Fig. 1

Preoperative radiograph

Tooth no. 47 was diagnosed as Necrotic tooth with choronic periodical access.
From Preoperative radiograph it was evident presence of narrowness in the coronal portion of medial canals that require special attention and care,

Fig. 2

Master cone fit and working length radiograph
A conservative preparation is noticeable with minting root canal curvature.

Fig. 3

Post operative radiograph with showing obturation using single cones with BC sealer in medial canals and passive hydraulic multiple cones obturation with BC sealer

Fig. 4

Radiographic workflow

Fig. 5

Size and sequence of Harmony file system

Fig. 6

At coronal 1/3 of Fanta Harmony in comparison to other files with points will enlarge the space of design, modified two cutting triangular cross-sectioned debris transportation

Fig. 7

Apical 2/3 of Fanta Harmony possesses one active cutting point and one passive cutting point, that the file will provide moderate cutting ability

Fig. 8

Recommended speed and torque setting on iRoot pro

Speed: 350 RPM

Torque: 2.4 NCM

Management of the case

Conclusions

Harmony and iRoot Pro offer a smart, efficient approach to managing narrow and calcified canals.
With hybridization in a single file and an adaptable endomotor, they simplify treatment while preserving dentin.

Bibliography

Krasner P, Rankow HJ. Anatomy of the pulp chamber floor. JOE 2004; 30(1):5. 

The endodontic Glidepath: "Secret to rotary safety”. John D West Dent Today 2010 Sep;29(9):86, 88, 90-3.

Manual versus mechanical endodontic glide path. John D West Dent Today 2011 Jan;30(1):136, 138, 140

Influence of Negotiation, Glide Path, and Preflaring Procedures on Root Canal Shaping—Terminology, Basic Concepts, and a Systematic Review. February 2020 Journal of Endodontics DOI:10.1016/j.joen.2020.01.023