The strongest muscle is located in the
jaw. It is called the Masseter. It can close the teeth with a force of 25 kilograms on the incisors or 90 kilograms on the molars. We have two jaw muscles that are used for chewing and one of them is the Masseter Muscle. The Masseter Muscle is thick and rectangular. During chewing, the Masseter is helped by three other muscles: the temporalis, medial pterygoid and lateral pterygoid.