Meibomian gland Meibomian gland The Meibomian glands (often written with a small "m" and also called tarsal glands) are a holocrine type of exocrine glands, at the rim of the eyelids inside the tarsal plate, responsible for the supply of meibum, an oily substance that prevents evaporation of the eye's tear film. Meibum prevents tear spillage onto the cheek, trapping tears between the oiled edge and the eyeball, and makes the closed lids airtight. There are approximately 50 glands on the upper eyelids and 25 glands on the lower eyelids. Dysfunctional meibomian glands often cause dry eyes, one of the more common
Dental sealant reasons GIC is more of a fluoride vehicle rather than a traditional fissure sealant. All three materials are as effective as each other if the correct techniques are used to complete the procedure. Indications for the use of dental sealants are individual patients or teeth that are at high risk of dental caries. This includes patients with: Contraindications for the use of dental sealants are individual patients or teeth that are at a low risk of dental caries: This includes patients with: The exact technique depends on the material used and a good application technique will increase retention, which means