In vitro evaluation of smear layer removal by Er:YAG laser application with five different fiberoptic tip withdrawal techniques

Aldo Brugnera, Danilo M.Zanello Guerisoli, Melissa Marchesan, Julio Cesar E. Spano, Jesus D. Pecora

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

This study evaluated smear layer removal in apical and middle root thirds using five different fiberoptic tip withdrawal techniques. Thirty human canines were instrumented using 2.5% sodium hypochlorite, with a final irrigation of distilled water, and divided randomly in 6 different groups. En:YAG laser was applied in 5 groups with a 50/28 fiberoptic tip (250 mJ input, 112 mJ output, 10 Hz, 1 mm from apex) with distinct withdrawal techniques. Group 6 did not receive laser irradiation. Two pictures of each root canal (middle and apical thirds) were obtained under the SEM and analyzed for the amount of smear layer. Results showed statistical differences (p<0.05) between treatments and significant differences (p<0.01) between radicular thirds. It can be concluded that 1) all withdrawal techniques produced the same results on smear layer removal and 2) the middle third presented less smear layer than the apical third after Er:YAG laser irradiation.

Original languageEnglish (US)
Pages (from-to)188-194
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4950
DOIs
StatePublished - Sep 29 2003
EventLasers in Dentistry IX - San Jose, CA, United States
Duration: Jan 26 2003Jan 27 2003

Fingerprint

Er:YAG
Laser applications
smear
laser applications
Laser beam effects
Fiber Optics
YAG lasers
Laser
Sodium Hypochlorite
evaluation
Evaluation
Canals
Irrigation
Irradiation
Sodium
Roots
irrigation
Scanning electron microscopy
irradiation
canals

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 by Er:YAG laser application with five different fiberoptic tip withdrawal techniques. / Brugnera, Aldo; Guerisoli, Danilo M.Zanello; Marchesan, Melissa; Spano, Julio Cesar E.; Pecora, Jesus D.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 4950, 29.09.2003, p. 188-194.

Research output: Contribution to journalConference article

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AU - Spano, Julio Cesar E.

AU - Pecora, Jesus D.

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N2 - This study evaluated smear layer removal in apical and middle root thirds using five different fiberoptic tip withdrawal techniques. Thirty human canines were instrumented using 2.5% sodium hypochlorite, with a final irrigation of distilled water, and divided randomly in 6 different groups. En:YAG laser was applied in 5 groups with a 50/28 fiberoptic tip (250 mJ input, 112 mJ output, 10 Hz, 1 mm from apex) with distinct withdrawal techniques. Group 6 did not receive laser irradiation. Two pictures of each root canal (middle and apical thirds) were obtained under the SEM and analyzed for the amount of smear layer. Results showed statistical differences (p<0.05) between treatments and significant differences (p<0.01) between radicular thirds. It can be concluded that 1) all withdrawal techniques produced the same results on smear layer removal and 2) the middle third presented less smear layer than the apical third after Er:YAG laser irradiation.

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