Three-dimensional-guided removal and preparation of dental root posts: concept and feasibility
Patients - This case report presents a novel method to remove glass fiber-reinforced composite root posts in a minimally invasive way while simultaneously shaping the canal for a new post-endodontic restoration. A multi-morbid, handicapped 62-year-old patient was referred with a horizontally fractur...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2020
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| In: |
Journal of prosthodontic research
Year: 2019, Volume: 64, Issue: 1, Pages: 104-108 |
| ISSN: | 1883-1958 |
| DOI: | 10.1016/j.jpor.2019.04.005 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jpor.2019.04.005 Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S1883195818304031 
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| Author Notes: | Franz Sebastian Schwindling, Akinori Tasaka, Tim Hilgenfeld, Peter Rammelsberg, Andreas Zenthöfer |
| Summary: | Patients - This case report presents a novel method to remove glass fiber-reinforced composite root posts in a minimally invasive way while simultaneously shaping the canal for a new post-endodontic restoration. A multi-morbid, handicapped 62-year-old patient was referred with a horizontally fractured maxillary incisor presenting approximately 1 mm residual coronal tooth height. Endodontic revision was necessary, which required removal of a glass fiber-reinforced composite post. A cone-beam computed tomography (CBCT) scan was imported into conventional implant-planning software and matched to a stone cast of the intraoral situation. Position, length, and axis of the future post were planned virtually. Based on this planning, a tooth-supported splint was three-dimensionally (3D) printed. This splint allowed use of a 2.2-mm spiral drill for removal of the fractured post and shaping of the root canal for a new cast post-and-core. This metal post-and-core was adhesively cemented and prepared for a zirconia single crown veneered in the labial aspect. - Discussion - This method currently requires use of CBCT-based, ionizing 3D imaging. Additional refinements to this approach can be made regarding spiral drill design and coating as well as regarding the post-and-core workflow. - Conclusions - 3D-guided post-endodontic management is feasible. More research is needed to balance higher radiation doses against therapeutic success. |
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| Item Description: | Available online 16 May 2019 Gesehen am 27.03.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1883-1958 |
| DOI: | 10.1016/j.jpor.2019.04.005 |