title: Comparative evaluation of sorption, solubility and microhardness of heat cure polymethylmethacrylate denture base resin & flexible denture base resin.
abstract: OBJECTIVE
  The aim of the study was to evaluate and compare sorption, solubility and microhardness of heat cure polymethylmethacrylate (PMMA) denture base resin and flexible (thermoplastic polyamide nylon) denture base resin.
  
  
  METHODS
  Sorption, solubility and microhardness were assessed to determine compliance with ADA Specification no. 12. RESULTs were assessed using statistical and observational analyses.
  
  
  RESULTS
  All materials satisfied ADA requirements for sorption, solubility and microhardness. Heat cure PMMA showed more sorption, solubility and microhardness than flexible (thermoplastic polyamide nylon).
  
  
  CONCLUSIONS
  Flexible (thermoplastic polyamide nylon) resin absorbs less water, is less soluble and is more flexible than PMMA.
authors.affiliation: Private Practitioner, Vapi, Gujarat, India .
authors.forename: Jay
authors.initials: J
authors.lastname: Shah
authors.affiliation: Associate Professor, Department of Prosthodontics, Dr. D. Y. Patil Dental College, Dr. D. Y. Patil Vidyapeeth , Pimpri, Pune, Maharashtra, India .
authors.forename: Nilesh
authors.initials: N
authors.lastname: Bulbule
authors.affiliation: P.G. Student, Department of Prosthodontics, Dr. D. Y. Patil Dental College, Dr. D. Y. Patil Vidyapeeth , Pimpri, Pune, Maharashtra, India .
authors.forename: Shilpa
authors.initials: S
authors.lastname: Kulkarni
authors.affiliation: P. G. Student, Department of Prosthodontics, Dr. D. Y. Patil Dental College, Dr. D. Y. Patil Vidyapeeth , Pimpri, Pune, Maharashtra, India .
authors.forename: Riddhi
authors.initials: R
authors.lastname: Shah
authors.affiliation: Professor and Head of Department, Department of Prosthodontics, Dr. D. Y. Patil Dental College, Dr. D. Y. Patil Vidyapeeth , Pimpri, Pune, Maharashtra, India .
authors.forename: Dilip
authors.initials: D
authors.lastname: Kakade
keywords: Microhardness; PMMA; Solubility; Sorption