National Board Dental Hygiene Examination (NBDHE) Dental Hygienist Practice Test

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Prepare for the NBDHE Dental Hygienist Exam. Enhance your skills with comprehensive flashcards and multiple-choice questions, each with hints and explanations. Ace your test with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

A diastema between teeth #8 and #9 is indicated by what visual marker?

A horizontal line
Two vertical red lines
A dashed blue line
A dotted green line

The correct answer is: Two vertical red lines

A diastema, which refers to a gap between two teeth, particularly between the central incisors in the maxillary arch (teeth #8 and #9), is typically indicated visually with two vertical red lines. This visual marker is used because it clearly delineates the extent of the gap, making it easy for clinicians to identify and assess the relationship between those teeth. Proper visualization is crucial in dental hygiene and orthodontic evaluations, as it helps in diagnosing issues related to spacing and alignment. The red lines serve to emphasize the presence of the diastema and facilitate discussion or treatment planning related to the space between the teeth.