The benefit received by those living in a nonfluoridated part of a state with a fluoridated water supply is called which of the following?

Question

Quizplus · Accepted Answer

The fact that a significant number of states are so far below the benchmark is of special significance because of the diffusion or halo benefit of fluoride from fluoridated communities to surrounding nonfluoridated communities via the exportation of bottled beverages and processed foods. A study conducted to analyze this diffusion effect showed that 12-year-old children living in states where more than half of the communities had fluoridated water had 26% fewer decayed tooth surfaces per year than 12-year-old children living in states where less than one-quarter of the communities were fluoridated.

The Benefit Received by Those Living in a Nonfluoridated Part