Dental Ceramic Layering Techniques

Dental ceramics are usually composed of nonmetallic inorganic structures primarily containing compounds of oxygen with one or.

Dental ceramic layering techniques.

Layer 1 primary or opaque layer. Dental porcelain also known as dental ceramic is a dental material used by dental technicians to create biocompatible lifelike dental restorations such as crowns bridges and veneers evidence suggests they are an effective material as they are biocompatible aesthetic insoluble and have a hardness of 7 on the mohs scale. Dental over glazes are composed of clear colorless low fusing glass powder painted on the fired crown surface. Dental ceramics are sensitive to microcracks that show up on surfaces.

In the long run it can lose its endurance against shear and draw strengths that occur while chewing. Dental technician illusion layering technique pfm dentine free pfm looks all ceramic. It is a thin layer positioned directly on the metal framework. During build up the technician takes into account all the information received from the dental office shade other details.

For certain dental prostheses such as three unit molars porcelain. Dental ceramics is applied in several layers normally 4 but it can be more. Today s ceramic restoration application despite its popularity gained through esthetical advantages and superior hygienically features has a fragile structure due to its low tensile strength quality. This gives a natural vivid lustrous appearance to the veneers that create the most natural life like smile makeovers that can be achieved.

In this article a simple and predictable restorative technique will be described that concentrates on the recreation of dental tissues of natural thickness layer by layer. Shade with depth in a metal ceramics system can be obtained only with a sufficient thickness of translucent porcelain. Feldspathic veneers and crowns use a layering technique where layers of porcelain are laid down and the tooth is grown much like a pearl or natural tooth grows to create feldspathic veneers. Traditionally fixed partial dentures fpds produced with a metallic infrastructure and a ceramic veneering layer have excellent clinical performance with studies showing an annual failure rate around 1 and a survival rate of 94 after 5 years of clinical follow ups.

Applied or add on glaze. Esthetically these materials are preferred alternatives to the traditional materials in order to meet the patients demands for improved esthetics. Some of the techniques are rather complex using numerous shades and layers making them difficult to learn and use in daily practice. Over the last decade it has been observed that there is an increasing interest in the ceramic materials in dentistry.

The background for basic techniques for building porcelain layers is explained with photographs in this chapter.