Evaluation of New System for Root Canal Irrigation to Conventional: An Ex Vivo Study

Dr. Prashanth, Dr. Vasundhara Shivanna. Dept. Of Conservative Dentistry & Endodontics, College Of Dental Sciences, Davangere.

AIMS AND OBJECTIVES OF STUDY:
To compare the efficacy of the LightSpeedLSX^TM with and without the EndoVac^TM irrigation System to debride root canals at 1mm and 3mm from working length.

MATERIAL AND METHODS:
22 freshly extracted intact non carious human mandibular premolars with complete root formation were collected for the study from Department of Oral & maxillofacial surgery.  All teeth were instrumented with LightSpeedLSX and split into 3 groups: No irrigation, Conventional irrigation with NaOCL, and Irrigation with EndoVac (NaOCL).

Six micron serial histologic sections are made and stained with hematoxylin and eosin. Sections of each glass slide are compared using light microscope at 100X magnification. The amount of debris left in canals are quantified as percentage of canal lumen area. The data was statistically analyzed to compare percentage of debris and efficacy of irrigation techniques.

RESULTS: Mean % “Clean” – 100% = Completely Free of Debris

	LightSpeedLSX with No Irrigation	LightSpeedLSX with Conventional Irrigation	LightSpeedLSX with EndoVac Irrigation
1 mm from Working Length	70%	94%	99%
3 mm from Working Length	72%	96%	99.5%

The combination of LSX and EndoVac was able to render these canals 99%+ free of debris.  Average instrumentation time with LSX was 6.1 minutes.  EndoVac circulated 24ml through the canal system compared to only 3.4ml with conventional irrigation.

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