Surrounding a lot of people because of missing teeth, dental anomalies, to the formal oral hospital after receiving dental restorations, to wear the porcelain crown, but this porcelain crown what are the advantages and disadvantages of it?
First of metal ceramic crown has the advantage of:
1. Remarkably lifelike, the color is good. Ceramic crowns, porcelain powder sculpture and baked, so you can make the various forms required. Application of shade guide according to the patients I stay in tooth color and the needs of patients to choose a satisfactory color. And porcelain, sculpture and is made according to the level of natural tooth structure, so the color depth of the dental instruments transition, naturally dull. By glazed finish with natural teeth, and the tooth surface is not easily attached to the plaque.
2. Not easy to deformation, color stability. After the firing of the ceramic powder by the stable performance, no deformation and color stability, especially precious metal porcelain crown color stable.
3. Good physical properties and strong resistance to fracture and wear.
PFM technology also exists the following inadequacies: 1, PFM production process more complex, technical difficulty, medicine `Education Network need for high quality specialized equipment, materials collected. 2, tooth cutting, the patient can tolerate and co-ordination. 3, the tooth neck of the prosthesis deployment into the natural color of the more difficult. 4, porcelain brittle and prone to porcelain crack, porcelain crack repair more difficult.
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