Incidence of dentinal defects after root canal filling procedures

By Shemesh H, Wesselink PR, Wu MK.

Date: 01/2010
Journal: IEJ


Compare the incidence of dentinal defects (cracks and craze lines) after root canal preparation, lateral compaction and continuous wave compaction of gutta-percha and AH26 sealer.


  • N= 200 Mandibular Premolars
  • Subjects divided into four groups with similar average canal diameters (n = 50). One group was left untreated and served as the control. The other three groups were prepared with ProTaper rotary instruments up to size F4. After preparation, one group was left unfilled while two groups were filled with gutta-percha and AH26 using either lateral compaction or the continuous wave technique. Roots were then sectioned at 3, 6 and 9 mm from the apex and inspected under a microscope.


1.The unprepared control group had no dentinal defects.

2.The other groups exhibited significantly more defects than the unprepared group (P < 0.05).

3.There was no difference in the incidence of defects between the two filling techniques.

Clinical Significance:

In extracted teeth, dentinal defects were observed in roots filled with gutta-percha and AH26 using the lateral compaction and continuous wave techniques. But no difference was reported between the two techniques.