NationMaster - Encyclopedia: Occlusion

In medicine, the term is often used to refer to blood vessels, arteries or veins which have become totally blocked to any blood flow. For issues of artery occlusion, see stenosis, atheroma, coronary catheterization.

In dentistry the term is used to refer to the manner in which the teeth from upper and lower arches come together when the mouth is closed.

Results from FactBites:

Occlusion - Wikipedia, the free encyclopedia (127 words)
	Occlusion is a term indicating that the state of something, which is normally open, is now totally closed.
	In dentistry, the term is used to refer to the manner in which the teeth from upper and lower arches come together when the mouth is closed.
	In computer graphics and image processing, occlusion is the effect of one object in 3-D space blocking another object from view.

Punctal and intra-canalicular occlusion - a guide for the practitioner (3301 words)
	However, punctum and intracanalicular occlusion are only appropriate for certain patients with aqueous abnormalities, and it is important that a correct diagnosis is made to allow selection of suitable patients for the procedure.
	In a retrospective examination of the effect of punctal occlusion on dry eye disorders using Freeman silicone plug insertion, a significant decrease in tear osmolarity was found together with a reduction in rose bengal staining in 75% of the eyes examined (Gilbard et al, 1989).
	They suggest that occlusion of one punctum on one or both sides should be reserved for cases when insertion in the upper punctum is difficult.

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