A surface treatment using a dilute acid to scarify and/or neutralize (an alkali) the surface. Often, concrete and other masonry surfaces are treated with muriatic acid (a dilute form of hydrochloric acid), but metals are usually treated with phosphoric or chromic acids.
A technique whereby a tooth is first treated with a mild acid solution, and then washed and dried. This makes the tooth surface rough (etched), thus allowing some tooth-coloured materials to adhere to the tooth surface.
Used when preparing a tooth for a tooth colored filling, a mild acid solution is placed on the tooth surface to make the surface rough (etched), the solution is then removed, the tooth is dried. The etching allows the tooth-colored filling materials to adhere to the tooth surface.
in waterproofing, use of a strong acid to cut away and remove the surface of concrete to expose the aggregate.
A procedure where a weak acid is painted on tooth enamel and then rinsed off to create a rough surface on the enamel to which orthodontic brackets or dental fillings can adhere.
(1) The use of a strong acid to remove the surface of concrete thereby exposing the aggregate. (2) The use of a strong acid to etch the surface of material such as metal in order for that material to accept a primer or Spray Polyurethane Foam.
A procedure where a weak acid is spread on the front of your teeth to ready your teeth for brackets. The acid etch helps your brackets stay in place.
A diluted acid, such as muriatic (hydrochloric) or phosphoric acid is poured on the floor to remove the cement laitance or to remove the top surface to create a rough profile.
1. The use of acid to cut lines into metal or glass. 2. The use of acid to remove the surface of concrete.
