you're never too old to have good oral health or to receive regular professional care. If you take care, your teeth and gums will look good and remain healthy throughout your life. In aging, however, you may need to change somewhat the care you their prodigal.
If you need advice in this direction, either for yourself or an older person from your parents or friends, you get valuable information from your dentist and to the Canadian Dental Association.
You're never too old to have teeth and gums, and you're never old enough to no longer go to the dentist! Your dentist is that you maintain healthy teeth and gums throughout your life. It says here you how your needs change with age.
Brushing and flossing - In addition to regular dental examination, the two most important actions to maintain good teeth brushing and flossing.
Denture Care - It is equally important to take care of prosthetics as natural teeth. 
Tips for Caregivers - You may have to take care of another person, a family member or friend. You can do much to help them take care of their teeth.
Dental examination - Everybody needs a periodic dental examination. The reason is simple: even if you always clean their teeth with brushing and flossing, you cannot see all the corners of your mouth.