Suppose you have a loss of enamel from the inside due to acid erosion or other factors causing eroded teeth, especially on the backside of front teeth. In that case, the dentist must restore the lingual (backside of front teeth) with a dental bond, possibly lingual composite veneer, or lingual porcelain veneer, or a reverse veneer.
The longevity will be questionable if all the enamel is gone, and only dentin remains due to acid erosion! The dentist relies on the dental bond to bond the lingual veneer or reverse porcelain veneer to dentin, which is not as strong as a bond when it is bonded to enamel.
Per Los Angeles cosmetic dentist Dr. Anthony Mobasser, it is well worth going with the least invasive method to restore your damaged, eroded teeth conservatively.
Assuming financing is not an issue, we would use lingual veneers or reverse veneers. Lingual veneers are the least invasive method, vs. placing a porcelain crown, which is a more aggressive approach! We must always evaluate the bite and occlusion before having reverse veneers or lingual veneers.