Influence of size and insertion depth of irrigation needle on debris extrusion and sealer penetration
Restorative Dentistry & Endodontics
;
: e2-2018.
Article
in English
| WPRIM
| ID: wpr-741977
ABSTRACT
OBJECTIVES:
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). MATERIALS ANDMETHODS:
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.RESULTS:
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).CONCLUSIONS:
Following preparation, inserting narrower needles compatible with the final apical diameter of the prepared root canal at 3 mm short of WL during final irrigation might prevent debris extrusion and improve sealer penetration in the apical third.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Rhodamines
/
Tooth
/
Bicuspid
/
Microscopy, Confocal
/
Tooth Apex
/
Dental Pulp Cavity
/
Gutta-Percha
/
Needles
Language:
English
Journal:
Restorative Dentistry & Endodontics
Year:
2018
Type:
Article
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