Efficacy of diode laser and sonic agitation of Chlorhexidine and Silver-nanoparticles in infected root canals

Authors

  • Latifa Mohamed Abdelgawad Medical Laser Applications Department - National Institute of Laser Enhanced Sciences - Cairo University - Cairo - Egypt. https://orcid.org/0000-0002-1483-5274
  • Niven Asmail Medical Laser Applications Department - National Institute of Laser Enhanced Sciences - Cairo University - Cairo - Egypt.
  • Somia Abdel Latif Microbiology and Molecular Biology Department - Faculty of Medicine - Cairo University – Cairo - Egypt.
  • Ali Mohamed Safaan Medical Laser Applications Department - National Institute of Laser Enhanced Sciences - Cairo University - Cairo - Egypt.

DOI:

https://doi.org/10.14295/bds.2020.v23i3.1989

Abstract

Objective: To assess the efficacy of agitation of chlorohexidine (CHX) and Silver nanoparticles “AgNps” with 810nm diode laser or sonic endoactivator compared to side –vented needle on infected root canals with Enterococcus “E” Faecalis biofilms. Material and Methods: Sixty-five extracted human premolars with single oval canals were instrumented by protaper system up to F3. Biofilms of E. faecalis were generated based on a previously established protocol. Two teeth were used to check the biofilm formation, then the remaining Teeth were randomly divided into three equal experimental groups according to agitation techniques used: group 1 (810 nm diode laser with 1 watt), group 2 (sonic endoactivator) and group 3 (Side vented needle). Each group was further divided into three equal subgroups according to the irrigant solution into; subgroup A: chlorohexidine, subgroup B: silver nanoparticles and subgroup C: distilled water: Confocal laser scanning microscopy “CLSM” was used to assess bacterial viability. Data were analyzed by appropriate statistical analyses with P = 0.05. Results: Regarding the activation method, all groups had a significantly high percentage of dead bacteria (P < 0.05). However, Laser was significantly the highest and Endoactivator the least (P < = 0.001). Diode laser agitation of AgNps irrigant showed the highest reduction percentage of bacteria (78.1%) with a significant difference with both CHX and water irrigation, Conclusion: Under the condition of the present study; results reinforced that laser activation is a useful adjunct, 810 nm diode laser agitation of AgNps or chlorhexidine was more effective in disinfection of oval root canals than endoactivator and side vented needle techniques.

Keywords

Dentinal infection; Silver-nanoparticles; chlorohexidine; agitation; Diode Laser; Sonic endoactivator.

 

Author Biography

Latifa Mohamed Abdelgawad, Medical Laser Applications Department - National Institute of Laser Enhanced Sciences - Cairo University - Cairo - Egypt.

professor in medical laser applications deparatment ,national instute of laser enhanced siences,cairo university

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Published

2020-06-30

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Clinical or Laboratorial Research Manuscript