Phosphate group adsorption capacity of inorganic elements affects bond strength between cad/cam composite block and luting agent

Eri Tokunaga, Noriyuki Nagaoka, Yukinori Maruo, Kumiko Yoshihara, Goro Nishigawa, Shogo Minagi

Research output: Contribution to journalArticlepeer-review

Abstract

This study aimed to investigate whether inorganic elements of polymer-infiltrated ceramic (PIC) and microfilled resin (MFR) for CAD/ CAM would affect initial bond strength to luting agent. Inorganic elements of PIC and MFR were different with shape and ingredient observed by SEM, STEM and EDS. Microtensile bond strengths (^TBS) value of PIC was increased by 10-methacryloyloxydecyl dihydrogen phosphate (MDP) and acetic acid (AA)- or MDP-activated silane treatment, and further increased by succeeding heat treatment (HT). The ^TBS of MFR was increased by MDP and MDP-activated silane, but decreased by AA-activated silane without HT. The HT improved the ^TBS of MFR with AA-activated silane, but conversely for MDP-activated silane. Only in MFR, phosphoric acid (PA) application before each surface treatment dramatically decreased the ^TBS of AA-activated silane. FTIR peaks in MFR shifted according to phosphate group’s peak. MFR would possess high phosphate group adsorption capacity, with MDP effectively improving its bonding capability.

Original languageEnglish
Pages (from-to)288-296
Number of pages9
JournalDental materials journal
Volume40
Issue number2
DOIs
Publication statusPublished - 2021

Keywords

  • Methacryloyloxydecyl dihydrogen phosphate (MDP)
  • Microfilled resins
  • Microtensile bond strength
  • Polymer-infiltrated ceramic
  • Silane

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

Fingerprint

Dive into the research topics of 'Phosphate group adsorption capacity of inorganic elements affects bond strength between cad/cam composite block and luting agent'. Together they form a unique fingerprint.

Cite this