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Full digital workflow for crown lengthening by using a single surgical guide.

Leandro Passos1, Fernando Peixoto Soares2, Isabela Goulart Gil Choi3

  • 1Associate Professor, Department of Prosthetic Dentistry, Health Institute of Nova Friburgo, School of Dentistry, Federal Fluminense University (UFF), Rio de Janeiro, Brazil; Visiting Professor, Department of Dentistry, Edmonton Clinic Health Academy, Faculty of Medicine and Dentistry, School of Dentistry, University of Alberta, Edmonton, Canada.

The Journal of Prosthetic Dentistry
|December 3, 2019
PubMed
Summary

This study introduces a digital workflow for crown lengthening using free software to create a surgical guide. This method aids in precise planning for bone repositioning and gingival margin placement during the procedure.

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Area of Science:

  • Dentistry
  • Digital Dentistry
  • Surgical Planning

Background:

  • Crown lengthening is a common dental procedure.
  • Accurate surgical planning is crucial for successful outcomes.
  • Traditional methods can be time-consuming and less precise.

Purpose of the Study:

  • To present a novel digital workflow for designing a surgical guide for crown lengthening.
  • To utilize free software for digital design and planning.
  • To improve the precision of surgical crown lengthening procedures.

Main Methods:

  • Acquiring Standard Tessellation Language (STL) files from intraoral scans, digital tooth design, and cone-beam computed tomography (CBCT) scans.
  • Converting Digital Imaging and Communications in Medicine (DICOM) files to STL format.
  • Superimposing files for surgical planning and designing a surgical guide with a biological width band.

Main Results:

  • A digital workflow was established for crown lengthening using free software.
  • A surgical guide was designed, incorporating biological width measurements and predicting gingival margin position.
  • The technique allows for precise determination of incision and bone repositioning levels (alveolotomy).

Conclusions:

  • The presented digital workflow enables predictable crown lengthening surgery.
  • Accurate diagnosis of restorative outcomes and determination of osteoplasty needs are facilitated.
  • This technique offers a precise and digitally driven approach to surgical crown lengthening.