Kedo-S / Kedo-S Plus

Alloy

NiTi (varies by generation)

Heat Treatment

Varies: Conventional → M-Wire → CM-Wire Blue → Dual Metallurgy

Length

16mm, 17mm

Taper

Variable (4-8%)

File List

D1 (Red)

#25 / VV 4-8%

Narrow canals (MB/ML/DB)

E1 (Blue)

#30 / VV 4-8%

Wide canals (distal/palatal)

U1 (Black)

#40 / VV 4-8%

Anterior teeth

P1+

#28 / VV 4-8%

Plus: Posterior (molar canals)

A1+

#38 / VV 4-8%

Plus: Anterior teeth

Protocol

1. Canal Assessment

Evaluate canal anatomy with radiograph. Establish patency with #10 K-file.

2. Glide Path

Create glide path with #15 K-file to working length.

3. Kedo-S: Canal-Specific File Selection

D1 (#25, Red) for narrow canals (MB/ML/DB). E1 (#30, Blue) for wide canals (distal/palatal). U1 (#40, Black) for anterior teeth. 250-300 RPM, 2.2 Ncm, brushing motion.

4. Kedo-S Plus: Single-File Protocol

P1+ for posterior (molar canals). A1+ for anterior teeth. 250-300 RPM, 2.2 Ncm.

5. Irrigation

NaOCl between files. 17% EDTA gel as lubricant during instrumentation.

6. Obturation

Metapex or ZOE-based material.

Clinical Tips

•Use 250-300 RPM, 2.2-2.4 Ncm torque
•Apply light apical pressure with brushing motion
•Color coding: D1=Red (narrow), E1=Blue (wide), U1=Black (anterior)
•Advance in short movements (2-3mm)
•Do not force beyond the apex

Warnings

⚠Do not advance beyond the apex due to physiologic root resorption
⚠Do not apply excessive torque
⚠Dentin walls are thin - advance carefully

Clinical Notes

→World's first pediatric rotary file system (2016)
→Developed by Dr. Ganesh Jeevanandan
→6 generations: Kedo-S → SG → SG Blue → Square → Plus → Nano Plus
→Variable taper design adapts to canal anatomy
→Kedo-S Plus: Dual metallurgy (Gold + Blue) combination
→Triangular cross-section

References

Jeevanandan G. J Clin Diagn Res. 2017 (PMC5427458)
Jeevanandan G, Ganesh S. Indian J Dent Res. 2019
Govindaraju L et al. Int J Clin Pediatr Dent. 2018
Lakshmanan L et al. Eur J Dent. 2022
Kumar & Jeevanandan. 2023