So you're in the dental health aisle and and trying to figure out which toothbrush to buy. Read the below for some tips. 

You’ll find a large selection of toothbrushes available, both manual and electric. It's a good idea to choose one that:

• has a small head so it's easier to move around inside your mouth
• has soft bristles
• fits comfortably in your hand

Most important is brushing your teeth properly at least twice a day.

Adapting Toothbrushes for Special Needs
If you have difficulty controlling hand, arm or shoulder movements, here are some ideas on adapting standard toothbrushes:

• Enlarge the handle with a tennis ball, sponge foam or bicycle grip
• Lengthen with a stick or rod
• Attach to the hand or arm with elastic or Velcro straps or hand brace
• Bend the toothbrush handle
• For people who cannot manage fine movements, try using an electric toothbrush

Caring For Your Toothbrush

• Do not share your toothbrush or use someone else’s toothbrush
• After brushing, rinse your toothbrush thoroughly with tap water and allow to air-dry
• Store standing upright. If it is near other toothbrushes, do not let the heads touch
• Do not store in closed containers
• Replace your toothbrush every three to four months or when the bristles look worn and bent

taken from: http://www.oda.on.ca/personal-oral-care/learn-how-to-toothbrushes