What are teeth

What are teeth made of?

What are teethOur teeth consist of four different tissues which are enamel, dentin, cementum, and dental pulp. The enamel is the outer layer of the tooth and is the hardest substance in the human body. The color of enamel varies from grayish white to light yellow. Most of the enamel consists of minerals, sometimes as much as 96%. The rest is water and organic material binding it together. The layer of enamel varies over the tooth but the thickest layer is about 2.5 millimeters.

To support the layer of enamel, there is an underlying layer of dentin. This layer is between the enamel and the dental pulp. It is a mineralized tissue that is connective and consists of 70% inorganic materials, 20% organic materials, and 10% water. Dentin is a much softer tissue than enamel and therefore causes more problems once the enamel layer is damaged. It is crucial to fix holes that have formed in to the dentin layer.

In the root of the tooth you don’t have a layer of enamel; instead you have a bonelike material covering the dentin called cementum. This layer has one main function and that is to make the tooth stick with the bone in the mouth. It also has a light yellow color and looks a lot like enamel.

Further inside a tooth you have the dental pulp. This is where the nerves lie and it is also filled with soft tissue and blood vessels. It is the central part of the tooth and is commonly known as the nerve of the tooth.

A grown human being that still has all of his teeth intact has 32 teeth. You have four types of teeth – incisors, canines, premolars (also known as bicuspids) and molars. The front teeth are called incisors and are used for biting pieces of food while the molars in the back are used to grind the food.