Do you cringe at the thought of goopy dental impressions? Conventional dental impressions use a putty-like material in plastic mouth trays, and patients must make sure their teeth remain in precisely the same relation to one another until the impression is set. Even the tiniest movement can render the impression unusable, and the entire procedure must be repeated. We know many people hate this process, finding it uncomfortable at best. For others, it is even worse and especially for those with a strong gag reflex and who can feel as if they are choking on the impression tray and its contents.