Evaluation of the bonding effectiveness of a universal adhesive to the plasma-activated dentin surface


TEMEL U. B., KAM HEPDENİZ Ö., Gulec A.

European Journal of Oral Sciences, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2023
  • Doi Number: 10.1111/eos.12914
  • Journal Name: European Journal of Oral Sciences
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, CINAHL, EMBASE, MEDLINE, Veterinary Science Database
  • Keywords: bond strength, dental adhesive, plasma gases, Raman spectroscopy, scanning electron microscopy
  • Süleyman Demirel University Affiliated: Yes

Abstract

© 2022 Scandinavian Division of the International Association for Dental Research. Published by John Wiley & Sons Ltd.This study aimed to evaluate the effect of non-thermal atmospheric pressure plasma on the bond strength of a universal adhesive used in etch-and-rinse mode. Dentin surfaces were etched with phosphoric acid and samples were divided into groups exposed to either dry bonding, plasma-dried bonding, plasma-dried and rewetted bonding, or wet bonding (n = 10). Dentin surfaces of the plasma-dried specimens were treated with a plasma jet before the adhesive procedure. After application, composite blocks were built, and specimens were subjected to micro-tensile bond strength testing after 24 h and after 10,000 thermal cycles. The hybrid layer formation was evaluated by micro-Raman spectral analysis; the resin–dentin interface was analyzed by scanning electron microscopy. One-way ANOVA and Tukey's post hoc multiple comparison tests were used to statistically analyze the data. The bond strength values of the plasma-dried bonding groups were statistically higher than the non-plasma-treated groups both before and after aging. After the thermal cycles, bond strength values decreased significantly only in the wet bonding group. Micro-Raman spectral analysis revealed that plasma-drying increased adhesive penetration, especially hydrophobic monomer infiltration. This may increase the mechanical properties and durability of the resin–dentin interface, provide long-term stability, and improve the polymerization rate of the adhesive layer.