Efficacy of photon induced photoacoustic streaming ( PIPS ) on root canals infected with Enterococcus faecalis : A pilot study
Jaramillo DE, Aprecio RM, Angelov N, DiVito E, McClammy T V.Endod Pr. 2012;7(3):28-32.
Abstract:
Eradication of microorganisms from an infected root canal before obturation is a primary focus of endodontic treatment, as well as the best predictor for the long-term success of the endodontic therapy. The purpose of this in vitro laboratory study was to evaluate the efficacy of a new tapered and stripped Er:YAG laser tip using PIPS (Photon Induced Photoacoustic Streaming) in root canals infected with Enterococcus faecalis (ATCC4082).
Materials and Methods:
Twenty-four freshly extracted single-rooted human teeth were collected and inoculated with E. faecalis. After 4 weeks, the teeth were divided in four groups, two experimental, one positive, and one negative group. Laser treatment was performed for a period of 20 seconds with 6% sodium hypochlorite in groups 1 and 2, while PBS was used for group 3 and 4. Furthermore, dentin debris was produced, and colony-forming units were determined.
Results:
The combinations of 20 seconds laser activated irrigation with Er:YAG Laser and 6% sodium hypochlorite showed 100% inhibition using PIPS of growth of E. faecalis compared to 50% inhibition with the combination of Er:YAG Laser and PBS.
Conclusions:
The PIPS technology is efficient tool in elimination of Enterococcus faecalis from infected root canals.
