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Avances en Periodoncia e Implantología Oral

versión impresa ISSN 1699-6585

Resumen

CACCIANIGA, G et al. Bactericidal effects of diode laser in periodontology. Avances en Periodoncia [online]. 2007, vol.19, n.3, pp.131-140. ISSN 1699-6585.

Laser in odontology, thanks to its antibacterial capabilities, haemostatic and of minor operating symptomatology, finds a vast field of application within the framework of periodontal therapy. In this study has been tested the effectiveness of a protocol that foresees the associated use of laser irradiation and hydrogen peroxide with the goal of reducing the bacterial charge of stocks commonly present in the active periodontal pockets and resistant to the bactericide action of laser irradiation alone such as Prevotella intermedia, Fusobacterium nucleatum, Peptostreptococcus micron. The laboratory method used foresees the following protocol: each bacterial suspension has been exposed to hydrogen peroxide at 3% concentrations and it has been irradiated with laser for 10, 15 or 20 seconds, using sterile 1.5 ml Eppendorf tubes. The results confirm the higher bactericide effectiveness of the combined action of hydrogen peroxide and laser. The microbiological cultivations carried out reveal how, in spite of the bactericide effect, the laser has an insufficient action on bacterial stocks tested if it isn´t associated with hydrogen peroxide. Particularly in the case of the Prevotella intermedia or the Fusobacterium nucleatum the use of just hydrogen peroxide at 3% has offered better results than the laser irradiation alone while the association of both treatments has always offered optimal results. In the case of the Peptostreptococcus micron the use of hydrogen peroxide and laser separately has offered an insufficient reduction of the bacterial count while the association of treatments has increased their bactericide action.

Palabras clave : Diode laser; bacteria; hydrogen peroxide.

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