In vitro evaluation of external root temperature changes during Er

YAG laser application with five different fiber optic tip withdrawal techniques

Jesus Djalma Pécora, Aldo Brugnera-Junior, Melissa Marchesan, Danilo Mathias Zanello Guerisoli, Eduardo Luiz Barbin, Fábio Heredia Seixas

Research output: Contribution to journalArticle

Abstract

This study evaluated in vitro the external temperature increase at the three root thirds using five different fiber optic tip withdrawal techniques in 50 human canines. Er:YAG laser was applied with a 50/28 fiber optic tip with 250 mJ input, 112 mJ output, 10 Hz, 1 mm from the apical foramen: group 1: each third was irradiated starting at the apex for 1 s on each wall, with the irradiation turned off between thirds; group 2: apical third irradiated without movement for 2 s and tip withdrawn with continuous radiation up to the cervical third; group 3: tip activated at the apex and removed to the canal entrance in a straight line; group 4: tip activated at the apex and removed to the canal entrance with circular movements touching all walls; group 5: tip activated at the apex and removed to the canal entrance with clockwise circular movements for 6 s and then reinserting and removing with counterclockwise circular movements for another 6 s, touching all walls. Group 1 had significantly lower external temperature (p<0.01). The middle third had the greatest temperature increase (p<0.01). We conclude that the withdrawal techniques caused an increase in external root temperature that would not damage adjacent tissues.

Original languageEnglish (US)
Pages (from-to)297-299
Number of pages3
JournalInternational Congress Series
Volume1248
Issue numberC
DOIs
StatePublished - May 1 2003
Externally publishedYes

Fingerprint

Solid-State Lasers
Temperature
Tooth Apex
Canidae
Radiation
In Vitro Techniques

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

In vitro evaluation of external root temperature changes during Er : YAG laser application with five different fiber optic tip withdrawal techniques. / Djalma Pécora, Jesus; Brugnera-Junior, Aldo; Marchesan, Melissa; Mathias Zanello Guerisoli, Danilo; Luiz Barbin, Eduardo; Heredia Seixas, Fábio.

In: International Congress Series, Vol. 1248, No. C, 01.05.2003, p. 297-299.

Research output: Contribution to journalArticle

Djalma Pécora, Jesus ; Brugnera-Junior, Aldo ; Marchesan, Melissa ; Mathias Zanello Guerisoli, Danilo ; Luiz Barbin, Eduardo ; Heredia Seixas, Fábio. / In vitro evaluation of external root temperature changes during Er : YAG laser application with five different fiber optic tip withdrawal techniques. In: International Congress Series. 2003 ; Vol. 1248, No. C. pp. 297-299.
@article{ee02cd37d49b472f8efe553b2cbb06f4,
title = "In vitro evaluation of external root temperature changes during Er: YAG laser application with five different fiber optic tip withdrawal techniques",
abstract = "This study evaluated in vitro the external temperature increase at the three root thirds using five different fiber optic tip withdrawal techniques in 50 human canines. Er:YAG laser was applied with a 50/28 fiber optic tip with 250 mJ input, 112 mJ output, 10 Hz, 1 mm from the apical foramen: group 1: each third was irradiated starting at the apex for 1 s on each wall, with the irradiation turned off between thirds; group 2: apical third irradiated without movement for 2 s and tip withdrawn with continuous radiation up to the cervical third; group 3: tip activated at the apex and removed to the canal entrance in a straight line; group 4: tip activated at the apex and removed to the canal entrance with circular movements touching all walls; group 5: tip activated at the apex and removed to the canal entrance with clockwise circular movements for 6 s and then reinserting and removing with counterclockwise circular movements for another 6 s, touching all walls. Group 1 had significantly lower external temperature (p<0.01). The middle third had the greatest temperature increase (p<0.01). We conclude that the withdrawal techniques caused an increase in external root temperature that would not damage adjacent tissues.",
author = "{Djalma P{\'e}cora}, Jesus and Aldo Brugnera-Junior and Melissa Marchesan and {Mathias Zanello Guerisoli}, Danilo and {Luiz Barbin}, Eduardo and {Heredia Seixas}, F{\'a}bio",
year = "2003",
month = "5",
day = "1",
doi = "10.1016/S0531-5131(03)00055-4",
language = "English (US)",
volume = "1248",
pages = "297--299",
journal = "International Congress Series",
issn = "0531-5131",
publisher = "Elsevier BV",
number = "C",

}

TY - JOUR

T1 - In vitro evaluation of external root temperature changes during Er

T2 - YAG laser application with five different fiber optic tip withdrawal techniques

AU - Djalma Pécora, Jesus

AU - Brugnera-Junior, Aldo

AU - Marchesan, Melissa

AU - Mathias Zanello Guerisoli, Danilo

AU - Luiz Barbin, Eduardo

AU - Heredia Seixas, Fábio

PY - 2003/5/1

Y1 - 2003/5/1

N2 - This study evaluated in vitro the external temperature increase at the three root thirds using five different fiber optic tip withdrawal techniques in 50 human canines. Er:YAG laser was applied with a 50/28 fiber optic tip with 250 mJ input, 112 mJ output, 10 Hz, 1 mm from the apical foramen: group 1: each third was irradiated starting at the apex for 1 s on each wall, with the irradiation turned off between thirds; group 2: apical third irradiated without movement for 2 s and tip withdrawn with continuous radiation up to the cervical third; group 3: tip activated at the apex and removed to the canal entrance in a straight line; group 4: tip activated at the apex and removed to the canal entrance with circular movements touching all walls; group 5: tip activated at the apex and removed to the canal entrance with clockwise circular movements for 6 s and then reinserting and removing with counterclockwise circular movements for another 6 s, touching all walls. Group 1 had significantly lower external temperature (p<0.01). The middle third had the greatest temperature increase (p<0.01). We conclude that the withdrawal techniques caused an increase in external root temperature that would not damage adjacent tissues.

AB - This study evaluated in vitro the external temperature increase at the three root thirds using five different fiber optic tip withdrawal techniques in 50 human canines. Er:YAG laser was applied with a 50/28 fiber optic tip with 250 mJ input, 112 mJ output, 10 Hz, 1 mm from the apical foramen: group 1: each third was irradiated starting at the apex for 1 s on each wall, with the irradiation turned off between thirds; group 2: apical third irradiated without movement for 2 s and tip withdrawn with continuous radiation up to the cervical third; group 3: tip activated at the apex and removed to the canal entrance in a straight line; group 4: tip activated at the apex and removed to the canal entrance with circular movements touching all walls; group 5: tip activated at the apex and removed to the canal entrance with clockwise circular movements for 6 s and then reinserting and removing with counterclockwise circular movements for another 6 s, touching all walls. Group 1 had significantly lower external temperature (p<0.01). The middle third had the greatest temperature increase (p<0.01). We conclude that the withdrawal techniques caused an increase in external root temperature that would not damage adjacent tissues.

UR - http://www.scopus.com/inward/record.url?scp=85023097446&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85023097446&partnerID=8YFLogxK

U2 - 10.1016/S0531-5131(03)00055-4

DO - 10.1016/S0531-5131(03)00055-4

M3 - Article

VL - 1248

SP - 297

EP - 299

JO - International Congress Series

JF - International Congress Series

SN - 0531-5131

IS - C

ER -