Metal Ceramic Restoration Slideshare

Successfully modified to incorporate occlusal and in addition the required preparation often is much cingulum rests as well as milled proximal and reci less demanding than for partial coverage retainers.

Metal ceramic restoration slideshare. However it is always critical for patients to understand that the long term survival rates for all ceramic restorations are likely to be lower than those for metal ceramic restorations 10. One is the vitreous or glass phase and the other is the crystalline or mineral phase 19. Adequate thickness of metal. Then it is fired in the furnaces for sintering when fired the mass shrinks and flows so the built up mass has to be supported on a matrix.

A series of stages of maturation in the firing of ceramic materials relating to the degree of pyro chemical reaction and sintering shrinkage occurring before vitrification cervical 1 3 with a metal ceramic restoration proper contouring of the porcelain in the is crucial for facilitating maintenance of health of the supporting structures. Posterior metal ceramic crown step no 4 facial reduction gingival half 55. Fabrication of ceramic restoration. 2005 nazirkar et al.

The restoration is more important than the absolute longevity 9. Posterior metal ceramic crowns step no. Since there is a solid connection between the masking ceramic and the metal almost no changes of color will occur in the ceramic construction. Metal for coping of metal ceramic restoration the alloy must have a high melting temperature to withstand high firing temp of porcelain.

The key to successful ceramic restorations rests on material selection manufacturing technique and restoration design including the balancing of several factors such as residual stresses tooth contact conditions tooth size and shape elastic modulus of the adhesives and tooth structure and surface state. Int jour of dental clinic. Posterior metal ceramic crown step no. Traditional metal ceramic restorations still.

Posterior metal ceramic crowns step no 3 facial reduction occlusal half 54. Metal ceramic and all ceramic restorations. Posterior metal ceramic crown step no 6 lingual. Int journal of periodontics and restorative dent.

The porcelain powder is mixed with the liquid to form plastic mass which is condensed to form the porcelain restoration. The anterior all ceramic crown. High resistance to deformation at high temperature is essential. After the manufacturing process is completed feldspathic dental porcelain consists of two phases.

The complete coverage aspect of able prosthesis the metal ceramic crown may be the restoration permits easy correction of axial form. A rationale for the choice of ceramic and cement. An evaluation of two modern all ceramic crowns and their comparison with metal ceramic crowns in terms of the translucency and fracture strength. 2 depth orientation grooves 53.

The biggest advantage of the ceramic restoration is its permanent aesthetic quality.