Cervical microleakage in root canals treated with Er

YAG and Nr:YAG laser

Emilio Carlos Sponchiado, Lidiany Azevedo, Melissa Marchesan, Aldo Brugnera, Yara T. Silva-Sousa, Edson Alfredo, Manoel D Sousa Neto

Research output: Contribution to journalConference article

Abstract

Cervical microleakage was evaluated in sealed root canals previously treated with Er:YAG and Nd:YAG lasers. Ninety-two single-rooted maxillary human canines were prepared with the crown-down technique and irrigated with distilled and deionized water. The samples were distributed randomly into 9 groups of 10 teeth each. One tooth was used as a positive control and one as a negative control. In group I, 1.2 ml of EOT AC was applied during 5 min. In groups II to V, radicular dentine was irradiated with Er:YAG laser (Opus 20, Opus Dent, Israel) at the following parameters: 200 mJ and 8 Hz, 200 mJ and 16 Hz, 400 mJ and 8 Hz, or 400 mJ and 16Hz, respectively, for 60 s. In groups VI to IX, radicular dentine was irradiated with Nd:YAG laser (Fotona Medical Lasers, Slovenia) at 10 Hz and 1 W, 10 Hz and 2 W, 15 Hz and 1 W, or 15 Hz and 2 W, respectively, for 60 s. The canals were then sealed by the lateral condensation technique with an epoxy resin-based sealer. The roots were immersed in India ink for 15 days and then cleared to visualize the level of cervical microleakage with a measurement microscope. The results were evaluated by the Kruskal-Wallis test, which showed no statistical significance (p>0.01) for parameter variations of the Er:YAG laser when compared to the control group. However, the increase in frequency and potency for Nd:YAG laser decreased the microleakage when compared to the control group.

Original languageEnglish (US)
Article number31
Pages (from-to)140-143
Number of pages4
JournalProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume5687
DOIs
StatePublished - Jul 21 2005
Externally publishedYes

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canals
Dental Pulp Cavity
Solid-State Lasers
Canals
yttrium-aluminum garnet
YAG lasers
Lasers
Dentin
teeth
Tooth
Epoxy Resins
Slovenia
Control Groups
sealers
Israel
Crowns
Deionized water
inks
epoxy resins
Canidae

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Sponchiado, E. C., Azevedo, L., Marchesan, M., Brugnera, A., Silva-Sousa, Y. T., Alfredo, E., & Neto, M. D. S. (2005). Cervical microleakage in root canals treated with Er: YAG and Nr:YAG laser. Progress in Biomedical Optics and Imaging - Proceedings of SPIE, 5687, 140-143. [31]. https://doi.org/10.1117/12.611285

Cervical microleakage in root canals treated with Er : YAG and Nr:YAG laser. / Sponchiado, Emilio Carlos; Azevedo, Lidiany; Marchesan, Melissa; Brugnera, Aldo; Silva-Sousa, Yara T.; Alfredo, Edson; Neto, Manoel D Sousa.

In: Progress in Biomedical Optics and Imaging - Proceedings of SPIE, Vol. 5687, 31, 21.07.2005, p. 140-143.

Research output: Contribution to journalConference article

Sponchiado, Emilio Carlos ; Azevedo, Lidiany ; Marchesan, Melissa ; Brugnera, Aldo ; Silva-Sousa, Yara T. ; Alfredo, Edson ; Neto, Manoel D Sousa. / Cervical microleakage in root canals treated with Er : YAG and Nr:YAG laser. In: Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 2005 ; Vol. 5687. pp. 140-143.
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abstract = "Cervical microleakage was evaluated in sealed root canals previously treated with Er:YAG and Nd:YAG lasers. Ninety-two single-rooted maxillary human canines were prepared with the crown-down technique and irrigated with distilled and deionized water. The samples were distributed randomly into 9 groups of 10 teeth each. One tooth was used as a positive control and one as a negative control. In group I, 1.2 ml of EOT AC was applied during 5 min. In groups II to V, radicular dentine was irradiated with Er:YAG laser (Opus 20, Opus Dent, Israel) at the following parameters: 200 mJ and 8 Hz, 200 mJ and 16 Hz, 400 mJ and 8 Hz, or 400 mJ and 16Hz, respectively, for 60 s. In groups VI to IX, radicular dentine was irradiated with Nd:YAG laser (Fotona Medical Lasers, Slovenia) at 10 Hz and 1 W, 10 Hz and 2 W, 15 Hz and 1 W, or 15 Hz and 2 W, respectively, for 60 s. The canals were then sealed by the lateral condensation technique with an epoxy resin-based sealer. The roots were immersed in India ink for 15 days and then cleared to visualize the level of cervical microleakage with a measurement microscope. The results were evaluated by the Kruskal-Wallis test, which showed no statistical significance (p>0.01) for parameter variations of the Er:YAG laser when compared to the control group. However, the increase in frequency and potency for Nd:YAG laser decreased the microleakage when compared to the control group.",
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