Читать книгу Fundamentals of Fixed Prosthodontics - James C. Kessler - Страница 98

When full coverage and maximum esthetics must be combined, an all-ceramic crown is the treatment of choice (Fig 6-16). All-ceramic crowns are not as resistant to fracture as metal-ceramic crowns, so their use must be restricted to situations likely to produce low to moderate stress. They are usually used for incisors, although cast glass ceramics are also employed in the restoration of posterior teeth. Preparations for this type of restoration on premolars and molars require the removal of large quantities of tooth structure.