INBDE (Integrated National Board Dental Examination) Practice Exam

A 15 yr old lived in a non-fluoridated area all of their life. Which of the following is most likely to occur in this pt when they move to a community that has water with 6ppm?

1. Moderate dental fluorosis

2. GI problems

3. 50% reduction in dental caries

4. An increase in the amt of fluoride stored in their bones

The correct answer is: An increase in the amt of fluoride stored in their bones

A 15-year-old who has lived in a non-fluoridated area all their life and moves to a community with water containing 6ppm of fluoride is likely to experience an increase in the amount of fluoride stored in their bones. This is because their body is not used to regularly receiving fluoride and may try to store it in their bones, leading to a potential risk of skeletal fluorosis. Dental fluorosis can occur with exposure to high levels of fluoride, but the answer "A Moderate dental fluorosis" is not the most likely outcome in this scenario as the individual is not likely to consume enough fluoride through water alone to cause visible signs of fluorosis. The answer "B: GI problems" is also incorrect as the amount of fluoride provided by water at 6ppm is still within safe levels for gastrointestinal health. The answer "C: 50% reduction in dental caries" is incorrect as the individual is not likely to experience such a significant reduction in tooth decay just from changing their water source. Overall, the most likely outcome for this scenario is an increase in the amount of fluoride stored in the bones.