Bonding performance of a thiohydantoin-methacrylate monomer on noble metal alloys

Kosuke Takehana, Hiroyasu Koizumi, Haruto Hiraba, Akihisa Kodaira, Takayuki Yoneyama, Hideo Matsumura

Research output: Contribution to journalArticlepeer-review


This study assessed the effect of a primer containing 10-methacryloyloxydecyl-(2-thiohydantoin-4-yl)propionate (MDTHP) on the bonding of noble metal alloys to an acrylic resin. Three noble metal alloys were selected as adherends, and V-Primer containing 6-(4-vinylbenzyl-n-propyl)amino-1,3,5-triazine-2,4-dithione was used as a comparative control. The disk specimens of each noble metal alloy were wet-ground and divided into three conditions: specimens primed with MDTHP primer or V-Primer, and specimens without priming. An acrylic resin was bonded to each specimen, and the specimens were performed the shear bond test. The MDTHP primer showed higher shear bond strength than the V-Primer for all specimens. X-ray photoelectron spectroscopic analysis showed that MDTHP was adsorbed on the Au-Pt-Pd alloy surface even after acetone cleaning. MDTHP binds not only with Cu but also with Au and Ag, promoting the bond strength of noble metal alloys. The effectiveness of MDTHP on dental noble metal alloys was suggested.

Original languageEnglish
Article number2021-181
Pages (from-to)279-285
Number of pages7
JournalDental Materials Journal
Issue number2
Publication statusPublished - 2022


  • Adhesive
  • Bonding
  • Noble metal alloy
  • Thiohydantoin
  • Thione


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