Inlay, onlay, overlay and pinlay are types of restorative prosthesis that fall somewhere between fillings and dental crowns. In other words, these microdentures are used to restore cavities that are too large for fillings but can be managed without installing crowns. This is a conservative treatment and is preferred over crowns as they help to preserve more of the natural tooth structure. They are now primarily used for the back teeth like premolars and molars. Utilized to strengthen damaged teeth, they facilitate chewing and prevent further decay. Earlier they were also used for front teeth, but veneers are now the preferred option for anterior restorations due to esthetic concerns.