October 9th, 2011 
administrator 
The teeth are small structures, but important to help break down food and they are one of the most recognizable of many animals. Teeth can be confused with the bones due to their durability, but most people are not familiar with their composition.
Teeth consist primarily of three different types of tissue. The pulp is the innermost part of the tooth, closely associated with nerves. If a cavity eroded once the outer layers of your teeth, is this part that makes you the most pain. Internal and external stimuli (cold, warm, soft, etc.), these nerves are activated pulp, causing severe discomfort.
Then the dentin, the middle layer of the tooth. This is a permanent part of the tooth, just below the outer layer. Again, if the outer layer of the tooth is damaged or worn contact with the dentin with the outside world. Because it is so close, but not as close as the pulp, the nerve can cause severe pain and discomfort.
The outer layer of enamel, giving appearance white teeth, although not all teeth are white like the others. Ironically, teeth whitening can hurt in the long term. As you bleach your email you can actually wear down, making the tissue below reveal sensitive.
In addition to the composition, the teeth have a crown and a root. The crown is what appears above the gums, the root lies deep below the surface. The top is contained in the pulp roots and various other veins and arteries.
Finally, people have four different types of teeth, all with different goals in mind. If people evolved so that their eating habits. Choose for example, the teeth on the back of our mouth used for grinding, may be more widespread or more if people ate more grass or tough meat. Now, however, we have developed, we also have other species in our daily diet.
The incisors are in front of your mouth and are used to cut or cut food. Canines and premolars are used to tearing or breaking food. Canines often referred to as dogs because they are long and pointed. Finally, select the teeth at the back of your mouth that grind and grind food.
Now that you know, be careful with your teeth. Keep them healthy and they will work with you for a long time.
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