For patients who cannot or do not wish to undergo surgical intervention, removable dentures are an alternative for replacing missing teeth. Function wise these are inferior to fixed teeth because they derive support from the oral mucosa only.
However, wearing the dentures sincerely for some amount of time makes the patient adapt and accomodate the removable prosthesis pretty well.
Dentures are made usually up of a material called Poly Methyl Methacrylalate (PMMA), but can often be reinforced by a metal frame work for increasing strength. Now a days, newer materials like flexible denture material have become the best choices for the patients because they do not break on falling down or impinge on to the mucosa, leading to better patient compliance.