The Application of PMMA Compressive Strength in Dentistry

The compressive strength of PMMA is of great significance in dental applications, which is specifically manifested as follows:

Denture base fabrication: PMMA plays an important role in denture base fabrication due to its compressive strength and other properties. During the production process, PMMA in the dough stage is filled into a specialized dental mold and compressed. Compression molding technology is one of the traditional methods for resin curing, which is convenient to process, familiar to dentists and technicians, and does not require complex and expensive equipment. However, its drawback lies in that it may cause changes in the size of the denture base, affecting the fit accuracy.

Withstand chewing pressure: In dental applications, denture bases made of PMMA need to withstand the pressure generated during chewing. Higher compressive strength can ensure that the denture base is not prone to rupture or deformation when subjected to pressure, thereby guaranteeing the normal use of the denture.

Comparison with other materials: Compared with other dental materials, the compressive strength of PMMA is within a certain range. For instance, some studies have reported that the compressive strength of PMMA is between 70 and 120MPa. This level of compressive strength gives PMMA certain advantages in dental applications.