One unique and simple sequence:
Same instruments for root canal shaping and canal retreatment
Same sequence for simple curved and narrow canals of mono-radicular teeth and
molars
Triangular cross-section:
Better cutting efficiency
Strong resistance to breakage.
Properties:
Non cutting tip for increased safety and reduced risk of canal deviations
Any distortion of instruments plainly visible: metal-fatigue monitoring
Short handle for easy access to posterior areas
CMA Instruments are recommended for use with endo motors featuring an
auto-reverse function
CMA:
a revolutionary system
for your everyday practice
Advantages:
1-A reduced number of instruments.
4 nickel-titanium rotary endodontic instruments for a simplified sequence.
Only one sequence for root canal shaping and removal of filling material.
2-Safer, more secure and reliable rotary instruments.
Cross-section with 3 cutting angles ensures more cutting efficiency.
Cross-section
Non-cutting tip: ensures the respect of the root canal trajectory.
Their shape favours the removal of debris out of the canal.
Short handle: improves and eases the access to molars.
-Guaranteed Safety
Stronger hard wearing NiTi alloy. Deformation visible to the naked eye.
Step 1
Exploring the coronal 2/3 of the canal and making it permeable:
Instruments used:
Manual steel files N° 10 and 15. Used until they move freely in the canal.
Objectives:
• Secure and prepare the access for CMA into the coronal 2/3 of the canal.
Step 2
Flaring the coronal and middle part of the canal:
Instruments used:
CORONAL and MEDIAN. CORONAL C
flares out the coronal part of the canal.
MEDIAN M
enlarges the middle part of the canal.
Objectives:
• Straighten the access and enlarge the root canal entries to provide
continuity between the pulp chamber and the canals, so as to allow the tools a
free access to the apical one-third.
Step 3
Determining the working length:
Instruments used:
Manual steel files N° 10 and 15. Used until they move freely in the canal.
Objectives:
• Determining the working length. • Preparing for the nickel-titanium rotary
instruments to pass safely all the way to the apical one-third.
Step 4
Enlarging the apical portion of the canal:
Instruments used:
APICAL FINE A1 is used on the whole length of the root canal, to be followed
by APICAL A2.
Objectives:
• Preparing the apical portion. • Making a space where the irrigation
solutions can collect. • Providing the apical taper which will give the best
obturation. • Keeping apical diameter small.
Recommendations
• Nickel-titanium rotary instruments must be used in a portion of the canal
which has been explored and prepared previously with a manual file number 15.
• Examine the instruments before and after each use. Discard the tool if
there is the slightest deformation. • Speed: 300 to 400 rpm. • Torque: 2 to 3 N
for all instruments. • Movement: progression towards the apex by continuous
short (1mm to 3 mm) and rapid up-and-down
strokes, finishing off with a « brushing » movement on the root canal walls.
• Time: 5 or 10 seconds per rotary instrument. • The nickel-titanium rotary
instruments must never be forced. • Properly clean the instrument after each
removal. • The canal must be copiously irrigated with sodium hypochlorite each
time the instrument
has been introduced. • Use of chelating gel is advised in order to facilitate work with the tools. • If progression with A1 is hindered, go again with K 15 file and M. If is hindered with A2, go again with K 15 file and A1.
Tags: CMA