Development of a Boron Nitride-Filled Dental Adhesive System

Senthilguru Kulanthaivel, Jeremiah Poppen, Sandra Ribeiro Cunha, Benjamin Furman, Kyumin Whang, Erica C. Teixeira

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

There is a dearth of adhesive systems capable of forming stable bonds between restorative materials and tooth surfaces. To address the concern, this study determined the effects of using methacrylate-functionalized boron nitride nanosheets (BNNSs) in a polymeric dental adhesive system. The bisphenol A glycidyl dimethacrylate (BisGMA):2 hydroxyethyl methacrylate (HEMA) (60:40) adhesive monomer blend with a photoinitiator was filled with 0 wt% (control), 0.1 wt%, and 1 wt% BNNSs and light cured. Fourier transform infrared spectroscopy was performed to determine the conversion degree of monomer double bonds (DoC). Water absorption and solubility were measured. Flexural strength and Youngs’s modulus were evaluated to determine the mechanical properties of the composite adhesive system. Finally, dentin bond strength degradation and fracture mode were quantified with a microtensile bond test to confirm the bonding ability of the developed adhesive system. Results showed that the incorporation of BNNSs increased DoC (9.8% and 5.4% for 0.1 and 1 wt%, respectively), but it did not affect water sorption (101.9–119.72 (µg/mm3)), solubility (2.62–5.54 (µg/mm3)), Young’s modulus (529.1–1716.1 MPa), or microtensile bond strength (46.66–54.72 MPa). Further studies are needed with varying BNNS loading percentages from 0.1 wt% to 1 wt% in order to more comprehensively determine the effect of BNNSs on dental adhesives.

Original languageEnglish (US)
Article number3512
JournalPolymers
Volume15
Issue number17
DOIs
StatePublished - Sep 2023

Keywords

  • boron nitride
  • dental adhesives
  • mechanical properties
  • nanofillers
  • water sorption

ASJC Scopus subject areas

  • General Chemistry
  • Polymers and Plastics

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