Surface Testing of Dental Biomaterials—Determination of Contact Angle and Surface Free Energy
The key goal of this study was to characterize surface properties of chosen dental materials on the base on the contact angle measurements and surface free energy calculations. Tested materials were incubated in the simulated oral environment and drinks to estimate an influence of conditions similar...
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doaj-616d8b26651245088ef8e86010940b112021-06-01T00:44:20ZengMDPI AGMaterials1996-19442021-05-01142716271610.3390/ma14112716Surface Testing of Dental Biomaterials—Determination of Contact Angle and Surface Free EnergyAneta Liber-Kneć0Sylwia Łagan1Department of Applied Mechanics and Biomechanics, Faculty of Mechanical Engineering, Tadeusz Kosciuszko Cracow University of Technology, 37 Jana Pawla II Av., 31-864 Cracow, PolandDepartment of Applied Mechanics and Biomechanics, Faculty of Mechanical Engineering, Tadeusz Kosciuszko Cracow University of Technology, 37 Jana Pawla II Av., 31-864 Cracow, PolandThe key goal of this study was to characterize surface properties of chosen dental materials on the base on the contact angle measurements and surface free energy calculations. Tested materials were incubated in the simulated oral environment and drinks to estimate an influence of conditions similar to those in the oral cavity on wetting and energetic state of the surface. Types of materials were as follows: denture acrylic resins, composite and PET-G dental retainer to compare basic materials used in a prosthetics, restorative dentistry and orthodontics. The sessile drop method was used to measure the contact angle with the use of several liquids. Values of the surface free energies were estimated based on the Owens–Wendt, van Oss–Chaudhury–Good and Zisman’s methods. The research showed that surface wetting depends on the material composition and storage conditions. The most significance changes of CA were observed for acrylic resins (84.7° ± 3.8° to 65.5° ± 3.5°) and composites (58.8° ± 4.1° to 49.1° ± 5.7°) stored in orange juice, and for retainers (81.9° ± 1.8° to 99.6° ± 4.5°) incubated in the saline solution. An analysis of the critical surface energy showed that acrylic materials are in the zone of good adhesion (values above 40 mJ/m<sup>2</sup>), while BIS-GMA composites are in the zone of poor adhesion (values below 30 mJ/m<sup>2</sup>). Study of the surface energy of different dental materials may contribute to the development of the thermodynamic model of bacterial adhesion, based on the surface free energies, and accelerate the investigation of biomaterial interaction in the biological environment.https://www.mdpi.com/1996-1944/14/11/2716surface free energy (SFE)contact angle (CA)dental materialsenameladhesion |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Aneta Liber-Kneć Sylwia Łagan |
spellingShingle |
Aneta Liber-Kneć Sylwia Łagan Surface Testing of Dental Biomaterials—Determination of Contact Angle and Surface Free Energy Materials surface free energy (SFE) contact angle (CA) dental materials enamel adhesion |
author_facet |
Aneta Liber-Kneć Sylwia Łagan |
author_sort |
Aneta Liber-Kneć |
title |
Surface Testing of Dental Biomaterials—Determination of Contact Angle and Surface Free Energy |
title_short |
Surface Testing of Dental Biomaterials—Determination of Contact Angle and Surface Free Energy |
title_full |
Surface Testing of Dental Biomaterials—Determination of Contact Angle and Surface Free Energy |
title_fullStr |
Surface Testing of Dental Biomaterials—Determination of Contact Angle and Surface Free Energy |
title_full_unstemmed |
Surface Testing of Dental Biomaterials—Determination of Contact Angle and Surface Free Energy |
title_sort |
surface testing of dental biomaterials—determination of contact angle and surface free energy |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2021-05-01 |
description |
The key goal of this study was to characterize surface properties of chosen dental materials on the base on the contact angle measurements and surface free energy calculations. Tested materials were incubated in the simulated oral environment and drinks to estimate an influence of conditions similar to those in the oral cavity on wetting and energetic state of the surface. Types of materials were as follows: denture acrylic resins, composite and PET-G dental retainer to compare basic materials used in a prosthetics, restorative dentistry and orthodontics. The sessile drop method was used to measure the contact angle with the use of several liquids. Values of the surface free energies were estimated based on the Owens–Wendt, van Oss–Chaudhury–Good and Zisman’s methods. The research showed that surface wetting depends on the material composition and storage conditions. The most significance changes of CA were observed for acrylic resins (84.7° ± 3.8° to 65.5° ± 3.5°) and composites (58.8° ± 4.1° to 49.1° ± 5.7°) stored in orange juice, and for retainers (81.9° ± 1.8° to 99.6° ± 4.5°) incubated in the saline solution. An analysis of the critical surface energy showed that acrylic materials are in the zone of good adhesion (values above 40 mJ/m<sup>2</sup>), while BIS-GMA composites are in the zone of poor adhesion (values below 30 mJ/m<sup>2</sup>). Study of the surface energy of different dental materials may contribute to the development of the thermodynamic model of bacterial adhesion, based on the surface free energies, and accelerate the investigation of biomaterial interaction in the biological environment. |
topic |
surface free energy (SFE) contact angle (CA) dental materials enamel adhesion |
url |
https://www.mdpi.com/1996-1944/14/11/2716 |
work_keys_str_mv |
AT anetaliberknec surfacetestingofdentalbiomaterialsdeterminationofcontactangleandsurfacefreeenergy AT sylwiałagan surfacetestingofdentalbiomaterialsdeterminationofcontactangleandsurfacefreeenergy |
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