Strength of lithium disilicate glass ceramics

The strength of lithium disilicate glass ceramics is one of its remarkable characteristics, which can be elaborated from the following aspects:

First, compressive and bending strength

Lithium disilicate glass ceramics have high compressive and flexural strength. Generally speaking, its compressive and flexural strength usually reaches more than 800MPa. This characteristic makes lithium disilicate glass ceramics perform well in applications that require greater mechanical stress, such as dental restorations, industrial components, etc.

Second, fracture stress

Under certain test conditions, such as the rupture stress of the Rosta SP Crown after die casting is as high as 460MPa, which shows the high strength performance of lithium disilicate glass ceramics after specific process treatment. Fracture stress is an important index to measure the ability of material to resist fracture when subjected to external forces. High fracture stress means that the material is less prone to fracture when subjected to external forces.

Third, flexural strength

Lithium disilicate glass ceramics also have a high flexural strength, up to 360MPa. Flexural strength is the ability of a material to resist deformation and fracture when subjected to bending forces, a property that is particularly important for applications that require complex stresses. For example, in dental restorations, high flexural strength restorations are better able to adapt to complex stress changes in the oral environment.

Fourth, flexural strength

In vitro fatigue experiments, the lithium disilicate glass ceramics showed higher flexure strength than the leucite reinforced glass ceramics. Flexural strength is an important index to measure the ability of a material to resist breaking when subjected to bending forces. High flexural strength means that the material is less likely to break when subjected to external bending forces. In addition, the study also shows that the bending strength of the lithium disilicate glass-ceramic occluded surface is higher than that of the polymer-permeable ceramic when bonded to the enamel surface, because the elastic modulus of the enamel is closer to that of the glass-based ceramic and can transmit the force better.

Fifth, practical application performance

In practical applications, the high strength characteristics of lithium disilicate glass ceramics have been widely verified. For example, in the field of dental restoration, the restoration made of lithium disilicate glass ceramics can withstand the maximum chewing force of ordinary people and is not easy to break; In the industrial field, lithium disilicate glass ceramics are also used to make parts that need to withstand greater mechanical stress.

In summary, lithium disilicate glass ceramics have high compressive strength, flexural strength, fracture stress, flexural strength and flexural strength, which make it have a wide range of application prospects in many fields. It should be noted that the strength data under different sources and test conditions may vary, and the specific value should be based on the test results of authoritative institutions or professional websites.