Anastasiou, AD orcid.org/0000-0003-3858-9431, Jha, A orcid.org/0000-0003-3150-5645, Richards, BDO et al. (10 more authors) (2015) Interaction of bio-minerals and gels with ultrafast lasers for hard tissue surface engineering. In: International Conference on Transparent Optical Networks. 17th International Conference on Transparent Optical Networks, 05-09 Jul 2015, Budapest. IEEE ISBN 9781467378802
Abstract
Acid-induced enamel erosion leading to dentine hypersensitivity is a growing problem for both the young and ageing population worldwide. Dentinal hypersensitivity is rising for the ageing population because of additional enamel wear. Both conditions adversely affect lifestyle and potentially can harm the systemic health of the patients. Since the loss of enamel is an irreversible process in vivo, the only way for restoring it is via exogenous means. In this work a novel route for enamel restoration using an acid-resistant, calcium phosphate based bio-mineral and ultrafast (femto-second, fs) pulsed lasers in the near IR wavelength is demonstrated. A mixture of calcium phosphate (in the form of mineral brushite) powder with a bio-mineral gel was used to coat acid eroded bovine enamel surfaces. After forming the mineral layers, the samples were irradiated with two different 100 - 200 fs pulsed lasers, one at 800 nm with 1 kHz repetition rate, and the other at 1044 nm with 1 GHz repetition rate. The laser-irradiated samples were characterized using X-ray diffraction, SEM, and Raman microscopy. It was found that irradiation with 1 GHz transformed brushite crystals to β-calcium pyrophosphate while the bio-mineral gel coating was melted and formed a homogeneous film on the enamel surface.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. |
Keywords: | Brushite, phase transformation, dentine hypersensitivity, enamel restoration, femtosecond lasers |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Dentistry (Leeds) > Paediatric Dentistry (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 19 Jan 2016 10:14 |
Last Modified: | 12 Dec 2024 11:32 |
Published Version: | http://dx.doi.org/10.1109/ICTON.2015.7193313 |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.1109/ICTON.2015.7193313 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:93219 |