Flexural properties and wear behavior of computer-aided design/computer-aided manufacturing resin blocks

Hajime Oouchi, Toshiki Takamizawa, Tomohiko Tamura, Ryo Ishii, Akimasa Tsujimoto, Masashi Miyazaki, Nobuya Kitahara

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This study investigates the flexural properties, Knoop hardness number (KHN), and wear behavior of computer-aided design and computer-aided manufacturing (CAD/CAM) resin blocks and compares these values with those of conventional resin composites for direct restoration (RCDs). Four CAD/CAM resin blocks and two RCDs are compared. Ten specimens per material are used to obtain the flexural properties according to ISO 6872 specifications, and five specimens per material are used for KHN measurement. For sliding impact wear testing, twelve specimens are prepared. Confocal laser scanning microscopy (LSM) is used to determine maximum facet depth and volume loss. Polished material surfaces and worn surfaces after wear testing are observed using scanning electron microscopy and LSM. While measured flexural properties and KHN are found to be material-dependent, CAD/CAM resin blocks exhibit higher wear resistance than RCDs. CAD/CAM resin blocks polymerized at high-pressure and high-temperature are found to exhibit wear behaviors far superior to those of RCDs.

Original languageEnglish
Pages (from-to)979-985
Number of pages7
JournalDental Materials Journal
Volume40
Issue number4
DOIs
Publication statusPublished - 2021

Keywords

  • CAD/CAM resin composite
  • Flexural properties
  • Wear behavior

Fingerprint

Dive into the research topics of 'Flexural properties and wear behavior of computer-aided design/computer-aided manufacturing resin blocks'. Together they form a unique fingerprint.

Cite this