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  Mechanical and thermal response of enamel to IR radiation: a finite element mesoscopic model

Vila Verde, A., & Ramos, M. M. D. (2005). Mechanical and thermal response of enamel to IR radiation: a finite element mesoscopic model. In P. Rechmann, D. Fried, & T. Hennig (Eds.), Proceedings of SPIE (pp. 69-79).

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-002C-39E3-1 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-002C-3A89-3
Genre: Konferenzbeitrag

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 Urheber:
Vila Verde, Ana1, Autor           
Ramos, Marta M. D., Autor
Affiliations:
1external, ou_persistent22              

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 Zusammenfassung: We present finite element models of human dental enamel that account for water-pores known to exist in this material, and use them to assess the influence of these pores on the temperature and stress profiles during and after single Er:YAG (2.9 micrometer) and CO2 (10.6 micrometer) laser pulses of duration 0.35 microsec. Our results indicate that the temperature maximum is reached at the water-pores at the end of the laser pulse; this maximum seems to be independent of pore size for the CO2 laser but appears to be strongly dependent of pore size for the Er:YAG laser. The pressure reached at the water pore seems to be directly related to the temperature at the pore and it is significantly higher that the stress levels reached throughout the modelled structure, which indicates that water pores should play a significant role in the ablation mechanisms, even before water vaporization takes place. These results suggest that researchers conducting enamel ablation by Er:YAG lasers

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Sprache(n):
 Datum: 2005
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1117/12.589640
 Art des Abschluß: -

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Titel: Proceedings of SPIE
Genre der Quelle: Konferenzband
 Urheber:
Rechmann, P., Herausgeber
Fried, D., Herausgeber
Hennig, T., Herausgeber
Affiliations:
-
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 5687 Artikelnummer: - Start- / Endseite: 69 - 79 Identifikator: -