Middle-aged women with good oral hygiene are the most likely population to have which of the following?

Name: Middle-aged women with good oral hygiene are the most likely population to have which of the following?
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Question

Quizplus · Accepted Answer

Black-line stain is most commonly found in middle-aged women with good oral hygiene. It is characterized by a fine black or dark brown line on the teeth near the gingival margin and is not directly related to poor oral hygiene, unlike some other types of dental staining.

Middle-Aged Women with Good Oral Hygiene Are the Most Likely