2013
DOI: 10.1117/1.jbo.18.10.108002
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Measurements of erbium laser-ablation efficiency in hard dental tissues under different water cooling conditions

Abstract: Laser triangulation measurements of Er:YAG and Er,Cr:YSGG laser-ablated volumes in hard dental tissues are made, in order to verify the possible existence of a "hydrokinetic" effect that has been proposed as an alternative to the "subsurface water expansion" mechanism for hard-tissue laser ablation. No evidence of the hydrokinetic effect could be observed under a broad range of tested laser parameters and water cooling conditions. On the contrary, the application of water spray during laser exposure of hard de… Show more

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Cited by 31 publications
(28 citation statements)
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“…Also, the endogenous water increases the degree of ablation efficiency by eliminating the free water component from the tissue and maintaining the interprismatic stored water or bound OH components [18]. Water is required to prevent desiccation [19] and attenuate the temperature rise and hence, minimizes the risk of thermal injury to the pulp [14,20,21] and surrounding tissues.…”
Section: Introductionmentioning
confidence: 99%
“…Also, the endogenous water increases the degree of ablation efficiency by eliminating the free water component from the tissue and maintaining the interprismatic stored water or bound OH components [18]. Water is required to prevent desiccation [19] and attenuate the temperature rise and hence, minimizes the risk of thermal injury to the pulp [14,20,21] and surrounding tissues.…”
Section: Introductionmentioning
confidence: 99%
“…A irradiação do tecido dentinário com o laser de Er:YAG vai ao encontro da filosofia de mínima intervenção uma vez que seu comprimento de onda de 2,94 μm coincide com o pico de absorção máxima da banda da água (3,0 μm) e dos grupos hidroxilas da hidroxipaptita (2,8 μm), proporcionando uma interação efetiva com o tecido dental duro (Hibst;Keller, 1989;Kuscer;Diaci, 2013).…”
Section: Revisão De Literaturaunclassified
“…O laser de Er:YAG atua sobre o substrato dental por meio da ablação termomecânica, na qual a energia incidente é altamente absorvida pelas moléculas de água da estrutura dental ocasionando um rápido aquecimento e evaporação da água no tecido, levando a um aumento da pressão interna seguido de sucessivas microexplosões com ejeção dos tecidos (Hibst;Keller, 1989;Kuscer;Diaci, 2013).…”
Section: Revisão De Literaturaunclassified
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