The craze of tooth whitening, that's been going around and is getting more popular and more people gain interest in, as smokers and coffee drinkers don't want their habits to reflect their smiles.

So there are gels, the stripes, the gel with light, zoom, etc. etc.

An article on MSN Health & Fitness, breaks down the Tips & Tricks to whiter smiles.

the Article is below and here is the link to it: http://health.msn.com/centers/oralhealth/articlepage.aspx?cp-documentid=100124848&GT1=8921

By: DR. JERRY GORDON

Sometimes the pulp becomes infected. When this happens, it must be removed with root canal therapy. A root canal is the only way to save the tooth. A mature tooth can survive very well without the pulp.

Tooth Anatomy

To understand how a root canal works, we need to have a basic understanding of the anatomy of the tooth. A tooth is hollow, like our bones, and is composed of several layers. The outermost layer (above the gum-line) is called the enamel. Enamel is the hardest and most mineralized substance in the body. Beneath the gum-line, a substance called cementum covers the tooth roots. Under the enamel and cementum is the dentin. The dentin is about as hard as bone, and, unlike the enamel, dentin contains nerve endings. Beneath the dentin is the dental pulp. The pulp is a vascular tissue, composed of capillaries, larger blood vessels, connective tissue, nerve fibers, and cells including odontoblasts, fibroblasts, macrophages, and lymphocytes. The pulp is needed to nourish the tooth during its growth and development. After a tooth is fully mature, the only function of the pulp is to let us know if it is damaged or infected by transmitting pain.

Source: ZeeNews

Washington, Jan 05: Manchester University dentists have created a unique way of identifying osteoporosis sufferers from ordinary dental x-rays.

Working in collaboration with colleagues at the Universities of Athens, Leuven, Amsterdam, and Malmo, they developed a software-based approach to detecting osteoporosis during routine dental x-rays, by automatically measuring the thickness of part of the patient`s lower jaw.