Details

Autor(en) / Beteiligte

• Noiri, Yuichiro, DDS, PhD
• Katsumoto, Tetsushi, DDS, PhD
• Azakami, Hiroyuki, PhD
• Ebisu, Shigeyuki, DDS, PhD

Titel

Effects of Er:YAG Laser Irradiation on Biofilm-forming Bacteria Associated with Endodontic Pathogens In Vitro

Ist Teil von

• Journal of endodontics, 2008-07, Vol.34 (7), p.826-829

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2008

Quelle

MEDLINE

Beschreibungen/Notizen

• Abstract With the development of dental laser delivery systems that can enter into the root canals, it is possible to use Er:YAG lasers to remove the residual biofilm associated with infected root canals. We examined their effects against biofilms made of Actinomyces naeslundii , Enterococcus faecalis , Lactobacillus casei , Propionibacterium acnes , Fusobacterium nucleatum , Porphyromonas gingivalis , or Prevotella nigrescens in vitro . After Er:YAG laser irradiation with energy densities ranging between 0.38–0.98 J/cm2 , the biofilm samples on hydroxyapatite disks were quantitatively and morphologically evaluated. The Er:YAG laser was effective against biofilms of 6 of the bacterial species examined, with the exception of those formed by L. casei . After irradiation, the numbers of viable cells in the biofilms were significantly decreased, whereas atrophic changes in bacterial cells and reductions in biofilm cell density were seen morphologically. Er: YAG lasers might be suitable for clinical application as a suppressive and removal device of biofilms in endodontic treatments.