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The Masseter Muscle is a thick muscle which is primarily responsible for our chewing action. It is one of the strongest muscles in the entire human body. The Masseter muscle is a very thick muscle made up in two parts the Outer Masseter muscle and the Inner Masseter muscle.
8 incisors are anterior teeth, 4 in the upper arch and 4 in the lower. Their function is for shearing or cutting food during chewing. There are no cusps on the teeth. Instead, the surface area of the tooth used in eating is called the incisal ridge or incisal edge.