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Oral Health and Preventive Dentistry



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Oral Health Prev Dent 17 (2019), No. 4     16. Aug. 2019
Oral Health Prev Dent 17 (2019), No. 4  (16.08.2019)

Page 385-393, doi:10.3290/j.ohpd.a42686, PubMed:31204393

Remineralising Effectiveness of Two Fluoride Varnishes Containing Additives: An In Vitro Study
Jain, Avani / Suprabha, Baranya Shrikrishna / Shenoy, Ramya / Natarajan, Srikant / Rao, Arathi
Purpose: To assess the remineralising efficacy of fluoride varnish containing additives and conventional sodium fluoride varnish.
Materials and Methods: 72 extracted upper central incisors specimens were randomly allocated to four groups after demineralisation: control; 5% sodium fluoride varnish (FV) (Fluoritop-SR); resin modified glass ionomer-based calcium phosphate containing fluoride varnish (CV) (Clinpro XT); fluoride varnish with xylitol coated calcium phosphate (cXp) (Embrace). Change in surface morphology, calcium phosphorous ratio and fluoride content of enamel were evaluated using scanning electron microscope and energy dispersive X-ray analysis (SEM-EDAX). Change in surface roughness was evaluated using profilometer analysis. All readings were taken at baseline, after demineralisation, at 2 weeks and 4 weeks of remineralisation.
Results: At 4 weeks of remineralisation surface roughness values were ranked as follows: control > FV = cXp > CV. Calcium phosphorus ratios were in the order: CV > FV = cXp > control and fluoride content (for treatment groups): CV = cXp > FV. Scanning electron microscopy images showed mineral deposition on the surfaces of the treatment groups with different deposition pattern of minerals.
Conclusion: Fluoride varnishes with or without additives are effective in remineralisation of early enamel lesions. Glass ionomer-based fluoride varnish results in better remineralisation than xylitol coated calcium phosphate containing fluoride varnish and 5% sodium fluoride varnish.

Keywords: fluoride varnish, glass ionomer, tooth remineralisation, xylitol