تقييم عمق نفوذ خمسة رؤوس إرواء لبية في أقنية صنعية مستقيمة محضرة بنظام Protaper : دراسة مخبرية

الملخص EN

Background and Objective: Evaluation of depth of insertion for several irrigation Needles with different sizes and designs when inserted in simulated straight canals instrumented with Protaper rotary files.

Methods & Materials: 21 simulated Straight canal Endo Training Blocks, ISO# 15: 0.2 taper: L=17 mm, were instrumented using Protaper files (Group 1: F1), (Group 2: F2), (Group 3: F3).

Then enlarged to #35 manually (Group 4: F3 + #35).The depth of insertion was evaluated for 5 different irrigation needles: Hypodermal needles:27gauge and 24gauge, EndoEze 27gauge, Navitip31gauge EndoVac28 gauge.

Data were analyzed using One way Anova test.

Results: Irrigation tips (NaviTip, EndoEze, EndoVac) reached 1mm far from the WL.

Enlargement of the apical area to F1, F2 and F3 improved the depth of insertion for (Navitip, EndoEze, EndoVac, 24gauge) (P<0.05) However, it didn’t improve the depth for hypodermal needle (27gauge).

No differences were found between Group 3 and Group 4 for all needles used in this study (P<0.05).

Conclusions: No differences were found in depth of insertion for NaviTip, EndoEze, EndoVac tips in straight canals.

There is no need to enlarge to size 35 in order to use EndoVac tip in straight canals.

It is not advisable to use (27gauge) tip in cleaning the root canal, because it is not long enough to reach the apical hypodermal area.