Dental care
Learning Center
When to brush your teeth
When should you brush your teeth? Learn how to protect your oral health.
Want whiter teeth?
If your pearly whites are dulled by surface stains, whitening toothpaste can appear to whiten teeth slightly. Whitening toothpaste can't change the natural color of your teeth, however. For more noticeable results, ask your dentist about tooth-whitening bleaching products.
Virtual colonoscopy
Unlike other colon cancer screening tests, this imaging test doesn't use a scope to examine your colon. Learn how it works and what to expect.
Video: Skin cancer — How skin cancer develops
Watch this video to see what melanoma and nonmelanoma skin cancers look like and how they develop.
Video: Sentinel node biopsy for melanoma
Video shows sentinel node biopsy to determine whether melanoma has spread.
Video: Mammogram for breast cancer — What to expect
Watch video to see what it's like to have a mammogram, or breast cancer detection exam.
Video: HSG test for female infertility
Video animation shows the HSG test — an X-ray study to identify causes of female infertility.
Video: Endoscopy
An endoscopy allows your doctor to view your esophagus, stomach and part of the small intestine. Here's how it works.
Video: Colonoscopy
See what a doctor sees when you undergo an examination of your colon.
Video: Barium enema
See what to expect during an X-ray examination of your colon.
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