A patient with a history of seizures who takes phenytoin is at risk for which oral problem?
a. Dryness of the mouth
b. Bitter taste
c. Demineralization of the tooth enamel
d. Gingival hyperplasia
D
Phenytoin causes gingival hyperplasia. Medications such as atropine cause dry mouth. Bitter taste can result from drugs such as docusate sodium, a stool softener. Phenytoin does not cause demineralization of the tooth enamel.
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