The good news is that taking great impressions can be simple if a dentist chooses the correct impression tray, achieves adequate retraction with controlled bleeding, and uses a rigid impression material with a light body wash to clearly capture every detail of the preparation. Unfortunately, for many clinicians, taking a crown and bridge impression is one of the most stressful procedures in restorative dentistry. I sometimes wonder if the restorations fabricated from today’s materials are as accurate, or will last as long? We all know that a meticulous impression is paramount for a precision fit of the permanent indirect restoration. Even now, we are still seeing the results of the “copper band masters” decades after the restoratons were placed. One has to only look back and visualize copper band impressions taken with dental compound, and picture the definition, accuracy, margin detail, and meticulous dies that these impressions provided. This is especially true for crown and bridge impression materials and techniques. Sometimes, I feel that the “prehistoric” techniques that we learned in dental school years ago display more benefits than what is in vogue today. INTRODUCTION Today’s dentists are exposed to a multitude of dental materials, with each manufacturer claiming the benefits and superiorities of its respective products. Practicing accurate placement of the tray. Occlusal lock-bite registration left in place to act as bite jig.įigures 8a and 8b. Capturing the centric occlusion lock bite.įigure 7. Bite registration paste (O-Bite ) is placed on the contralateral opposing arch (nonprep side) to create a lock bite that will ensure that an accurate restorative bite is taken (see Figure 6).įigure 6. Patient practices biting into maximum habitual intercuspation (centric occlusion).įigure 5. Metal nonflexing impression trays are the first step to success.įigure 4. The rigid Honigum Putty (DMG America) keeps implant transfers firmly in place to ensure accuracy for the work to be done by our dental laboratory team.įigure 3. The MixStar-eMotion (DMG America).įigure 2.
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