Root apex sealing with different filling materials photopolymerized with argon ion laser light

Luis Augusto Lupato Conrado; Iris Maria Frois; Renato Amaro Zangaro; Egberto Munin

doi:10.1117/12.476493

3 July 2003 Root apex sealing with different filling materials photopolymerized with argon ion laser light

Luis Augusto Lupato Conrado, Iris Maria Frois, Renato Amaro Zangaro, Egberto Munin

Proceedings Volume 4950, Lasers in Dentistry IX; (2003) https://doi.org/10.1117/12.476493
Event: Biomedical Optics, 2003, San Jose, CA, United States

Abstract

The present study evaluates the seal quality in apex delta of single root human teeth filled with light-curing materials (Ultrablend Calcium-hydroxide, Vitremer glass ionomer and Flow-Fill Magic composite). 45 roots prepared by the endo PTC/Dakin technique were used. All prepared samples received photopolymerization with the blue 488 nm argon ion laser light. A 200 μm optical fiber introduced into the root canal delivered 100 mW of light power to the light-curing material. The fiber tip was positioned 5 mm away from the apex. Light was applied for 20 seconds. After curing, the samples received impermeabilization with ethyl-cyanoacrylate, leaving only the apex exposed, and then immersed in a methylene-blue dye solution for 24 hours. The samples were cut longitudinally and analyzed under a stereoscopic microscope for dye infiltration. It was found that those samples sealed with Ultrablend Calcium-hydroxide or the glass ionomer presented the best results, as compared to those samples sealed with the Flow-Fill Magic composite. No statistically significant difference was observed between the group treated with Ultrablend Calcium-hydroxide and the group treated with the glass ionomer, for a significance level of 0.05.

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Luis Augusto Lupato Conrado, Iris Maria Frois, Renato Amaro Zangaro, and Egberto Munin "Root apex sealing with different filling materials photopolymerized with argon ion laser light", Proc. SPIE 4950, Lasers in Dentistry IX, (3 July 2003); https://doi.org/10.1117/12.476493

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KEYWORDS

Argon ion lasers

Glasses

Composites

Lasers in dentistry

Microscopes

Optical fibers

Photopolymerization

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