Compatibility of accessory gutta-percha cones used with two types of spreaders

Compatibilidad dimensional entre los conos accesorios de gutapercha y los espaciadores

“…La correspondencia entre conos y espaciadores puede medirse mediante la comparación de sus longitudes, conicidades y ángulos 2*,15*,16 , realización de moldes de los espaciadores 14 y por la cantidad de gutapercha compactada en el interior del conducto 8 . En nuestro estudio hemos utilizado como medio para establecer las relaciones entre los grupos de gutaperchas y espaciadores la comparación de longitudes o diámetros, al igual que las investigaciones realizadas por Zmener y cols 2* y Hartwell y cols 4 .…”

Dimensional variability of nonstandardized greater taper finger spreaders with matching gutta‐percha points

“…1991) however, the dimension and form of gutta‐percha point tips is highly unpredictable, not uniform, and difficult to measure. It has been shown that diameter measurements 1 mm (D 1 ) behind the instrument tip are more practical and equally valid (Jerome et al . 1988).…”

“…However, the materials and instruments used to create such fillings must be uniform and compatible with one another if such results are to be reproducible. Jerome et al . (1988), using various combinations of nonstandardized gutta‐percha points and finger spreaders to create root canal fillings, demonstrated that the quality of the seal achieved was related directly to the relationship between finger spreader and gutta‐percha point.…”

A comparison of spreader penetration depth and load required during lateral condensation in teeth prepared using various root canal preparation techniques

“…After 30 s, the jig of the Instron machine was released and the spreader removed from the root canal with a back and forth motion. To control rebound of gutta‐percha, no more than 5 s was allowed to elapse after removal of the spreader before placing an accessory cone (Jerome et al. 1988).…”