Determination of Dental Adhesive Composition throughout Solvent Drying and Polymerization Using ATR–FTIR Spectroscopy

The of this study aim was to develop a rapid method to determine the chemical composition, solvent evaporation rates, and polymerization kinetics of dental adhesives. Single-component, acetone-containing adhesives One-Step (OS; Bisco, Anaheim, CA, USA), Optibond Universal (OU; Kerr, Brea, CA, USA),...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Arwa Almusa, António H. S. Delgado, Paul Ashley, Anne M. Young
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ATR–FTIR acetone dental adhesive dental polymers degree of conversion methacrylate polymerization Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/50a8b3e2bd32472e813529b078e36447
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:50a8b3e2bd32472e813529b078e36447
record_format	dspace
spelling	oai:doaj.org-article:50a8b3e2bd32472e813529b078e364472021-11-25T18:47:57ZDetermination of Dental Adhesive Composition throughout Solvent Drying and Polymerization Using ATR–FTIR Spectroscopy10.3390/polym132238862073-4360https://doaj.org/article/50a8b3e2bd32472e813529b078e364472021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3886https://doaj.org/toc/2073-4360The of this study aim was to develop a rapid method to determine the chemical composition, solvent evaporation rates, and polymerization kinetics of dental adhesives. Single-component, acetone-containing adhesives One-Step (OS; Bisco, Anaheim, CA, USA), Optibond Universal (OU; Kerr, Brea, CA, USA), and G-Bond (GB; GC, Tokyo, Japan) were studied. Filler levels were determined gravimetrically. Monomers and solvents were quantified by comparing their pure Attenuated Total Reflectance-Fourier Transform Infra-Red (ATR–FTIR) spectra, summed in different ratios, with those of the adhesives. Spectral changes at 37 °C, throughout passive evaporation for 5 min, then polymerisation initiated by 20 s, and blue light emitting diode (LED) (600 mW/cm<sup>2</sup>) exposure (<i>n</i> = 3) were determined. Evaporation and polymerisation extent versus time and final changes were calculated using acetone (1360 cm<sup>−1</sup>) and methacrylate (1320 cm<sup>−1</sup>) peaks. OS, OU, and GB filler contents were 0, 9.6, and 5.3%. FTIR suggested OS and OU were Bis-GMA based, GB was urethane dimethacrylate (UDMA) based, and that each had a different diluent and acidic monomers and possible UDMA/acetone interactions. Furthermore, initial acetone percentages were all 40–50%. After 5 min drying, they were 0% for OS and OU but 10% for GB. Whilst OS had no water, that in OU declined from 18 to 10% and in GB from 25 to 20% upon drying. Evaporation extents were 50% of final levels at 23, 25, and 113 s for OS, OU, and GB, respectively. Polymerisation extents were all 50 and 80% of final levels before 10 and at 20 s of light exposure, respectively. Final monomer polymerisation levels were 68, 69, and 88% for OS, OU, and GB, respectively. An appreciation of initial and final adhesive chemistry is important for understanding the properties. The rates of evaporation and polymerisation provide indications of relative required drying and light cure times. UDMA/acetone interactions might explain the considerably greater drying time of GB.Arwa AlmusaAntónio H. S. DelgadoPaul AshleyAnne M. YoungMDPI AGarticleATR–FTIRacetonedental adhesivedental polymersdegree of conversionmethacrylate polymerizationOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3886, p 3886 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ATR–FTIR acetone dental adhesive dental polymers degree of conversion methacrylate polymerization Organic chemistry QD241-441
spellingShingle	ATR–FTIR acetone dental adhesive dental polymers degree of conversion methacrylate polymerization Organic chemistry QD241-441 Arwa Almusa António H. S. Delgado Paul Ashley Anne M. Young Determination of Dental Adhesive Composition throughout Solvent Drying and Polymerization Using ATR–FTIR Spectroscopy
description	The of this study aim was to develop a rapid method to determine the chemical composition, solvent evaporation rates, and polymerization kinetics of dental adhesives. Single-component, acetone-containing adhesives One-Step (OS; Bisco, Anaheim, CA, USA), Optibond Universal (OU; Kerr, Brea, CA, USA), and G-Bond (GB; GC, Tokyo, Japan) were studied. Filler levels were determined gravimetrically. Monomers and solvents were quantified by comparing their pure Attenuated Total Reflectance-Fourier Transform Infra-Red (ATR–FTIR) spectra, summed in different ratios, with those of the adhesives. Spectral changes at 37 °C, throughout passive evaporation for 5 min, then polymerisation initiated by 20 s, and blue light emitting diode (LED) (600 mW/cm<sup>2</sup>) exposure (<i>n</i> = 3) were determined. Evaporation and polymerisation extent versus time and final changes were calculated using acetone (1360 cm<sup>−1</sup>) and methacrylate (1320 cm<sup>−1</sup>) peaks. OS, OU, and GB filler contents were 0, 9.6, and 5.3%. FTIR suggested OS and OU were Bis-GMA based, GB was urethane dimethacrylate (UDMA) based, and that each had a different diluent and acidic monomers and possible UDMA/acetone interactions. Furthermore, initial acetone percentages were all 40–50%. After 5 min drying, they were 0% for OS and OU but 10% for GB. Whilst OS had no water, that in OU declined from 18 to 10% and in GB from 25 to 20% upon drying. Evaporation extents were 50% of final levels at 23, 25, and 113 s for OS, OU, and GB, respectively. Polymerisation extents were all 50 and 80% of final levels before 10 and at 20 s of light exposure, respectively. Final monomer polymerisation levels were 68, 69, and 88% for OS, OU, and GB, respectively. An appreciation of initial and final adhesive chemistry is important for understanding the properties. The rates of evaporation and polymerisation provide indications of relative required drying and light cure times. UDMA/acetone interactions might explain the considerably greater drying time of GB.
format	article
author	Arwa Almusa António H. S. Delgado Paul Ashley Anne M. Young
author_facet	Arwa Almusa António H. S. Delgado Paul Ashley Anne M. Young
author_sort	Arwa Almusa
title	Determination of Dental Adhesive Composition throughout Solvent Drying and Polymerization Using ATR–FTIR Spectroscopy
title_short	Determination of Dental Adhesive Composition throughout Solvent Drying and Polymerization Using ATR–FTIR Spectroscopy
title_full	Determination of Dental Adhesive Composition throughout Solvent Drying and Polymerization Using ATR–FTIR Spectroscopy
title_fullStr	Determination of Dental Adhesive Composition throughout Solvent Drying and Polymerization Using ATR–FTIR Spectroscopy
title_full_unstemmed	Determination of Dental Adhesive Composition throughout Solvent Drying and Polymerization Using ATR–FTIR Spectroscopy
title_sort	determination of dental adhesive composition throughout solvent drying and polymerization using atr–ftir spectroscopy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/50a8b3e2bd32472e813529b078e36447
work_keys_str_mv	AT arwaalmusa determinationofdentaladhesivecompositionthroughoutsolventdryingandpolymerizationusingatrftirspectroscopy AT antoniohsdelgado determinationofdentaladhesivecompositionthroughoutsolventdryingandpolymerizationusingatrftirspectroscopy AT paulashley determinationofdentaladhesivecompositionthroughoutsolventdryingandpolymerizationusingatrftirspectroscopy AT annemyoung determinationofdentaladhesivecompositionthroughoutsolventdryingandpolymerizationusingatrftirspectroscopy
_version_	1718410710364454912

Determination of Dental Adhesive Composition throughout Solvent Drying and Polymerization Using ATR–FTIR Spectroscopy

Ejemplares similares