Heat generated by Er:YAG laser in the pulp chamber of teeth submitted to removal of dental tissue and composite resin

Fátima Zanin, Aldo Brugnera, Jesus D. Pécora, Julio Spanó Antonio Pinheiro, Eduardo Barbin, Melissa Marchesan

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

The knowledge about and control of thermal energy produced by Er:YAG laser after irradiating hard dental tissues and compound resin is important because the pulp, like all vital biological tissue, has a certain capacity for supporting stimulus. The objective of this study was to analyze the thermal variation generated by Er:YAG laser (λ= 2.94μm) during the preparation of a Class I cavity in the dental structure and in the removal of microhybrid Z100® (3M) compound resin. An evaluation was made of 30 maxillary human pre-molar teeth from the bank of the Endodontic Laboratory Center of Ribeirão Preto Dental School, Brasil. The sample was divided into 6 groups of 5 teeth each: Group 1, preparation of Class I cavity with Er:YAG laser (350mJ, 3Hz, 343 impulses, 120J, 113 seconds); Group 2, preparation of Class I cavity with Er:YAG laser (350mJ, 4Hz, 343 impulses, 120J, 81 seconds); Group 3, preparation of Class I cavity with Er:YAG laser (350mJ, 6Hz, 343 impulses, 120J, 58 seconds); Group 4, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 3Hz, 258 impulses, 90J, 85 seconds); Group 5, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 4Hz, 258 impulses, 90J, 67 seconds); Group 6, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 6Hz, 258 impulses, 90J, 42 seconds). The laser used was KaVo Key 2 (Biberach, Germany), λ = 2,94μm, P = 3 Watts, pulse duration of 250μs, with air-water cooling. The increase in temperature during dental preparation and the removal of the compound resin was evaluated by means of a Tektronix DMM916 Thermocouple (Consitec, Brasil). The results showed that the application of laser for the removal of the hard dental tissues and for the removal of compound resins with the pulse frequencies 3, 4 and 6Hz did not generate heating greater than 3.1°C and remained within the histopathological limits permitted for pulp tissue (5.5°C) and there was a significant statistical difference between the heat generated by the application of laser in the removal of the hard dental tissues and in the removal of compound resins (p < 0.01). The average increase in temperature of the compound resin component was greater than the tooth.

Original languageEnglish (US)
Pages (from-to)109-113
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5313
DOIs
StatePublished - Oct 27 2004
EventProgress in Biomedical Optics and Imaging - Lasers in Dentistry X - San Jose, CA, United States
Duration: Jan 25 2004Jan 25 2004

Fingerprint

Er:YAG
Composite Resins
teeth
resins
Pulp
YAG lasers
Resins
Heat
chambers
Composite
Tissue
Laser
heat
Preparation
composite materials
Lasers
impulses
preparation
Composite materials
Impulse

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

Heat generated by Er:YAG laser in the pulp chamber of teeth submitted to removal of dental tissue and composite resin. / Zanin, Fátima; Brugnera, Aldo; Pécora, Jesus D.; Antonio Pinheiro, Julio Spanó; Barbin, Eduardo; Marchesan, Melissa.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5313, 27.10.2004, p. 109-113.

Research output: Contribution to journalConference article

Zanin, Fátima ; Brugnera, Aldo ; Pécora, Jesus D. ; Antonio Pinheiro, Julio Spanó ; Barbin, Eduardo ; Marchesan, Melissa. / Heat generated by Er:YAG laser in the pulp chamber of teeth submitted to removal of dental tissue and composite resin. In: Proceedings of SPIE - The International Society for Optical Engineering. 2004 ; Vol. 5313. pp. 109-113.
@article{764143b9b2564e569f074409a490fcea,
title = "Heat generated by Er:YAG laser in the pulp chamber of teeth submitted to removal of dental tissue and composite resin",
abstract = "The knowledge about and control of thermal energy produced by Er:YAG laser after irradiating hard dental tissues and compound resin is important because the pulp, like all vital biological tissue, has a certain capacity for supporting stimulus. The objective of this study was to analyze the thermal variation generated by Er:YAG laser (λ= 2.94μm) during the preparation of a Class I cavity in the dental structure and in the removal of microhybrid Z100{\circledR} (3M) compound resin. An evaluation was made of 30 maxillary human pre-molar teeth from the bank of the Endodontic Laboratory Center of Ribeir{\~a}o Preto Dental School, Brasil. The sample was divided into 6 groups of 5 teeth each: Group 1, preparation of Class I cavity with Er:YAG laser (350mJ, 3Hz, 343 impulses, 120J, 113 seconds); Group 2, preparation of Class I cavity with Er:YAG laser (350mJ, 4Hz, 343 impulses, 120J, 81 seconds); Group 3, preparation of Class I cavity with Er:YAG laser (350mJ, 6Hz, 343 impulses, 120J, 58 seconds); Group 4, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 3Hz, 258 impulses, 90J, 85 seconds); Group 5, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 4Hz, 258 impulses, 90J, 67 seconds); Group 6, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 6Hz, 258 impulses, 90J, 42 seconds). The laser used was KaVo Key 2 (Biberach, Germany), λ = 2,94μm, P = 3 Watts, pulse duration of 250μs, with air-water cooling. The increase in temperature during dental preparation and the removal of the compound resin was evaluated by means of a Tektronix DMM916 Thermocouple (Consitec, Brasil). The results showed that the application of laser for the removal of the hard dental tissues and for the removal of compound resins with the pulse frequencies 3, 4 and 6Hz did not generate heating greater than 3.1°C and remained within the histopathological limits permitted for pulp tissue (5.5°C) and there was a significant statistical difference between the heat generated by the application of laser in the removal of the hard dental tissues and in the removal of compound resins (p < 0.01). The average increase in temperature of the compound resin component was greater than the tooth.",
author = "F{\'a}tima Zanin and Aldo Brugnera and P{\'e}cora, {Jesus D.} and {Antonio Pinheiro}, {Julio Span{\'o}} and Eduardo Barbin and Melissa Marchesan",
year = "2004",
month = "10",
day = "27",
doi = "10.1117/12.537431",
language = "English (US)",
volume = "5313",
pages = "109--113",
journal = "Proceedings of SPIE - The International Society for Optical Engineering",
issn = "0277-786X",
publisher = "SPIE",

