It is difficult to determine from a two dimensional x-ray alone whether or not crowns are indicated. The width of the fillings and the condition of the surrounding tooth structure is an important factor. If the fillings are not to big and the tooth is is good shape, you may be able to place new composite fillings and come away with a restoration that will last as long as an inlay. If the fillings are too wide and/or the tooth displays fracture that could compromise its ability to support a filling, the i would recommend going to a crown. For bicuspids, I prefer using E-max for maximum aesthetics or a conventional porcelain fused to gold (with a porcelain margin) if it can be matched well with the surrounding teeth.

Bruce Glover