Internal Defects in All-ceramic Crowns Using Computed Tomography
نویسندگان
چکیده
also often required even in the posterior region. However, all-ceramic crowns pose some problems, including weak mechanieal properties and occurrence of cracks or pores in the erown that could ultimately lead to fracture oi' the restorationii'. Thus far, all-ceramic crowns have been fabricated by firing porcelain manuaNy onto a refractory die, or by casting or heat-pressing the cerarnics. However, in recent years, a method using CADfCAM systems for machining ceramics has eome into wide
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