Veneers are a covering placed over the visible area of the tooth. Veneers are usually only done to the part of the teeth that are visible when talking or smiling. The procedure can be direct or indirect.
The direct technique involves placing composite resin on the outside of the tooth using what is more commonly known as bonding.
The indirect technique usually involves two appointments because the veneers will be fabricated at a dental laboratory. At the first appointment the teeth are prepared, impressions taken, and the teeth are given a temporary covering. In two to three weeks the temporary veneers are removed and the custom porcelain or ceramic veneers are bonded to the teeth .
The difference between veneers and crowns are that much less tooth material is removed, and the procedure is generally less uncomfortable. Veneers are recommended for teeth that have large fillings or little tooth structure.