H&H Impression Technique: To Pack or Not To Pack?

I recently started using the H&H impression technique for crown impressions. I bought the materials from J. Morita. I use Blue Velvet (bite registration type material) to make the initial impression. Than I do the second impression – the wash – using the Flexi Velvet, low viscosity material.

So far the crowns have fit great. I wait until the Blue Velvet has just started to set and then I have the patient open and I inject a small amount of the Flexi Velvet in the cervical area of the Blue Velvet impression and have the patient close. I am still packing cord. Some people who use this system do not pack cord. Does it still work if you do not pack cord?

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Filed Under Fixed Prosthodontics, Restorative, Impression Materials 

Comments

One Response to “H&H Impression Technique: To Pack or Not To Pack?”

  1. NM on August 17th, 2007 8:34 am

    Why would you pack cord? The main advantage of the technique is not to pack! First of all, allow the Blue Velvet to COMPLETELY SET and then dry the impresson and inject the wash material. The set Bleu Velvet forces the injection into the sulcus and forces OUT any fluids (blood)to give an excellent impression…that’s why it’s called hydraulic & hydrophobic. It works great and saves time and the patient is MUCH more comfortable for not having cord packed

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