Effects of immediate and delayed cementations for cad/cam resin block after alumina air abrasion on adhesion to newly developed resin cement

Akane Chin, Masaomi Ikeda, Tomohiro Takagaki, Toru Nikaido, Alireza Sadr, Yasushi Shimada, Junji Tagami

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The purpose of this study was to evaluate the effect of one week of Computer-aided design/Computer-aided manufacturing (CAD/CAM) crown storage on the µTBS between resin cement and CAD/CAM resin composite blocks. The micro-tensile bond strength (µTBS) test groups were divided into 4 conditions. There are two types of CAD/CAM resin composite blocks, namely A block and P block (KATANA Avencia Block and KATANA Avencia P Block, Kuraray Noritake Dental, Tokyo, Japan) and two types of resin cements. Additionally, there are two curing methods (light cure and chemical cure) prior to the µTBS test—Immediate: cementation was performed immediately; Delay: cementation was conducted after one week of storage in air under laboratory conditions. The effect of Immediate and Delayed cementations were evaluated by a µTBS test, surface roughness measurements, light intensity measurements, water sorption measurements and Scanning electron microscope/Energy dispersive X-ray spectrometry (SEM/EDS) analysis. From the results of the µTBS test, we found that Delayed cementation showed significantly lower bond strength than that of Immediate cementation for both resin cements and both curing methods using A block. There was no significant difference between the two types of resin cements or two curing methods. Furthermore, water sorption of A block was significantly higher than that of P block. Within the limitations of this study, alumina air abrasion of CAD/CAM resin composite restorations should be performed immediately before bonding at the chairside to minimize the effect of humidity on bonding.

Original languageEnglish
Article number7058
JournalMaterials
Volume14
Issue number22
DOIs
Publication statusPublished - Nov 1 2021
Externally publishedYes

Keywords

  • CAD/CAM resin composite block
  • Long carbon chain
  • Micro tensile test
  • Self adhesive resin cement

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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