Application
Dental sealants are applied in a dentist's office. The dentist, dental hygienist or assistant first cleans and dries the tooth to be treated, then applies a slightly acidic solution on the tooth to create a rough surface that helps the sealant bond, and finally paints a thin layer of liquid plastic material on the pits and fissures of the tooth. After application of the plastic liquid, blue spectrum natural light is shone on the applied material for a few seconds to cure the plastic. Alternatively, some brands of sealants self-cure via a chemical process.
After curing, the plastic becomes a hard, thin layer covering the treated portions of the tooth. Despite the heavy pressures effected on teeth during chewing each day, dental sealants may remain effective for five years or longer, although sealants do wear naturally and may become damaged over time. Bacteria and food particles may eventually become entrapped under the dental sealants, and can thus cause decay in the very teeth intended to be protected.
Read more about this topic: Dental Sealant
Famous quotes containing the word application:
“If you would be a favourite of your king, address yourself to his weaknesses. An application to his reason will seldom prove very successful.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)
“It is known that Whistler when asked how long it took him to paint one of his “nocturnes” answered: “All of my life.” With the same rigor he could have said that all of the centuries that preceded the moment when he painted were necessary. From that correct application of the law of causality it follows that the slightest event presupposes the inconceivable universe and, conversely, that the universe needs even the slightest of events.”
—Jorge Luis Borges (1899–1986)
“The receipt to make a speaker, and an applauded one too, is short and easy.—Take of common sense quantum sufficit, add a little application to the rules and orders of the House, throw obvious thoughts in a new light, and make up the whole with a large quantity of purity, correctness, and elegancy of style.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)