THE IMPACT OF FABRICATION METHODOLOGIES ON THE FLEXURAL STRENGTH OF COMPLETE DENTURES: AN INVESTIGATION INTO TECHNOLOGICAL INFLUENCES

Abstract

Aim of the study. In this study, we examined how the choice of fabrication technology impacts the flexural strength of denture bases, considering the potential long-term consequences of permanent stresses on these structures. Such stresses can eventually result in cracking, fracture, or a loss of adaptation within the prosthetic field, which undergoes dynamic changes over time. Material and methods. The flexural strength was tested on specimens made of the same material (based on thermopolymerizable PMMA), using three different technologies: the classic press packing process and traditional polymerization, the injection technology and polymerization under constant pressure and an original suction-injection process (vacuum-pressure alternation), with polymerization under continuous pressure. The actual testing of the flexural strength was carried out in collaboration with the Department of Strength of Materials within the Faculty of Civil Engineering and Architecture Timisoara. Results & Conclusions. Superior outcomes were achieved through the suction-injection method, with polymerization under sustained pressure, in comparison to injection techniques associated with polymerization under constant pressure. These results surpassed those attained through manual press packing procedures and traditional hot polymerization methods.

Keywords

• dental prostheses technolgy
• polymers injection
• suction-injection procedure
• flexural strength