Rather than soothe and comfort, a hot cup of tea or cocoa can cause people with sensitive teeth a jolt of pain. But scientists are now developing a new biomaterial that can potentially rebuild worn enamel and reduce tooth sensitivity for an extended period. They describe the material, which they tested on dogs, in the journal ACS Nano.

Chun-Pin Lin and colleagues note that tooth sensitivity is one of the most common complaints among dental patients. Not only does it cause sharp pains, but it can 

Patient's Question: 
I want to get a smile makeover but am concerned about the cost of cosmetic dentistry. What do most procedures cost? 

Answer: Cosmetic dental procedures can range from simply whitening teeth, combined with reshaping minor discrepancies, to a full mouth smile makeover. 

The cost will depend on what your goals are, as well as where you live. The best first step is a comprehensive exam and personalized consultation with a dentist 

Do you agree that a smile is the best makeup a girl can wear?

A white, healthy smile can work wonders for your overall appearance, so make sure you give your teeth the care and attention they deserve. Brush a least twice a day, for a minimum of two minutes, using gentle circular motions. Focus on each tooth individually and don't neglect the hard to reach teeth at the back.

• It is just as important to floss daily as it is to brush. Flossing removes built-up bacteria, food particles and plaque from between the teeth, thus preventing cavities from forming.
• Also remember to brush your tongue with the toothbrush and use a mouthwash to prevent bad breath.