This article was suggested in response to my post about hating to talk to my clients about poor impressions. Good tips, but the last one refers to a double or two step impression technique. The client I am having difficulties with impressions is most likely using this technique but has never complained of contacts, or of anything not fitting properly, actually. I've never had a remake from him/her. The problem is my problem (and maybe the patient's down the road) where I have trouble reading the margins. I have never seen the Dr. take an impression, though I have asked, but there are tell tale signs in the impressions that suggest he/she is using a two step technique. There is a problem with co-adaptation, or of bonding between material layers. There are flakes of margin material, sandwiched between stone after model pouring. The client swears that she/he is retracting/isolating, but the margins are both clear and muddy around the same prep. When I ask for new impressions, most times the first impression was better than the new one. Perhaps the last observation is symptomatic of a lack of retraction on the second impression appointment, but it's anyone's guess. I don't see how there is any way to get an accurate impression with a two step technique and I would love to hear from someone who has had success in changing a client's impression taking technique for the better. this is what I'm after. Thanks.