Influence of Filler Content and Gap Dimension on Wear Resistance of Resin Composite Luting Cements around a CAD/CAM Ceramic Inlay Restoration

Yasuhiro Torii, Kousuke Itou, Toshiyuki Itota, Kazuhiro Hama, Norifumi Konishi, Michihiro Nagamine, Kiyoshi Inoue

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

We investigated the influence of filler content and gap dimension on the wear resistance of composite luting cement around CAD/CAM ceramic inlay restorations. Experimental hybrid dual- cured composite luting cements containing 60, 70, 72, 74 and 80 wt% of silanated barium-silica fillers were used for cementing CAD/CAM ceramic inlay into the cavity. The specimens involving inlay-cement-tooth interfaces were subjected to a three-body wear test. The relation between the interfacial gap dimension and wear loss was also investigated using 60, 70 and 80 wt% filled cements. The cements containing more than 70 wt% filler presented significantly higher wear resistance than 60 wt% filled cement. There was a positive linear relationship between gap dimension and wear loss, and the inclination of the regression line decreased with increasing filler content. These results indicated that the higher filler content of the cement increased the wear resistance and this desirable influence appeared more remarkably in the wider horizontal gap dimension.

Original languageEnglish
Pages (from-to)453-461
Number of pages9
JournalDental materials journal
Volume18
Issue number4
DOIs
Publication statusPublished - Jan 1 1999

Keywords

  • Composite resin cement
  • Filler content
  • Wear resistance

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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