Comparison of Prosthetic Complications and Framework Misfit Among Different Cobalt-Chromium Framework Fabrication Techniques

Comparison of Prosthetic Complications and Framework Misfit Among Different Cobalt-Chromium Framework Fabrication Techniques in Maxillary and Mandibular Full-Arch Implant-Supported Acrylic Screw-Retained Restorations: A Randomized Clinical Study

This randomized clinical study aimed to compare prosthetic complications and framework misfit associated with three different fabrication techniques of cobalt-chromium frameworks-conventional casting, CAD/CAM milling, and selective laser melting (SLM)-used in maxillary and mandibular full-arch implant-supported acrylic screw-retained restorations.

Inclusion Criteria:

• • Six osseointegrated maxillary and six mandibular implants

  • No clinical or radiographic signs of implant failure
  • Good systemic health
  • Normal maxillomandibular relationship and acceptable oral hygiene

Exclusion Criteria:

• • Implant failure

  • Unfavorable occlusal relationships
  • Poor compliance or inability to attend follow-up