2. • Each root canal has to be addressed individually.
• Root canal preparation should be planned thoroughly
before starting treatment.
• Careful evaluation of radiographs is mandatory.
Factors affecting planning and performing root canal preparation :
Anatomy of the root canal
Microbiology of the root canal
Instruments available for preparation.
Sudanese dental center
Khartoum October 2021
Basic principles for canal preparation
3. Selection of NiTi Rotary Files
Correct Choice for Rotary Files depend on,
Understand the fundamentals of file design
pre-clinical trial.
1. Assess the difficulties of the case
Sudanese dental center
Khartoum October 2021
2. Prepare with hand files or path files up to size #20
prior to rotary use--- glide path
Golden RULES
4. 3.Provide adequate access…. Straight line access
Sudanese dental center
Khartoum October 2021
Golden Rules
4.Use light touch and low rpm --don’t force the file
5. Proceed with crown-down sequence preparation
6. Replace rotary instruments frequent to avoid overuse
7. Avoid Cutting With the Entire Length of File—the more
file engaged in the root canal, the higher potential
for instrument fracture
5. Selection of NiTi Rotary Files
Correct Choice for Rotary Files depend on,
Understand the fundamentals of file design
pre-clinical trial.
1. Assess the difficulties of the case
2. Provide adequate access…. Straight line access
3. Prepare with hand files or path files up to size #20
prior to rotary use--- glide path
Before you choose a rotary file, you must try it
Sudanese dental center
Khartoum October 2021
Golden Rules
6. 8. Don’t Start and Stop—sudden changes in the direction
of a rotary caused by the operator must be
avoided. A smooth gentle reaming motion is
most efficient; rotaries should be inserted
and withdrawn from a canal while rotating.
9. Length Control is Critical—working length should be
well established
10. Don’t rotate a file inside a dry canal
Sudanese dental center
Khartoum October 2021
Golden Rules
9. Sudanese dental center
Khartoum October 2021
Ramo
RCS Silver Magic Path Files
Four files system tips
size 13mm..16mm…19mm
Two different tapers …
o.02 % or o.o3%
More flexible than K-files
Suitable for curved canals
Rotary Path File for Glide Path Preparation
Length
21mm…25mm….31mm
10. Sudanese dental center
Khartoum October 2021
Ramo
RCS Silver Magic Path Files
Feature
Handle
11mm, easy enter into the molar teeth
Color
ISO standard ..indicate the tip diameter size
Stoper
ISO standard, measure the working
length. and the black line on the stopper
can indicate the working direction of the files.
11. Sudanese dental center
Khartoum October 2021
Ramo
RCS Silver Magic Path Files
Feature
Laser mark
18mm, 19mm,20mm, 22mm
Tip design
Cross section design
Square cross. section
Non- cutting tip
Recommended rotary speed 300-350 rpm,
torque 2.0 N.cm
16. Rainbow one Shaping File
Sudanese dental center
Khartoum October 2021
RCS Rainbow is One File rotation system that enables shaping of
the full length of the canal and is made from a heat-treated
Nickel-Titanium alloy.
RCS Rainbow is highly efficient , high flexibility with excellent
cutting efficiency and resistance of cyclic fatigue.
RCS Rainbow is suitable for all kinds of canals, including curved canal
Upgraded slim S-shaped cross section
l Release more rooms for debris capacity, avoid the screw in due to can easily remove the
debris from the root canal
l Increase the cutting efficiency
l Greater torsional resistance and flexural strength