based on surface micro hardness measurements. This study will be carried out in healthy adults with a maxillary dental arch suitable for the retention of the palatal appliance.
The aim of this study is to investigate the performance of an experimental dentifrice formulation in promoting enamel remineralization and inhibiting post-treatment enamel demineralization in an in situ erosion model, in comparison with a fluoride-free placebo and with a marketed competitor dentifrice product. The study will have 4 visits, 1 screening visit to assess participants eligibility and 3 treatment visits to assess product efficacy, where the treatment product will be dispensed and used under the supervision of a suitably trained study site personnel. Prior to each treatment visit, there will be a washout period of a minimum of 3 days. During this period participants will use their own dentifrice for at least one day, and a fluoride free dentifrice (provided) for two days prior to the next scheduled visit (including in the morning of the scheduled visit) to minimize any carry-over effects of the fluoride toothpaste. ;
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