A new glass ionomer root canal sealer (Ketac-Endo) has been developed,
The purpose of this study was to compare the apical leakage of Ketac-
Endo and AH26 using two different filling techniques and a controlled
vacuum procedure, Sixty-four extracted human maxillary anterior teeth
were instrumented and divided into four groups of 15 roots each, The g
roups were obturated as follows: group 1, a single cone technique and
Ketac-Endo; group 2, a lateral condensation technique and Ketac-Endo;
group 3, a single cone technique and AH26; and group 4, a lateral cond
ensation technique and AH26. After storage in 100% humidity at 37 degr
ees C for 1 wk, the root surfaces were coated with two layers of nail
polish and sticky wax, All specimens were immersed in a vacuum flask c
ontaining 2% methylene blue dye solution, The air was evacuated with a
vacuum pump. The roots were sectioned longitudinally, and the linear
extent of dye penetration was measured, Statistical analysis revealed
that there were no significant differences between any of the groups.