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Laser-activated irrigation using pulsed erbium lasers: principles and physical basis

Maarten Meire UGent, Dirk Poelman UGent, Aurelie Verschraege and Roeland De Moor UGent (2015) European Society of Endodontology, 17th Biennial congress, Abstracts.
abstract
Aim: To discuss the fundamentals and physical principles of laser-activated irrigation using pulsed erbium lasers. Summary: In recent years, the use of pulsed erbium lasers to activate root canal irrigants within the root canal system has witnessed increased attention. Promising in vitro results in terms of disinfection and removal of intracanal debris and smear layer underlie this interest. Operating such pulsed erbium lasers however is not always straightforward, since the laser allows many parameters to be adjusted, all of which affect the interaction between the beam and the irradiated target. When pulsed erbium lasers are operating within aqueous liquids, different physical phenomena occur around the fibre tip. First, there is the formation of vapour bubbles (cavitation) due to superheating and boiling of the liquid surrounding the fibre tip upon absorption of the laser energy. These bubbles vary considerably in size, shape, location and life span, depending on the fibre tip geometry (flat versus conical fibre tips) and pulse parameters such as pulse length and energy. A second phenomenon is the occurrence of shock waves upon implosion of the vapour bubbles, where the potential energy of the bubble is converted into acoustic energy. Third, secondary cavitation bubbles can be seen long after the laser pulse has terminated. These phenomena are explained and related to physical laws in light of its endodontic application. Key learning points: - pulsed erbium lasers produce vapour bubbles, shock waves and secondary cavitation when emitting in aqueous liquids - these explain the cleaning action within the root canal - bubble shape and dynamics are influenced by fibre tip geometry and pulse parameters
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
in
European Society of Endodontology, 17th Biennial congress, Abstracts
conference name
17th Biennial congress of the European Society of Endodontology (ESE)
conference location
Barcelona, Spain
conference start
2015-09-16
conference end
2015-09-19
language
English
UGent publication?
yes
classification
C3
id
7062733
handle
http://hdl.handle.net/1854/LU-7062733
date created
2016-01-29 13:50:48
date last changed
2016-12-19 15:35:45
@inproceedings{7062733,
  abstract     = {Aim: To discuss the fundamentals and physical principles of laser-activated irrigation using pulsed erbium lasers.
Summary: In recent years, the use of pulsed erbium lasers to activate root canal irrigants within the root canal system has witnessed increased attention. Promising in vitro results in terms of disinfection and removal of intracanal debris and smear layer underlie this interest. Operating such pulsed erbium lasers however is not always straightforward, since the laser allows many parameters to be adjusted, all of which affect the interaction between the beam and the irradiated target. 
When pulsed erbium lasers are operating within aqueous liquids, different physical phenomena occur around the fibre tip. First, there is the formation of vapour bubbles (cavitation) due to superheating and boiling of the liquid surrounding the fibre tip upon absorption of the laser energy. These bubbles vary considerably in size, shape, location and life span, depending on the fibre tip geometry (flat versus conical fibre tips) and pulse parameters such as pulse length and energy. A second phenomenon is the occurrence of shock waves upon implosion of the vapour bubbles, where the potential energy of the bubble is converted into acoustic energy. Third, secondary cavitation bubbles can be seen long after the laser pulse has terminated. 
These phenomena are explained and related to physical laws in light of its endodontic application.
Key learning points:
- pulsed erbium lasers produce vapour bubbles, shock waves and secondary cavitation when emitting in aqueous liquids
- these explain the cleaning action within the root canal
- bubble shape and dynamics are influenced by fibre tip geometry and pulse parameters},
  author       = {Meire, Maarten and Poelman, Dirk and Verschraege, Aurelie and De Moor, Roeland},
  booktitle    = {European Society of Endodontology, 17th Biennial congress, Abstracts},
  language     = {eng},
  location     = {Barcelona, Spain},
  title        = {Laser-activated irrigation using pulsed erbium lasers: principles and physical basis},
  year         = {2015},
}

Chicago
Meire, Maarten, Dirk Poelman, Aurelie Verschraege, and Roeland De Moor. 2015. “Laser-activated Irrigation Using Pulsed Erbium Lasers: Principles and Physical Basis.” In European Society of Endodontology, 17th Biennial Congress, Abstracts.
APA
Meire, Maarten, Poelman, D., Verschraege, A., & De Moor, R. (2015). Laser-activated irrigation using pulsed erbium lasers: principles and physical basis. European Society of Endodontology, 17th Biennial congress, Abstracts. Presented at the 17th Biennial congress of the European Society of Endodontology (ESE).
Vancouver
1.
Meire M, Poelman D, Verschraege A, De Moor R. Laser-activated irrigation using pulsed erbium lasers: principles and physical basis. European Society of Endodontology, 17th Biennial congress, Abstracts. 2015.
MLA
Meire, Maarten, Dirk Poelman, Aurelie Verschraege, et al. “Laser-activated Irrigation Using Pulsed Erbium Lasers: Principles and Physical Basis.” European Society of Endodontology, 17th Biennial Congress, Abstracts. 2015. Print.