| 2663 Urinary F-excretion of adults after long-term intake of F-salt | ||
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A. SCHULTE, R. GRÄBER, and H.J. STAEHLE, University of Heidelberg, Germany Objectives: In general, caries prevalence in German adults needs to be reduced. Although F-salt may contribute to achieve this goal, in Germany this is only distributed for private use. Very few data are available about F-excretion in adults in connection with intake of F-salt. The cafeteria of the Heidelberg Medical and Dental School (VZMH) received special permission to prepare all meals with F-salt. Objective of the present study was to perform a long-term monitoring of the urinary F-excretion in persons who took their main meal in VZMH (study group) and in persons not taking such meals (control group). Methods: Prior to and 36 months after introduction of F-salt in VZMH each participant submitted 24h-urine which had been collected in 3 fractions (morning, afternoon and evening/night). Urinary F-concentration was determined by means of a F-sensitive electrode and F-excretion was computed. Results: During the observation time of 36 months the number of participants decreased from 200 to 86 in the study group and from 60 to 23 in the control group. In average each participant of the study group ate 3.0 main meals per week in VZMH. In afternoon urine of the study group – i.e. after the main meal in VZMH – the mean F-excretion±standard deviation was 33.98±21.18µg/h at baseline examination and 46.72µg/h±26.39µg/h 36 months after the introduction of F-salt in VZMH. This increase was statistically significant (p<0.05, Friedman-Test). The corresponding values of the control group were 32.60µg/h±21.76µg/h and 33.31µg/h±28.08µg/h and no statistically significant difference was observed (p>0.05, Friedman-Test). Conclusion: Augmented F-excretion after eating main meals which public catering operators have prepared with F-salt is due to a low and toxicologically insignificant but nevertheless distinct increase of F-intake. This study was supported in part by the Geman Federal Health Ministry (Grant No. 227-42265-49). | ||
| Seq #295 - F Products and Measurements 10:45 AM-12:45 PM, Saturday, 12 March 2005 Baltimore Convention Center 329 | ||
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