By Dr. Mark Pettit, DDS Call me paranoid, but I don’t think I’m alone in having wondered what the dental lab I use thinks of my dentistry. Sure, dental labs deal with things like poor retentive preps, illegible finish lines (margins), pulls in the impression, different viscosity impression materials that aren’t properly blended, insufficient reduction, and inaccurate bites on a daily basis. The real question is, does the lab dread, or love seeing your impressions come through their door?