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Fluoride and silver concentrations of silver diammine fluoride solutions for dental use
Author(s) -
Mei May Lei,
Chu Chun Hung,
Lo Edward Chin Man,
Samaranayake Lakshman Perera
Publication year - 2013
Publication title -
international journal of paediatric dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.183
H-Index - 62
eISSN - 1365-263X
pISSN - 0960-7439
DOI - 10.1111/ipd.12005
Subject(s) - fluoride , ion , inorganic chemistry , ion selective electrode , electrode , chemistry , nuclear chemistry , selectivity , biochemistry , catalysis , organic chemistry
Objective To determine the short‐term stability of free fluoride ion concentrations and acidity (p H values) of three commercially available SDF solutions over time. Methods Three SDF products for caries control were studied: C ariestop‐12%, C ariestop‐30% and S aforide‐38%. Their expected fluoride ion concentrations were 14,200, 35,400 and 44,800 ppm, respectively. The fluoride ion concentrations were determined with an ion‐selective electrode. The acidity was determined with a p H electrode. The measurements were performed when open and at 7 and 28 days. Results The mean fluoride ion concentrations of the freshly opened bottles were 12,525 ± 450, 13,200 ± 2060 and 55,800 ± 2536 ppm, respectively. The mean pH values were 9.4 ± 0.1, 10.4 ± 0.1 and 10.2 ± 0.2, respectively. No significant change ( P > 0.05) in the fluoride ion concentrations or the acidity was detected after 7 or 28 days. Conclusion The three SDF tested solutions were alkaline. The fluoride ion concentrations of C ariestop‐30% and S aforide‐38% were considerably different. The fluoride ion concentrations and acidity of the products demonstrated a short‐term stability over 28 days.