An Older Patient Is Being Taught About Oral Gingivitis

An older patient is being taught about oral gingivitis.The nurse has included instruction about maintaining an oral hygiene program,signs and symptoms of oral infection,and the importance of maintaining regular professional dental care.What important teaching has been missed?

A) Information about when to have teeth removed and dentures made
B) The necessity of using a hard-bristled toothbrush to maintain cleanliness
C) The importance of avoiding meat and caffeine-containing products
D) The importance of adequate nutrition for maintaining oral health