Metal-ceramic bridges are the ones most commonly used by all other types of prosthetic work (the known porcelain bridges). They are made up of a metal frame that is entirely covered with ceramic (porcelain). Bridges of this type generally have good aesthetics, high strength and a wide range of applications. Aesthetic deficiency of the metallic ceramics is the presence of a metal skeleton, which of course is completely covered with porcelain, but it gives a relative opacity to the neck (near the gums), which only an experienced eye can distinguish. Typically, a skilled dental technician in a well-equipped dental laboratory can overcome this drawback and construct very beautiful metal-ceramic work.
The problem of the appearance of the metal skeleton in the neck area can be alleviated by placing the limits of the tooth preparations under the gums so that the limits of restorations are slightly entered into them. The presence of a dark metal skeleton, which, although completely covered with porcelain, does not allow the light to penetrate the rim as it does in the natural teeth, giving a relative opacity to the final restoration. Their variation is galvano-ceramic bridges using clean gold (99.9%) which ensures absolute biocompatibility. The warm yellow color of the metal frame combined with the ceramic coating provides an excellent result for aesthetic dentistry.