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The effect of CO2 and Nd:YAP lasers on CAD/CAM Ceramics: SEM, EDS and thermal studies.
El Gamal, Ahmed; Fornaini, Carlo; Rocca, Jean Paul; Muhammad, Omid H; Medioni, Etienne; Cucinotta, Annamaria; Brulat-Bouchard, Nathalie.
Afiliação
  • El Gamal A; Micoralis laboratoy EA 7354, University of Nice Sophia Antipolis, Nice, France.
  • Fornaini C; Micoralis laboratoy EA 7354, University of Nice Sophia Antipolis, Nice, France; Group of Applied ElectroMagnetics, Information Engineering Department, University of Parma, Italy.
  • Rocca JP; Micoralis laboratoy EA 7354, University of Nice Sophia Antipolis, Nice, France; Restorative Dentistry and Endodontics Department, Faculty of Dentistry, University of Nice-Sophia Antipolis, Nice, France; Pôle Odontologie, CHU Nice Saint Roch, Nice, France.
  • Muhammad OH; Micoralis laboratoy EA 7354, University of Nice Sophia Antipolis, Nice, France.
  • Medioni E; Micoralis laboratoy EA 7354, University of Nice Sophia Antipolis, Nice, France; Restorative Dentistry and Endodontics Department, Faculty of Dentistry, University of Nice-Sophia Antipolis, Nice, France; Pôle Odontologie, CHU Nice Saint Roch, Nice, France.
  • Cucinotta A; Group of Applied ElectroMagnetics, Information Engineering Department, University of Parma, Italy.
  • Brulat-Bouchard N; Restorative Dentistry and Endodontics Department, Faculty of Dentistry, University of Nice-Sophia Antipolis, Nice, France; Pôle Odontologie, CHU Nice Saint Roch, Nice, France.
Laser Ther ; 25(1): 27-34, 2016 Mar 31.
Article em En | MEDLINE | ID: mdl-27141152
ABSTRACT
BACKGROUND AND

AIMS:

The objective of this study was to investigate the interaction of infrared laser light on Computer Aided Design and Computer Aided Manufacturing (CAD/CAM) ceramic surfaces. MATERIAL AND

METHODS:

Sixty CAD/CAM ceramic discs were prepared and divided into two different groups lithiumdisilicate ceramic (IPSe.maxCADs) and Zirconia ceramic (IPSe.maxZirCADs). The laser irradiation was performed on graphite and non-graphite surfaces with a Carbon Dioxide laser at 5W and 10W power in continuous mode (CW mode) and with Neodymium Yttrium Aluminum Perovskite (NdYAP) laser at 10W. Surface textures and compositions were examined using Scanning Electron Microscopy (SEM), and Energy Dispersive Spectroscopy (EDS). Thermal elevation was measured by thermocouple during laser irradiation.

RESULTS:

The SEM observation showed a rough surface plus cracks and fissures on CO2 10W samples and melting areas in NdYAP samples; moreover, with CO2 5W smooth and shallow surfaces were observed. EDS analysis revealed that laser irradiation does not result in modifications of the chemical composition even if minor changes in the atomic mass percentage of the components were registered. Thermocouple showed several thermal changes during laser irradiation.

CONCLUSION:

CO2 and NdYAP lasers modify CAD/CAM ceramic surface without chemical composition modifications.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2016 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2016 Tipo de documento: Article