Nd:YAG激光和Er:YAG激光对根管内粪肠球菌杀灭效果的研究

Abstract

Abstract: Objective　To evaluate the antimicrobial effect of Nd:YAG laser, Er:YAG laser and their combination on enterococcus faecalis in root canals. Methods　Teeth infected with enterococcus faecalis were randomly divided into five groups. Group A: normal saline (NS) irrigation; Group B: 1%NaClO irrigation; Group C: Nd:YAG laser; Group D: Er:YAG laser; Group E: Nd:YAG + Er:YAG laser. After treatment, teeth selected randomly from each group were observed using scanning electron microscopy (SEM). Bacteria were collected from the remaining root canals and cultured. Results　Among five groups, group A achieved least bacteria reduction while group B had best antimicrobial effect, followed by group E. Except for the similar bactericidal rate between group C and group D (P> 0.05), there was a significant difference among the groups (P <0.05). Conclusions　Nd:YAG laser, Er:YAG laser and their combination are effective in root canal disinfection and can been seen as supplements to routine methods.

Key words: Nd:YAG laser, Er:YAG laser, root canal disinfection

CLC Number:

R781.3

References

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Antimicrobial effect of Nd:YAG laser and Er:YAG laser on enterococcus faecalis in root canals

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