Table 1.

Criteria for evaluation of root canal fillings.

Parameters	Criteria	Description
Length	Acceptable	Root filling ends 0–3 mm from the root apex
	Overextended	Root filling is extruded in the periapex
	Short filling	Root filling ends > 3 mm from the root apex
Density	Adequate	Root filling is homogenous with no visible voids within or between the filling and the root walls
	Inadequate	Root filling is not homogenous with visible voids within or between the filling and the root walls