Practice Quiz

ADA NBDHE Dental Hygienist

Category - Provision of Clinical Dental Hygiene Services

Start a Study Session Sign up for Question of the Day
What is the optimal concentration of fluoride in a community water supply?
  1. 0.12 ppm mg/L. 0.12mg/L or 0.12ppm (measured in mg/L OR parts per million {ppm}) One format should be used, not both in the same answer.
  2. 0.7 to 1.2 ppm mg/L. 0.7 to 1.2mg/L or 0.7ppm to 1.2ppm
  3. 0.7 ppm mg/L. 0.7mg/L or 0.7ppm
  4. 0.2 to 1.7 ppm mg/L. 0.2 to 1.7mg/L or 0.2ppm to 1.7ppm
Explanation
Answer: C - The optimal concentration of fluoride in a community water supply is 0.7 mg/L or 0.7ppm
Before 2011, the United States Public Health Service recommended a range of 0.7 to 1.2 mg/L or 0.7ppm to 1.2 ppm as the optimal range for water fluoridation. This range varied with the average air temperature of different regions depending upon how much of the fluoridated water supply the local inhabitants were likely to drink. The standard is now 0.7 mg/L or 0.7ppm for all areas.
Was this helpful? Upvote!
Login to contribute your own answer or details
Start a Study Session Sign up for Question of the Day

Top questions

Related questions

Most popular on PracticeQuiz