Basic ResearchEffect of Agitation of EDTA with 808-Nanometer Diode Laser on Removal of Smear Layer
Section snippets
Laser System
An 808-nm wavelength gallium-aluminum-arsenide diode laser (Doctor Smile, Lambda Scientifica Srl, Vicenza, Italy) system equipped with a 20-W power source was used. The laser delivery system used in the study was a fiber-optic cable with a 300-μm size at 2 W in the pulsed mode (10 ms on/10 ms off). The actual power of the parallel fiber-optic tip was 285.71 W/cm2.
Specimen Preparation
The protocol of this study was approved by the Research Ethics Committee of Izmir Katip Celebi University, Izmir, Turkey. The study
Results
The number of open dentinal tubules in 120 photomicrographs was counted using Adobe Photoshop software. The means and standard deviations of the open dentinal tubules in the middle and apical thirds were 126.5 ± 91.09 and 51.87 ± 58.70, respectively. According to the statistical analysis, the middle thirds contained a higher number of open dentinal tubules than the apical thirds of the root canals (P < .001).
In the middle third of the root canals, the means and standard deviations of the open
Discussion
Effective chemomechanical preparation of the apical region is especially important for successful root canal treatment. Syringe irrigation is a standard procedure for root canal irrigation, but this technique is not efficient in the apical third of the root canal. It is difficult to completely remove the residual smear layer, particularly in the apical third of the root, because the smaller size of the apical third compared with the other thirds impedes the circulation and action of the
Conclusion
The null hypothesis was rejected. Within the limitations of this study, it can be concluded that 20 seconds of agitation of EDTA with an 808-nm diode laser improved the efficacy of EDTA in removing the smear layer.
Acknowledgment
The authors deny any conflicts of interest related to this study.
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