Root Canal Anatomy of the human Permanent Teeth

By Vertucci F, Gainesville F.


•Purpose: to do a detailed investigation about root canal anatomy.

•N= 2400 permanent teeth.


•Immediately after extraction, teeth were fixed with 10% formalin.

•Pulp was dyed by injecting hematoxylin dye using 25 gauge needle.

•Teeth were cleared. •Samples were viewed using dissecting microscope.

Most highlighted Results: 

•Upper anteriors have 100% type I.

•Mandibular anteriors are 70-80% type I.

•MB2 is more common in MAX. 1st molar (37%) than MAX. 2nd molar (17%). While extra distal is comparable for MAN. 1st (43%), 2nd (38%). Regardless of canals configuration apically.

•24% of the cases MAN. 1st premolar is type V.  MAX. 2nd premolar 11% type IV.

•In all roots you would mostly find 1 foramen, except for MAX. 1st premolar (69%) and mesial root of MAN. 1st molar (.

•Lateral canals are more common in the apical 3rd in all teeth.

•Lateral canals at the furcation is 11% in MAX. 1st premolar and 23% in MAN. 1st molar.

Clinical significance:

•Knowing the diversity/complexity of root canal system would aid clinician predicting , diagnosing & providing higher quality treatment.