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Message: [QUOTE="Queen floss, post: 117251, member: 6782"] Hello All, I would really like to know the basic steps on how the whole crown prep process works, I am getting a little confused and I know there is different ways to go about doing it. What I think I know: -Take an alginate impression of both arches with a metal tray (one to help fabricate a temporary crown and one for the opposing arch which the lab will use to pour up a model) - Anaesthetise, select tooth shade and then prepare the tooth with the high speed handpiece - apply retraction cord and remove before you take a final impression - take a final impression using heavy body and light body with a plastic tray (a full tray) - take a bite registration with jet bite or wax - using alike or integrity place material in the alginate impression that you took in the beginning, then place that impression in the mouth - remove and trim - Send to lab: opposing arch impression, final impression and bite registration I guess i want to know more or less which materials and trays to use to take the impressions. Questions - When do you use a quadrant tray (not triple tray)? - can you use putty instead of alginate to fabricate the temporary crown? - Anything else to send to the lab? the tray you used to make the temp? [/QUOTE]