How and with what to cut COMCORD?
COMCORD should always be cut with the cover and orange protective foil.
To cut COMCORD you need to use special scissors (https://arkonadent.com/nozyczki/ ) or a good scalpel/disposable blade, placing the product on a hard surface or glass backing. Cutting with blunt instruments may result in destruction of the COMCORD microstructure.
How to store COMCORD?
COMCORD should be stored in its original packaging at a temperature below 25°C.
COMCORD retains its properties for up to 3 months after opening, provided it is stored at a reduced temperature (3°C to 5°C).
What color is COMCORD?
The composite constituting the matrix of polyethylene fibers has a shade of A2.
How thick is COMCORD?
The thickness of COMCORD is approx. 0.7 mm (±0.2)
How is COMCORD different from CHORDS?
COMCORD consists of parallel polyethylene fibers placed in a microhybrid composite matrix with increased mechanical strength.
CHORDS takes the form of a ribbon (weave) of polyaramid fibers and requires the use of a composite.
What kind of fiber is this?
COMCORD is a system of 1056 UHMWPE filaments (thin polyethylene fibers with a diameter of approximately 10-20 micrometers each).
How quickly does the composite set in COMCORD?
COMCORD is best polymerized in sections no longer than the diameter of the polymerization lamp fiber optic cable (i.e. 5-8 mm), covering the fiber sections not currently exposed with orange foil (i.e. not removing it prematurely) – proceed as for Chords.
COMCORD has a shade close to A2 and cures without any problems under the light of a dental lamp with a standard wavelength range of 400-500 nm (visible light, blue).
Each COMCORD fragment should be exposed for about 20-30 seconds. If there are any doubts as to whether the light reaches all the reconstruction fragments (e.g. in complicated courses), the exposure time can be extended to 40 seconds, or at the very end, the entire reconstruction can be exposed once more.
Is etching and bonding required prior to COMCORD placement?
Yes. In this respect, COMCORD restorations can be treated approximately like work with composite material alone, i.e. each time the surface of the tooth(s) must be prepared in the standard way by etching it and applying a bonding system.
Does COMCORD require any additional procedures before use?
No. COMCORD is a ready-to-use product. The only procedure that may be required is cutting to the required length (if necessary at all, see point 6). Nothing else needs to be done with it. Simply remove it from the casings, adjust/form it and polymerize it.
Is it necessary to make a groove on the teeth?
The method of using COMCORD can be any, with or without grooves. It should be remembered that bonding systems bond better to enamel than to dentine, therefore the enamel should not be damaged too much. In the case of a high degree of tooth loosening (degree III), grooves may be necessary.