Assessment of clasp design and flexural properties of acrylic denture base materials for use in non-metal clasp dentures

Journal of Prosthodontic Research
Yoshihiro Iwata

Abstract

The purpose of this study was to investigate the possibilities of utilizing new acrylic denture base materials in resin clasps using three-point flexural tests and cantilever beam tests. Seven non-metal clasp denture (NMCD) materials and four acrylic denture base materials were used for three-point flexural tests and six NMCD materials and three acrylic denture base materials were used for cantilever beam tests. The flexural strength, elastic modulus, and 0.05% proof stress were measured by three-point flexural tests according to International Organization for Standardization (ISO) 20795-1. And load at 0.5mm deformation, elastic modulus were measured by Cantilever beam tests. For the three-point flexural tests, only materials that met the conditions for both flexural strength and elastic modulus were the polycarbonate Reigning N (REN) and the acrylics Acron (AC), Pro Impact (PI), Procast DSP (PC) and IvoBase High Impact (HI) which are required in ISO 20795-1, Type 3 denture base materials. And for cantilever beam tests there was no significant difference between PI and either EstheShot (ES), EstheShot Bright (ESB), REN or Acry Tone (ACT) in load at 0.5mm deformation, and no significant difference between PI and either Lucitone ...Continue Reading

References

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Dec 18, 2013·Journal of Prosthodontic Research·Misao KawaraOsamu Komiyama

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Citations

Mar 9, 2018·Dental Materials Journal·Hae-Hyoung LeeChikahiro Okubo
Dec 28, 2017·The Journal of Advanced Prosthodontics·Jung-Hwan LeeHae-Hyoung Lee
Feb 2, 2019·Journal of Prosthodontic Research·Toshiki YamazakiNoriyuki Wakabayashi
Oct 16, 2019·Dental Materials Journal·Wei ZouKeiichi Sasaki
Jul 9, 2021·Dental Materials Journal·Jialin HaoNoriyuki Wakabayashi

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