Hello wall means filling and cap is full coverage both are different totally

I feel you must be referring veneers as ceramic wall. Dental veneers, also known as porcelain veneers or composite veneers are thin shells of tooth-colored, translucent porcelain or composite resin, custom made to fit over teeth and improve their color, shape and overall appearance. Placement of dental veneers can dramatically improve your smile and appearance. A cap(crown) typically covers all sides of the tooth unlike veneers which usually covers only front side of the tooth. A single tooth crown costs you between 5k to 7k and veneers costs you around 3k for a single tooth.

Ceramic restorations are nothing but pporcelain materials. They are like tooth colored . There is ceramic caps/crowns and Nothinh called wall

Sir , you have to reframe your question , and emphasize on ceramic wall. What exactly you want to ask and in context to what? Coz ceramic wall might be a layman term told to you as there is no scientific term such as ceramic wall . Regards