Biocompatibility of Thermoplastic Nylon Flexible Removable Partial Denture – A Review

Abstract

Thermoplastic nylon is an ideal choice for RPD base material construction. Biocompatibility of nylon resin was obtained from flexibility, elasticity and the absence of residue left behind during manipulation processes. The existing flexibility and elasticity were extremely enabling it to be placed on the undercut area around the tooth and gingival, hence it provided maximum retention and stabilization. The advantages of this plastic material include no hypersensitivity reactions and the absence of metal components as it in conventional denture, so that aesthetics purposes can be achieved. The disadvantages of this resin is the presence of the amide group of hydrophilic nylon resin that able to absorb water and further hydrolyzed by the salivary hydrolase enzymes. Therefore, it can affect the flexibility and it color stability. A flexible RPD, when properly designed, carefully made, and adjusted when needed can be an entirely satisfactory restoration. On the contrary, the presence of a flexible RPD may increase plaque formation around the remaining teeth, so oral hygiene should receive great emphasized. Finally, before and after constructing a partial removable prosthesis, patient is motivated to maintain his remaining dentition with good oral hygiene to preserve the integrity of the oral environment.