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NDAEB Diagnostic Mock — Question 1 of 20
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NDAEB · DIAGNOSTIC · GUEST
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01
/ 20
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preventive procedures · EASY
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During a preventive counselling appointment, a patient asks how often to replace their toothbrush. Per Canadian Dental Association oral hygiene guidelines, the dental assistant should recommend replacing the toothbrush
A
approximately once every year, since good-quality bristles retain effectiveness for 12 months.
B
every 3–4 months, or sooner if bristles become frayed or after illness.
C
about every two weeks to keep bristles as fresh as possible.
D
only once all bristles have fully worn down to the plastic head.
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