Comparison of the EndoVac system to Needle Irrigation of Root Canals

By Nielsen BA, Baumgartner JC

Date: 01/2007
Journal: JOE


Purpose:  to compare the efficacy of the EndoVac system and needle irrigation to debride the apical 3 mm of a root canal.

N= 21 matched pairs of root canals.

Inclusion criteria:  intact, extracted human incisors, canines, and premolars ((with 1 canal or 2 distinct roots)


  • The teeth were accessed and prepared using profile series 29 .04 taper rotary instruments in crown down technique.
  • One tooth of each matched pair was irrigated by using the EndoVac system to working length. The other tooth of the matched pair was irrigated with a 30-gauge ProRinse irrigating needle.
  • All teeth were irrigated with 5.25% NaOCl and 15% EDTA for the same amount of time, and total volume of irrigant used was recorded.
  • Teeth were then fixed, decalcified, and sectioned at 1 mm and 3 mm from working length.
  • Serial sections were made and digitally photographed. The amount of remaining debris was determined

Most highlighted Results: 

  • At the 1-mm level, significantly less debris was found in the EndoVac group (p 0.0347).
  • At the 3-mm level, there was no significant difference between groups.
  • Significantly more volume of irrigant was delivered with the EndoVac (p 0001).

Clinical significance:

Significantly better debridement can be achieved at 1 mm from working length by using the EndoVac compared with needle irrigation..