A full veneer crown in restorative dentistry is designed to cover the entire clinical crown of a tooth, providing complete protection and structural support. This coverage includes all surfaces: occlusal, facial, lingual, mesial, and distal, ensuring strength and durability. It is especially important for teeth with significant decay or fractures, where partial restorations are insufficient. By encompassing the whole anatomical crown, a full veneer crown restores function, aesthetics, and prevents further deterioration. This comprehensive coverage differentiates it from partial crowns or onlays that cover limited surfaces only.

Reference: Sturdevant's Art and Science of Operative Dentistry, 7th Edition.