In vitro irradiation of infected root canals with a diode laser: results of microbiologic, infrared spectrometric, and stain penetration examinations.
Quintessence Int
; 28(3): 205-9, 1997 Mar.
Article
in En
| MEDLINE
| ID: mdl-9452688
ABSTRACT
This study aimed to examine the suitability of the diode laser with a wavelength of 810 nm for reducing bacteria in root canals. Forty-four extracted, endodontically prepared teeth were inoculated with Escherichia coli and Streptococcus faecalis. No bacterial growth was observed when the teeth were irradiated at an output power of 4 W and a pulse rate of 10 milliseconds, with breaks of 10 milliseconds between the irradiations. Exposure time was five times 5 seconds. Infrared spectroscopic examinations revealed that irradiation at 4 W under even circling movements resulted in a maximum rise in temperature of 6 degrees C on the root surface. Stain penetration tests and scanning electron microscopic examinations revealed complete closure of the dentinal tubules on the irradiated root canal walls.
Search on Google
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Disinfection
/
Dental Pulp Cavity
/
Laser Therapy
Limits:
Humans
Language:
En
Journal:
Quintessence Int
Year:
1997
Type:
Article
Affiliation country:
Austria