Teeth have three major functions, such as chewing food, affecting facial appearance, and assisting pronunciation. Once they fall out, it will bring a lot of trouble. Therefore, in order to restore teeth, dental all-ceramic dental restorations with various excellent functions are more and more used. clinical.
The types of materials commonly used in all-ceramic dental restorations can be simply divided into three types, namely zirconia all-ceramic teeth, cast porcelain teeth and alumina all-ceramic teeth. Among them, zirconium dioxide (ZrO2) ceramics have been the focus of research in the field of oral materials in recent years due to their excellent properties. The advantages of zirconia ceramics are very prominent. It not only has good mechanical properties (fracture toughness, strength, hardness, etc.), biocompatibility, stability, aesthetics, thermal conductivity and formability, it can solve the problem of conventional all-ceramic The crown material has insufficient strength and toughness, and the fracture toughness and flexural strength are about twice that of alumina ceramics.
The excellent mechanical properties of zirconia ceramics significantly make up for the problems of low toughness, poor impact resistance and high brittleness of traditional ceramic materials in oral clinical applications, creating a prerequisite for their application and promotion in the field of oral prosthodontics.