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Digital protocol for creating a virtual gingiva adjacent to teeth with subgingival dental preparations
Rubén Agustín-Panadero1, Ignazio Loi2, Lucía Fernández-Estevan1
1Department of Oral Medicine, Faculty of Medicine and Dentistry, University of Valencia, Spain.
Journal of Prosthodontic Research
|December 3, 2019
Summary
This study presents a digital method for capturing gingival emergence profiles in teeth prepared with the biologically oriented preparation technique (BOPT). This technique ensures accurate prosthetic restorations and excellent periodontal tissue compatibility.
Area of Science:
- Digital dentistry
- Prosthodontics
- Periodontology
Background:
- Restorative dentistry requires precise gingival emergence profile data.
- Biologically oriented preparation technique (BOPT) offers a predictable approach to tooth preparation.
- Accurate digital capture of subgingival tissues is challenging.
Purpose of the Study:
- To describe a digital technique for recording gingival emergence profiles.
- To model these profiles for prosthetic restorations on BOPT-prepared teeth.
- To facilitate precise fabrication of definitive ceramic crowns.
Main Methods:
- Intraoral scanning of two anterior teeth prepared with vertical and subgingival BOPT.
- Digital file manipulation using alignment (best-fit) software.
- Creation of a virtual gingival emergence profile mirroring the interim prosthesis.
Main Results:
- A digital reproduction of subgingival soft tissues was obtained.
- The digital model was unaffected by gingival sulcus collapse upon provisional crown removal.
- An exact copy of the interim restoration was achieved.
Conclusions:
- The described technique provides dentists and lab technicians with accurate digital data of subgingival tissues.
- This facilitates the fabrication of definitive prostheses with precise anatomy.
- Ensures optimal compatibility with periodontal tissues for long-term success.
