1. To use the Cohere
Material, it must be liquefied at boiling for 6-10 minutes, then cooled to a
storage temperature of 145-155° F (65°C) for a minimum of 10 minutes.
Gingi-Pak recommends use of the new heater, the
Dry
Conditioner, which is programmed to heat, then store the material at the proper
temperature for up to 5 days. A hydrocolloid water conditioner may also
be utilized. Please note that Cohere material should not be boiled more
than twice and it must always be cooled to a working temperature before use on
the patient. Make certain that a sufficient amount of Cohere material is
heated to accommodate the preparation. A 2.5cc syringe will accommodate a quadrant and a 5.0cc Syringe is enough for a full
arch, when used with alginate as the tray material.
2. To prepare the
syringe, remove the protective cap and check flow by ejecting a small amount
with the syringe in an upright position.
3. Immediately push the needle onto the COHERE syringe with a
twisting motion which will secure the luer lock. Note that the size 15
gauge has a larger diameter and will provide the greatest flow.
4. At the same time,
have an auxiliary prepare the alginate tray with 10% to 15% extra water for slightly softer
mix
so there is less displacement of the COHERE syringe material.
5. Syringe COHERE material liberally around and into the sulcus
and them completely cover the desired areas.
6. To avoid air
bubbles in post impressions, insert needle to the upper most depth of the syringe
while continuing to extrude COHERE, covering the entire tooth.
7. Immediately place
tray in mouth. Seat with moderate pressure then hold tray in
position. Do not allow patient to hold or bite down on tray.
8. When setting is
complete (after two to three minutes), remove the tray with a SNAP. Do
not use an air nozzle nor ease the impression out slowly.
