Fig. 1

Pre-operative IOPA of maxillary left second molar showing caries 

approaching to pulp ,also showing a positive cold test response 

confirms an irreversible pulpitis suggesting a root canal treatment 

for the same.

On IOPA root canal external anatomy seems conical .

Fig. 2

This image is showing a C shaped root canal anatomy with a

MB orifice and a large oval orifice made by fused distobuccal

& palatal orifices 

Shaping was done by hyflex CM files .

Irrigation with 5.25% NaOCl ,normal saline & 17% EDTA along

 with intracanal heating of NaOCl by fastpack & activation of 

irrigants by UltraX.

Fig. 3

IOPA showing down-pack procedure done by fastback followed by downtick by fastfill.

Fig. 4

In this image u can see a beautiful c shaped root canal anatomy 

post obturation . Chamber was cleaned by 95% ethanol before 

core build with composite was done .

Fig. 5

IOPA post obturation showing core build up with direct composites .


As per this case now we all know that C-shaped canal anatomy is not that common like a mandibular second molar but with a good angulated IOPA readings & by proper isolation with rubber dam, irrigation protocols followed by effective activation of irrigants & last but not the least magnification with an operating microscope can ease to treat such cases very smoothly . After all what we can see we can treat as well.


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  4. Jerome CE. C shaped root canal system : Diagnosis,treatment & restoration . Gen Dent. 1994;42:424-7.