Distribution of fluoride in human dental calculus.
The distribution of fluoride in human dental calculus was investigated using a mechanical sampling technique and the fluoride electrode. The fluoride concentrations were highest at the outer surface of dental calculus and, then fell to a plateau for the interior of the calculus, rising again as the tooth surface was approached. The coefficient of variation of fluoride concentration was significantly greater in the sub- than in the supragingival calculus (p < 0.01). The supragingival calculus thus tended to show a smoother distribution profile for fluoride than the subgingival calculus. Total fluoride, average fluoride, and maximum fluoride concentrations were not significantly different in supra- and subgingival calculus. No significant different were observed between males and females.
Okumura
H
H
Department of Preventive Dentistry, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan.
Nakagaki
H
H
Kato
K
K
Ito
F
F
Weatherell
J A
JA
Robinson
C
C
D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D003728:Dental Calculus / Q000737:chemistry*; D004577:Electron Probe Microanalysis; D005260:Female; D005459:Fluorides / Q000032:analysis*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008875:Middle Aged; D010710:Phosphates / Q000032:analysis
D010710:Phosphates; D005459:Fluorides