How to get whiter teeth...

There are a number of things you can do to make your teeth whiter.

To begin with, you should do the regular brushing and flossing procedure.

Get rid of tobacco chewing habit. It can lead to oral cancer as well.

Control the amount of coffee or tea you drink.

Try to use porcelain crowns to hide discolored teeth.

Increase the frequency of visiting the dentist for regular cleanup. Visit every three months instead of six.

Bleaching your teeth is a another good option to consider.

Black nail

Black nail is very common.

It's caused by acute trauma, most commonly jamming a finger or thumb in a door, stubbing a toe - or when the wrong sort of nail gets hit with a hammer.

Subungual means 'under the nail', haematoma means bruise.

As with all bruises in time it will disappear.

Sometimes the nail will fall off because of the damage but it usually grows back.

When the build up of pressure under the nail causes pain, making a small hole in the nail relieves it.

The doctor or chiropodist can do this.