In vitro evaluation of smear layer removal of root canals by irradiation with Er:YAG laser after Ni-Ti rotary instrumentation

Alexandre Capelli, Aldo Brugnera, Fábio Heredia Seixas, Melissa Marchesan, Danilo M.Zanello Guerisoli, Jesus D. Pecora

Research output: Contribution to journalConference article

Abstract

The smear layer removal of root canal walls irradiated with Er:YAG laser after nickel-titanium rotary instrumentation was evaluated by scanning electron microscopy. Thirty mesial roots of human mandibular molars were selected and randomly distributed in three groups, according to treatment. Group 1 was instrumented with rotary nickel-titanium files 1 mm from the anatomical apex and irrigated with 2.5% sodium hypochlorite. Group 2 received the same treatment as Group 1, but after instrumentation the root canals were irradiated with Er:YAG laser. Group 3 received the same treatment as Group 1, but irrigation was performed with 2.5% sodium hypochlorite alternated with 17% EDTA during instrumentation. Photomicrographs were obtained from middle and apical thirds and submitted to qualitative evaluation. Statistical analysis showed that 2.5% sodium hypochlorite associated with 17% EDTA (Group 3) removed smear layer more efficiently than 2.5% sodium hypochlorite alone (Group 1) (p<0.05). Root canals irradiated with Er:YAG laser occupied an intermediary position regarding smear layer removal. There were no statistical differences between the evaluated radicular thirds (p>0.05).

Original languageEnglish (US)
Pages (from-to)170-176
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4950
DOIs
StatePublished - Sep 30 2003
EventLasers in Dentistry IX - San Jose, CA, United States
Duration: Jan 26 2003Jan 27 2003

Fingerprint

Er:YAG
Sodium Hypochlorite
smear
canals
Canals
Instrumentation
Irradiation
YAG lasers
Sodium
Roots
Laser
irradiation
Lasers
evaluation
Ethylenediaminetetraacetic acid
Evaluation
Edetic Acid
Titanium
Nickel
sodium

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

In vitro evaluation of smear layer removal of root canals by irradiation with Er:YAG laser after Ni-Ti rotary instrumentation. / Capelli, Alexandre; Brugnera, Aldo; Seixas, Fábio Heredia; Marchesan, Melissa; Guerisoli, Danilo M.Zanello; Pecora, Jesus D.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 4950, 30.09.2003, p. 170-176.

Research output: Contribution to journalConference article

Capelli, Alexandre ; Brugnera, Aldo ; Seixas, Fábio Heredia ; Marchesan, Melissa ; Guerisoli, Danilo M.Zanello ; Pecora, Jesus D. / In vitro evaluation of smear layer removal of root canals by irradiation with Er:YAG laser after Ni-Ti rotary instrumentation. In: Proceedings of SPIE - The International Society for Optical Engineering. 2003 ; Vol. 4950. pp. 170-176.
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abstract = "The smear layer removal of root canal walls irradiated with Er:YAG laser after nickel-titanium rotary instrumentation was evaluated by scanning electron microscopy. Thirty mesial roots of human mandibular molars were selected and randomly distributed in three groups, according to treatment. Group 1 was instrumented with rotary nickel-titanium files 1 mm from the anatomical apex and irrigated with 2.5{\%} sodium hypochlorite. Group 2 received the same treatment as Group 1, but after instrumentation the root canals were irradiated with Er:YAG laser. Group 3 received the same treatment as Group 1, but irrigation was performed with 2.5{\%} sodium hypochlorite alternated with 17{\%} EDTA during instrumentation. Photomicrographs were obtained from middle and apical thirds and submitted to qualitative evaluation. Statistical analysis showed that 2.5{\%} sodium hypochlorite associated with 17{\%} EDTA (Group 3) removed smear layer more efficiently than 2.5{\%} sodium hypochlorite alone (Group 1) (p<0.05). Root canals irradiated with Er:YAG laser occupied an intermediary position regarding smear layer removal. There were no statistical differences between the evaluated radicular thirds (p>0.05).",
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