Zirconia ceramic fixed dental prosthesis with all-on-4 concept implants for irradiated maxilla: A case report

Eun-Joo Choi; Hye-Won Cho

doi:10.4047/jkap.2017.55.2.218

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Choi and Cho: Zirconia ceramic fixed dental prosthesis with all-on-4 concept implants for irradiated maxilla: A case report

Case Report

J Korean Acad Prosthodont 2017;55(2):218-224.

Published online: NaN April 2017

DOI: https://doi.org/10.4047/jkap.2017.55.2.218

Zirconia ceramic fixed dental prosthesis with all-on-4 concept implants for irradiated maxilla: A case report

Eun-Joo Choi¹, Hye-Won Cho^2,^∗

^¹Department of Oral and Maxillofacial Surgery, College of Dentistry, Wonkwang University, Iksan, Republic of Korea

^²Department of Prosthodontics, College of Dentistry, Wonkwang University, Iksan, Republic of Korea

∗Corresponding Author: Hye-Won Cho Department of Prosthodontics, College of Dentistry, Wonkwang University 460 Iksan-daero, Iksan, Jeonbuk 54538, Republic of Korea +82 (0)63 859 2938 : e-mail, hwcho@wku.ac.kr

Supported by Wonkwang University 2017.

Received 13 December 201618 January 2017 Accepted 3 February 2017

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The implant-supported fixed dental prosthesis in irradiated maxilla needs meticulous treatment planning due to low bone healing capacity. All-on-4 concept implantation can reduce the number of implants to be placed avoiding bone grafting procedure. Conventionally, prefabricated angled abutments for tilted implants have been used. However, in this case, it was replaced with computer-aided design and computer-aided manufacturing (CAD/CAM) abutment. This case report described all-on-4 concept implantation and fabrication of CAD/CAM zirconia fixed dental prostheses using CAD/CAM titanium abutments. (J Korean Acad Prosthodont 2017;55:218-24)

Keywords: Tilted implant, All-on-4 implant, Maxillary edentulous patient, Zirconia fixed prosthesis

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Fig. 1.

Preoperative diagnostic panoramic radiograph.

Fig. 2.

Computerized tomographic view of planned implant positions for all-on-4 concept.

Fig. 3.

Placement of implants. (A) Intraoral surgery images of implants placed in the maxilla. (B) Panoramic radiograph after all-on-4 implant placement surgery.

Fig. 4.

Impression and provisional prosthesis. (A) Splinted impression copings connected to implants, (B) Definitive implant-level cast, (C) Delivery of provisional restorations with temporary abutments.

Fig. 5.

Digital design of customized titanium CAD/CAM abutments. (A) frontal view, (B) sagittal view.

Fig. 6.

CAD/CAM abutments. (A) Connected customized abutments to implants, (B) Provisional restoration on the CAD/CAM abutments.

Fig. 7.

Fabrication of zirconia ceramic prostheses. (A) Digitally designed zirconia framework, (B) Fabricated porcelain veneered zirconia fixed dental prostheses.

Fig. 8.

Definitive zirconia prostheses. (A) Delivery of definitive zirconia ceramic prostheses, (B) Panoramic view of definitive prostheses in the patient.

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