From a CAD/CAM-milled, allogeneic bone block to an implant-supported fixed partial denture with angulated screw channel: a case report.

Tuna, Taskin; Yilmaz, Burak; Hermanns-Sachweh, Benita; Raith, Stefan; Wolfart, Stefan (2021). From a CAD/CAM-milled, allogeneic bone block to an implant-supported fixed partial denture with angulated screw channel: a case report. Quintessence international, 52(1), pp. 56-63. Quintessenz Verlags-GmbH 10.3290/j.qi.a45431

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Augmentation of alveolar ridge defects is a technique-sensitive procedure in dental implantology. Depending on the size of the defect, it may be necessary to use autogenous bone blocks. However, patients may be against these blocks as these procedures are surgically invasive.

CASE REPORT

This report describes the restoration of a partially edentulous mandible, which suffered a major bone defect from the right canine to the third molar site after multiple implant losses. The use of a CAD/CAM allogeneic cancellous bone block from a living donor bone was planned for the reconstruction of the alveolar ridge at the defected site. A CBCT scan was taken and the virtual planning of the bone augmentation and placement of four implants was performed. The milled bone block was fixed for augmentation and the implants were placed using a CBCT-generated surgical guide. After osseointegration, a CAD/CAM-fabricated screw-retained metal-ceramic implant fixed partial denture with angulated screw channels was delivered.

RESULTS

The use of CAD/CAM-milled, allogeneic bone block resulted in a time-efficient and simplified reconstruction of the defect because no donor site was used, and the fit of the block on the native bone was uneventful and fast. At the 1-year follow-up, an average peri-implant vertical soft tissue decrease of 1 mm on buccal and 0.3 mm on lingual sites was observed and the peri-implant tissues were healthy.

CONCLUSIONS

The long-term success of this CAD/CAM cancellous bone block needs to be evaluated in well-designed clinical studies.

Item Type:

Journal Article (Further Contribution)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology
04 Faculty of Medicine > School of Dental Medicine > Department of Preventive, Restorative and Pediatric Dentistry

UniBE Contributor:

Yilmaz, Burak

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0033-6572

Publisher:

Quintessenz Verlags-GmbH

Language:

English

Submitter:

Daniela Zesiger

Date Deposited:

14 Jan 2021 15:48

Last Modified:

14 Jan 2021 15:48

Publisher DOI:

10.3290/j.qi.a45431

PubMed ID:

33118004

Uncontrolled Keywords:

allogeneic bone substitutes alveolar bone loss block graft dental implants guided implant surgery prosthodontics

BORIS DOI:

10.48350/149778

URI:

https://boris.unibe.ch/id/eprint/149778

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