Physical properties and color stability of injection-molded thermoplastic denture base resins

So Yeon Song, Kyoung Soo Kim, Jeong Yol Lee, Sang-Wan Shin

Research output: Contribution to journalArticle

Abstract

PURPOSE.The purpose of this study was to compare mechanical and physical properties of injection-molded thermoplastic denture base resins. MATERIALS AND METHODS. In this study, six commercially available products (VA; Valplast, LC; Lucitone, ST; Smiltone, ES; Estheshot-Bright, AC; Acrytone, WE; Weldenz) were selected from four types of thermoplastic denture base materials (Polyamide, Polyester, Acrylic resin and Polypropylene). The flexural properties and shore D hardness have been investigated and water sorption and solubility, and color stability have evaluated. RESULTS. For the flexural modulus value, ES showed the highest value and WE showed significantly lower value than all other groups (P < .05). Most of experimental groups showed weak color stability beyond the clinically acceptable range. CONCLUSION. Within the limits of this study, thermoplastic denture base resin did not show sufficient modulus to function as a denture base. In addition, all resins showed discoloration with clinical significance, and especially polyamides showed the lowest color stability.

Original languageEnglish
Pages (from-to)32-40
Number of pages9
JournalJournal of Advanced Prosthodontics
Volume11
Issue number1
DOIs
Publication statusPublished - 2019 Jan 1

Keywords

  • Color stability
  • Denture base polymers
  • Flexural strength
  • Nonmetallic clasp dentures
  • Thermoplastic denture base resins

ASJC Scopus subject areas

  • Oral Surgery
  • Dentistry (miscellaneous)

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