Conclusion

It is critical to understand the properties of various thermoplastic resins so that we can choose the optimal material based on the needs of the patient. Methods of relining and maintenance should be understood with reference to the properties of the different materials used. NMCDs should conform to the standard RDP design principles. When combined with rigid components, NMCDs offer greater planning flexibility compared with conventional RPDs, particularly in determining the insertion–removal axis and in preparing anterior axial surfaces. NMCDs should not be prescribed indiscriminately for all patients seeking improved aesthetics. NMCDs (non-rigid) are contraindicated when multiple teeth are missing and/or there is an absence of vertical occlusal stops. However, NMCDs with a metal framework are indicated in most situations and they provide the desired retention, stability, and support while improving patient aesthetics.