Influence of size and insertion depth of irrigation needle on debris extrusion and sealer penetration

Restorative Dentistry & Endodontics
Emel UzunogluBahar Özçelik

Abstract

To determine the effect of size and insertion depth of irrigation needle on the amount of apical extruded debris and the amount of penetration depth of sealer using a confocal laser scanning microscope (CLSM). Twenty maxillary premolars were assigned to 2 groups (n= 10), according to the size of needle tip, 28 G or 30 G. Buccal roots of samples were irrigated with respective needle type inserted 1 mm short of the working length (WL), while palatal roots were irrigated with respective needle type inserted 3 mm short of the WL. Prepared teeth were removed from the pre-weighed Eppendorf tubes. Canals were filled with F3 gutta-percha cone and rhodamine B dye-labeled AH 26 sealer. Teeth were transversally sectioned at 1 and 3 mm levels from the apex and observed under a CLSM. Eppendorf tubes were incubated to evaporate the irrigant and were weighed again. The difference between pre- and post-weights was calculated, and statistical evaluation was performed. Inserting needles closer to the apex and using needles with wider diameters were associated with significantly more debris extrusion (p< 0.05). The position of needles and level of sections had statistically significant effects on sealer penetration depth (p< 0.05 for both). Follo...Continue Reading

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Software Mentioned

CLSM Image Browser
SPSS

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