to investigate obturated root canals in maxillary and mandibular molars that had been treated clinically and compare them to previous in vitro and in vivo findings.
•N= total of 1,976 clinically treated molars.
- 1,262 mandibular and 714 maxillary molars were reviewed from clinical records.
- The final radiographs were evaluated and findings were recorded.
Most highlighted Results:
1.Mandibular 1st molars having 4 canals comprised 35.1%.
2.Mandibular 2nd molars with 4 canals consisted of 5.5%
3.Maxillary 1st molars having 4 canals comprised 18%.
4.Maxillary 2nd molars with 4 canals consisted of 9.6%
The 4th canal in mandibular molars was more easily located and treated than in the maxillary molars. A modified access form can help localizing these canals.