PCD 8117 Lecture Notes - Lecture 17: Dentifrice, Fluoride, Georgian Lari
3 Jan 2020
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Document Summary
Review of fluoride dosage, concentration and amount calculations. What do percent and ppm mean: 1 percent = 1% = . 01, . 1 percent = . 1% = . 001, 1 ppm = 1 part-per-million = 1/1,000,000 = . 000001. Conversions: (dentifrice) 0. 1% = 1,000 ppm, if we multiply both sides by 10: 1% = 10,000 ppm, from water fluoridation and dietary supplementation: 1 ppm = 1 mg/1 liter = 1 mg/1,000ml: if we combine a. and c. , then: 0. 1% = 1,000 ppm = 1,000 (1 mg/1,000) = 1 mg/ml: then 1% = 10,000 ppm = 10 mg/ml, also, 1 ppm = 1 g/g = . 001 mg/1,000 mg. Fluoride amounts: general form: (quantity) x (concentration) Quantities to reach probably toxic dose (ptd) (1 lb. = 454 g) (1 pint = 16 oz. 50 mg f = (9. 1 mg f/10 ml) x (# ml) # ml = (50 mg f) x (10 ml/9. 1 mg f)
