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. 2020 Jun 28;8(3):61. doi: 10.3390/dj8030061

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Absorption spectral profiles curves of major tissue elements associated with bone and dental hard tissue management. Absorbance is shown relative to wavelength of irradiation. Key: water (blue), protein/collagen (green), hydroxyapatite—HA and carbonated HA (white). Original data and graphics: Parker S. Data source: Parker, S; et al. Laser Essentials for the Dental Practitioner: Foundation Knowledge—Construction, Modes of Operation and Safety. EC Dental Science 2019, 18.9, 2020–2027 [2].