According to the Royal Spanish Academy, it defines the word occlusion as the action and effect of occluding. It comes from the Latin “occlusĭo” referring to the development and conclusion of occlusion. In phonetics and phonology it is attributed to the closure or narrowing that makes it impossible or complicates the passage of a fluid through a vowel path of an articulation; or to the instantaneous closure of the articulation channel when it is pronounced or emits a sound.
In the dental environment, dental occlusion is called the contact of the teeth and the relationship between the arches and the occlusal interface.; it is a system that incorporates the teeth, joints, muscles of the head and neck. There are several types of dental occlusion among them are, static, is when the teeth come into contact with the jaw; dynamics, when the jaw is in motion, here we speak of the chewing process; next is the balanced occlusion which is the contact between opposing occlusive areas; the shared one, which is when a tooth is lacking, or had a loss; centric occurs when the teeth are at their maximum intercuspation; and finally the protected occlusion is the interaction between the two dental groups, which stop the mandibular closure.
In medicine, there is intestinal obstruction, which is the limitation or impediment of the normal course of the intestine, since a compression, obturation or kinking of it occurs. In the field of psychology it is used to describe what causes a memory blockage. And finally, the term is given to the defect of a metal due to the absorption of a gas inside the metal during the solidification process.