Application of fluoride is least effective in preventing caries on which of the following surfaces of posterior teeth?

Question

Quizplus · Accepted Answer

The occlusal surfaces of posterior teeth have complex anatomy with many grooves, pits, and fissures, which make it difficult to clean, and thus, are more susceptible to caries. Application of fluoride is least effective on occlusal surfaces due to the difficulty in accessing all the crevices and pits. Therefore, E is the correct answer.

Application of Fluoride Is Least Effective in Preventing Caries on Which