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Effect of ER:YAG and diode laser irradiation on the root surface: morphological and thermal analysis.
- Source :
-
Journal of periodontology [J Periodontol] 2003 Jun; Vol. 74 (6), pp. 838-43. - Publication Year :
- 2003
-
Abstract
- Background: The aim of the present study was to compare the effects of Er:YAG and diode laser treatments of the root surface on intrapulpal temperature after scaling and root planing with hand instruments.<br />Methods: Fifteen extracted single-rooted teeth were scaled and root planed with hand instruments. The teeth were divided into 3 groups of 5 each and irradiated on their buccal and lingual surfaces: group A: Er:YAG laser, 2.94 microm/100 mJ/10 Hz/30 seconds; group B: diode laser, 810 nm/1.0 W/0.05 ms/30 seconds; group C: diode laser, 810 nm/1.4 W/0.05 ms/30 seconds. The temperature was monitored by means of a type T thermocouple (copper-constantan) positioned in the pulp chamber to assess pulpal temperature during and before irradiation. Afterwards, the specimens were longitudinally sectioned, and the buccal and lingual surfaces of each root were analyzed by scanning electron microscopy.<br />Results: In the Er:YAG laser group, the thermal analysis revealed an average temperature of -2.2 +/- 1.5 degrees C, while in the diode laser groups, temperatures were 1.6 +/- 0.8 degrees C at 1.0 W and 3.3 +/- 1.0 degrees C at 1.4 W. Electronic micrographs revealed that there were no significant morphological changes, such as charring, melting, or fusion, in any group, although the specimens were found to be more irregular in the Er:YAG laser group.<br />Conclusions: The application of Er:YAG and diode lasers at the utilized parameters did not induce high pulpal temperatures. Root surface irregularities were more pronounced after irradiation with an Er:YAG laser than with a diode laser.
- Subjects :
- Aluminum Silicates
Body Temperature radiation effects
Dental Cementum radiation effects
Dental Cementum ultrastructure
Dental Pulp physiopathology
Dental Pulp radiation effects
Dental Pulp Cavity physiopathology
Dental Scaling
Erbium
Humans
Lasers classification
Microscopy, Electron, Scanning
Root Planing
Smear Layer
Thermodynamics
Thermometers
Tooth Root ultrastructure
Yttrium
Laser Therapy
Tooth Root radiation effects
Subjects
Details
- Language :
- English
- ISSN :
- 0022-3492
- Volume :
- 74
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Journal of periodontology
- Publication Type :
- Academic Journal
- Accession number :
- 12886994
- Full Text :
- https://doi.org/10.1902/jop.2003.74.6.838