}

TY - JOUR

T1 - Heat generated by Er:YAG laser in the pulp chamber of teeth submitted to removal of dental tissue and composite resin

AU - Zanin, Fátima

AU - Brugnera, Aldo

AU - Pécora, Jesus D.

AU - Antonio Pinheiro, Julio Spanó

AU - Barbin, Eduardo

AU - Marchesan, Melissa

PY - 2004/10/27

Y1 - 2004/10/27

N2 - The knowledge about and control of thermal energy produced by Er:YAG laser after irradiating hard dental tissues and compound resin is important because the pulp, like all vital biological tissue, has a certain capacity for supporting stimulus. The objective of this study was to analyze the thermal variation generated by Er:YAG laser (λ= 2.94μm) during the preparation of a Class I cavity in the dental structure and in the removal of microhybrid Z100® (3M) compound resin. An evaluation was made of 30 maxillary human pre-molar teeth from the bank of the Endodontic Laboratory Center of Ribeirão Preto Dental School, Brasil. The sample was divided into 6 groups of 5 teeth each: Group 1, preparation of Class I cavity with Er:YAG laser (350mJ, 3Hz, 343 impulses, 120J, 113 seconds); Group 2, preparation of Class I cavity with Er:YAG laser (350mJ, 4Hz, 343 impulses, 120J, 81 seconds); Group 3, preparation of Class I cavity with Er:YAG laser (350mJ, 6Hz, 343 impulses, 120J, 58 seconds); Group 4, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 3Hz, 258 impulses, 90J, 85 seconds); Group 5, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 4Hz, 258 impulses, 90J, 67 seconds); Group 6, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 6Hz, 258 impulses, 90J, 42 seconds). The laser used was KaVo Key 2 (Biberach, Germany), λ = 2,94μm, P = 3 Watts, pulse duration of 250μs, with air-water cooling. The increase in temperature during dental preparation and the removal of the compound resin was evaluated by means of a Tektronix DMM916 Thermocouple (Consitec, Brasil). The results showed that the application of laser for the removal of the hard dental tissues and for the removal of compound resins with the pulse frequencies 3, 4 and 6Hz did not generate heating greater than 3.1°C and remained within the histopathological limits permitted for pulp tissue (5.5°C) and there was a significant statistical difference between the heat generated by the application of laser in the removal of the hard dental tissues and in the removal of compound resins (p < 0.01). The average increase in temperature of the compound resin component was greater than the tooth.

AB - The knowledge about and control of thermal energy produced by Er:YAG laser after irradiating hard dental tissues and compound resin is important because the pulp, like all vital biological tissue, has a certain capacity for supporting stimulus. The objective of this study was to analyze the thermal variation generated by Er:YAG laser (λ= 2.94μm) during the preparation of a Class I cavity in the dental structure and in the removal of microhybrid Z100® (3M) compound resin. An evaluation was made of 30 maxillary human pre-molar teeth from the bank of the Endodontic Laboratory Center of Ribeirão Preto Dental School, Brasil. The sample was divided into 6 groups of 5 teeth each: Group 1, preparation of Class I cavity with Er:YAG laser (350mJ, 3Hz, 343 impulses, 120J, 113 seconds); Group 2, preparation of Class I cavity with Er:YAG laser (350mJ, 4Hz, 343 impulses, 120J, 81 seconds); Group 3, preparation of Class I cavity with Er:YAG laser (350mJ, 6Hz, 343 impulses, 120J, 58 seconds); Group 4, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 3Hz, 258 impulses, 90J, 85 seconds); Group 5, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 4Hz, 258 impulses, 90J, 67 seconds); Group 6, removal of compound resin from Class I preparation with Er:YAG laser (350mJ, 6Hz, 258 impulses, 90J, 42 seconds). The laser used was KaVo Key 2 (Biberach, Germany), λ = 2,94μm, P = 3 Watts, pulse duration of 250μs, with air-water cooling. The increase in temperature during dental preparation and the removal of the compound resin was evaluated by means of a Tektronix DMM916 Thermocouple (Consitec, Brasil). The results showed that the application of laser for the removal of the hard dental tissues and for the removal of compound resins with the pulse frequencies 3, 4 and 6Hz did not generate heating greater than 3.1°C and remained within the histopathological limits permitted for pulp tissue (5.5°C) and there was a significant statistical difference between the heat generated by the application of laser in the removal of the hard dental tissues and in the removal of compound resins (p < 0.01). The average increase in temperature of the compound resin component was greater than the tooth.

UR - http://www.scopus.com/inward/record.url?scp=5644271703&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=5644271703&partnerID=8YFLogxK

U2 - 10.1117/12.537431

DO - 10.1117/12.537431

M3 - Conference article

VL - 5313

SP - 109

EP - 113

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

ER -