Rehabilitation of edentulous maxilla with implant-supported milled bar overdenture using CAD/CAM customized abutment: A case report

Woon Ji; Jae-Seung Chang; Joo-Hyun Kwon; Sunjai Kim

doi:10.4047/jkap.2016.54.2.146

Journal List > J Korean Acad Prosthodont > v.54(2) > 1034866

Go to TopGo to Top Go to BottomGo to Bottom

TOOLS

Ji, Chang, Kwon, and Kim: Rehabilitation of edentulous maxilla with implant-supported milled bar overdenture using CAD/CAM customized abutment: A case report

CASE REPORT

J Korean Acad Prosthodont 2016;54(2):146-151.

Published online: 18 December 2016

DOI: https://doi.org/10.4047/jkap.2016.54.2.146

Rehabilitation of edentulous maxilla with implant-supported milled bar overdenture using CAD/CAM customized abutment: A case report

Woon Ji, Jae-Seung Chang, Joo-Hyun Kwon, Sunjai Kim^∗

Department of Prosthodontics, School of Dentistry, Yonsei University, Seoul, Republic of Korea

∗Corresponding Author: Sunjai Kim Department of Prosthodontics, Gangnam Severance Dental Hospital, Unjuro 211, Gangnam-gu, Seoul 06273, Republic of Korea +82 2 2019 3568: e-mail, sunjai@yuhs.ac

Received 6 August 201525 August 2015 Accepted 2 September 2015

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

In patients with fully edentulous maxilla, fabrication of implant-supported overdenture can be a viable treatment option, when a minimum of six implants were strategically placed. Among several attachment systems used for implant-supported overdentures, milled-bars prevent rotational movement of denture, thus showing great stability, and have the advantage of splinting multiple implants with each other. In this case report, a milled-bar supported overdenture was fabricated for a patient suffering from condition of fully edentulous maxilla with severe ridge resorption in the anterior residual ridge. Seven implants composed of three different systems were effectively utilized by CAD/CAM customized abutment and cement-retained milled bar. (J Korean Acad Prosthodont 2016;54:146-51)

Keywords: Dental implant, Implant overdenture, Milled-bar, CAD/CAM customized abutment

REFERENCES

1.Doundoulakis JH., Eckert SE., Lindquist CC., Jeffcoat MK. The implant-supported overdenture as an alternative to the complete mandibular denture. J Am Dent Assoc. 2003. 134:1455–8.

2.van Kampen F., Cune M., van der Bilt A., Bosman F. Retention and postinsertion maintenance of bar-clip, ball and magnet attachments in mandibular implant overdenture treatment: an in vivo comparison after 3 months of function. Clin Oral Implants Res. 2003. 14:720–6.

3.Petropoulos VC., Smith W., Kousvelari E. Comparison of retention and release periods for implant overdenture attachments. Int J Oral Maxillofac Implants. 1997. 12:176–85.

4.Trakas T., Michalakis K., Kang K., Hirayama H. Attachment systems for implant retained overdentures: a literature review. Implant Dent. 2006. 15:24–34.

5.Krennmair G., Krainhöfner M., Piehslinger E. Implant-supported mandibular overdentures retained with a milled bar: a retrospective study. Int J Oral Maxillofac Implants. 2007. 22:987–94.

6.Zarb GA., Bolender CL., Eckert SE., Fenton AH., Jacob RF., Mericske-Stern R. Prosthodontic treatment for edentulous patients: Complete dentures and implant-supported prestheses. 12th ed.Mosby;2004.

7.Zitzmann NU., Marinello CP. Treatment plan for restoring the edentulous maxilla with implant-supported restorations: removable overdenture versus fixed partial denture design. J Prosthet Dent. 1999. 82:188–96.

Fig. 1.

Panoramic radiograph (A) and intraoral photo (B) after uncovery surgery. Implant on i26 was removed due to failure of osseointegration.

Fig. 2.

Final impression taking with individual tray and poly vinyl-siloxane (A), Definitive cast fabrication (B), Mounting of definitive cast after jaw relation record taking (C), Artificial tooth arrangement (D).

Fig. 3.

Digital image of master cast and wax denture (A, B). CAD/CAM abutment designing considering enough space for bar, framework and denture tooth (B, C).

Fig. 4.

CAD/CAM abutment and acrylic resin bar pattern. Cast and finished milled bar, Right (A, B, C), Left (D, E, F).

Fig. 5.

Pick-up impression of milled-bar (A), Framework fabrication (B), Artificial tooth arrangement (C).

Fig. 6.

Sandblasting (A), Cementation & excessive cement removal (B), Setting (C).

TOOLS

Similar articles