Root canal shaping
•


lenka.roubalikova@tiscali.cz
2
Shaping techniques
•Rotation  – 45°
•
K – reamer
K- file

lenka.roubalikova@tiscali.cz
3
Shaping techniques
•Rotace 45° pressure and pull motion
•
K – reamer
K- file
Risk of ledging
Zip, elbow effect
Via falsa

lenka.roubalikova@tiscali.cz
4
Shaping techniques
•Filing
 H- file
K – file
Risk of  periapical infection infection
Risk of plug

lenka.roubalikova@tiscali.cz
5
Shaping techniques
• Balanced force
 K- flexofile
 K – file (?)
90-180°
180 – 270°

lenka.roubalikova@tiscali.cz
6
 Reaming

lenka.roubalikova@tiscali.cz
7
 Filing

lenka.roubalikova@tiscali.cz
8
 Balance forced technique

lenka.roubalikova@tiscali.cz
9
 Methods of shaping
• Rotation and filing combined
•
•K - reamer
•H- file
•

lenka.roubalikova@tiscali.cz
10
Methods of shaping
•Circumferential filing
•
Rotation
Circumferential filing

lenka.roubalikova@tiscali.cz
11
nastroje1
Dr. Sedlmayer

Methods of shaping
•Combination of rotation and filing
•
•Start with rotation
•Finishing with filing
•Suitable for straihgt root canals

Methods of shaping
•Step back method
•
•Increasing size with decreasing length.
•Insertion of root canal instrument – WL
•Next – 1 mm shorter
•…

•
weinekonus
Taper
Final flaring with
the smallest instrument
H- File nebo K - Flexofile.

Method modified double flaerd
•I. Opening of root canal
•- Coronal third
•II. Apical preparation
•Cathetrization,measurement, shaping till ISO 30 – 35  balanced force. Master file – MAF (till WL)
•III.Step back
•Final flaring (MAF)