Influence of size and insertion depth of irrigation needle on debris extrusion and sealer penetration
Restorative Dentistry & Endodontics
; : e2-2018.
Artigo
em Inglês
| WPRIM (Pacífico Ocidental)
| ID: wpr-741977
Biblioteca responsável:
WPRO
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.
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Rodaminas
/
Dente
/
Dente Pré-Molar
/
Microscopia Confocal
/
Ápice Dentário
/
Cavidade Pulpar
/
Guta-Percha
/
Agulhas
Idioma:
Inglês
Revista:
Restorative Dentistry & Endodontics
Ano de publicação:
2018
Tipo de documento:
Artigo