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Uptake and retention of fluoride by intact enamel in vivo after application of neutral sodium fluoride
Author(s) -
BRUUN CARSTEN
Publication year - 1973
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.1973.tb01499.x
Subject(s) - enamel paint , fluoride , dentistry , in vivo , biopsy , sodium fluoride , statistical significance , chemistry , maxillary central incisor , medicine , pathology , biology , inorganic chemistry , microbiology and biotechnology
– The uptake and retention of fluoride in surface enamel in vivo after a single topical application of a neutral 2 % NaF solution was studied on the basis of 2–3 μm thick enamel biopsies from maxillary central incisors in adults and children. The biopsy technique included delimiting of the sampling area by means of abrasive‐resistant, adhesive tape, punched with perforations of known sizes admitting of two biopsies on different places on the same tooth surface. This method made it possible to calculate the depth of each biopsy and to perform the comparative studies with intradental control. The F uptake was estimated by comparing F concentrations in biopsies taken before and 1 week after topical treatment. In teeth of 10‐ to 11‐year‐old children the F concentration increased 259 ± 393 parts/10 6 , which is statistically significant ( P < 0.002). The mean uptake in teeth of adults, 22–27 years of age, was 179 ± 401 parts/10 6 which did not exhibit statistical significance ( P > 0.10). The F concentrations in biopsies taken 1 week and 8 weeks after treatment from teeth in children were almost identical, indicating that the acquired F is firmly fixed in the enamel for 2 months or longer.