The Anatomy of the Jaw & Teeth

How much do you know about the anatomy of your teeth? When you look at your teeth in the mirror, you see a hard white surface, known as the enamel. Below this layer is something called the dentine, which has a creamy color and makes up a large part of your tooth. This dentin is surrounded by nerves and blood vessels, which is why worn down enamel is a made cause for tooth sensitivity. If hot or cold liquids can travel through thinning or absent enamel, it reaches the dentin, and the dentin has small tubes throughout it leading to the blood vessels and nerves. The liquids reaching these nerves and blood vessels will cause your teeth to feel discomfort or pain.

In this way, dentine is alive and can register pain. The pulp contains the blood vessels and nerves. When you have a cavity or tooth decay, you don’t usually start to feel pain until the decay reaches the pulp. When your tooth forms a cavity, the only way to fix it is to remove the decay and put a filling in its place. Fillings are now usually tooth-colored, whereas before many fillings were done with silver alloy or gold.

The Anatomy of the Jaw

Your upper jaw is fixed and your lower jaw is movable. In humans, the fetus and infant jaw have two halves, which fuse at the midline a few months after birth.

In children, their bones are composed of smaller component bones, and they haven’t fused yet; it is easier for babies to pass through the birth canal for this reason. The jawbone is the hardest bone in the human body. It is one of the hardest bones to break! The bite force varies from person to person, but a bite force as great as 268 pounds for molars has been reported! The jaw muscle is also the strongest muscle in the human body.

The mandible lower jaw consists of two perpendicular parts, the rami (or singular ramus). The alveolar process is the part of the mandible that holds the teeth. The condyle, or condylar process, makes up the temporomandibular joint. The coronoid process is a thin, triangular part that provides a place for the temporalis muscle to fit.

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The Anatomy of the Jaw & Teeth was last modified: August 9th, 2020 by Palos Heights Family Dental