As we know, this can be a complicated task, as it tends to make crown preparation and impression-taking far more challenging. It also tends to be equally challenging for the lab technicians, especially as the crown has to be exactly the right contour to receive and retain the clasp arm. While it isn’t the most pleasant procedure, we do what needs to be done to make sure our patients receive the dental care they need.
To have the crown contoured correctly inside and out, you need to make sure to create enough clearance around the crown preparation under the clasp of the partial denture—including the occlusal, buccal, lingual, and proximal dimensions. This will ensure that a well-prepared tooth is provided for the lab technician.