FLUORIDE FOR ABPD EXAM STUDY GUIDE QUESTIONS AND ANSWERS

FLUORIDE FOR ABPD EXAM STUDY
GUIDE QUESTIONS AND ANSWERS
Fluoride Calculation Numbers - pph (%) to ppm - ANSWER-Multiple pph (%) by
10,000 to get ppm

Ex: 2.26% x 10,000 = 22,600 ppm

Fluoride Calculation Numbers - Atomic Weights - ANSWER-NaF - Na = 23, F = 19
Ex: F in NaF = 19/42

How much fluoride is in Toothpaste (mg of F) - ANSWER-In a 7.8oz (221g) tube with
0.24% NaF.

(1) to calculate mg of F
% = g/100mL - 7.8oz = 230.67mL

NaF - F = 19/42 = 0.45238

0.24% = .24g/100mL = 240mg/100mL

230.67mL/100mL = 2.3067


2.3067x240mg = 553.608mg of NaF in a 7.8oz

553.608mg NaF x 0.45238 = 250.44mg F

How much fluoride is in Toothpaste (ppm of F) - ANSWER-In a 7.8oz (221g) tube
with 0.24% NaF.

(1) to calculate ppm of F

NaF - F = 19/42 = 0.45238

0.45238 x 0.24% NaF = 0.1085% F

0.1085% F x 10,000 = 1085 ppm F

Fluoride Rx Chart - ANSWER-

Fluoride Rx Formulations - ANSWER-Drops come in 0.125mg/drop
Tabs come in 1.00g / tab

Fluoride Rx Example - ANSWER-----8-Month Old Residing in FLUORIDE
DEFICIENT area

Rx: Sodium Fluoride Soln (0.125mgF/drop)