Different Polymers for the Base of Removable Dentures? Part I: A Narrative Review of Mechanical and Physical Properties

Even before considering their introduction into the mouth, choice of materials for optimization prosthesis depends on specific parameters such as biocompatibility, solidity, resistance, and longevity. In first part this two-part review, we approach various mechanical characteristics that affect choice, which are closely related to manufacturing process. Among currently available, it is mainly polymers suitable use in field. Historically, most widely used polymer has been polymethyl methacrylate (PMMA), but more recently, polyamides (nylon) polyether ether ketone (PEEK) have provided interesting advantages. The incorporation certain molecules these will lead modifications aimed at improving properties prosthetic bases. second safety aspects prostheses oral ecosystem (fragility undercuts soft/hard tissues, neutral pH saliva, stability microbiota) addressed. microbial colonization prosthesis, relation composition material its surface conditions (roughness, hydrophilicity), primary importance. Whatever process chosen, coating or finishes dependent condition remain essential (polishing, non-stick coating) limiting colonization. objective narrative review compile an inventory physical well clinical likely guide between base removable prostheses.