Effect of spherical silica filler addition on immediate interfacial gap-formation in Class V cavity and mechanical properties of resin-modified glass-ionomer cement

Kenji Hatanaka, Masao Irie, Rosalina Tjandrawinata, Kazuomi Suzuki

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The aim of this study was to investigate how the addition of silanized spherical silica filler (SF) would influence the formation of summed, immediate interfacial gaps in Class V tooth cavities. Resin-modified glass-ionomer cement (RMGIC) is usually used for Class V restorations. As such, the following aspects of RMGIC were examined in correlation with summed interfacial gaps in the tooth cavity: setting shrinkage of cement in the Teflon mold, as well as mechanical properties in terms of compressive strength, diametral tensile strength, and flexural strength. Spherical silica filler was added to the RMGIC powder (Fuji II LC EM). For comparison purpose, untreated spherical silica filler (UF) was added too. When compared with the control (i.e., original RMGIC mixed with manufacturer-recommended powder/liquid ratio), the addition of SF significantly decreased the formation of summed interfacial gaps in Class V cavities in the immediate condition. In particular, addition of 10 wt% SF increased the compressive strength by 56%, while diametral tensile strength was increased by 28% and flexural strength by 26%.

Original languageEnglish
Pages (from-to)415-422
Number of pages8
JournalDental materials journal
Volume25
Issue number3
DOIs
Publication statusPublished - Dec 15 2006

Keywords

  • Immediate condition
  • Resin-modified glass-ionomer cement
  • Silanized spherical silica fillers

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

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