J Korean Acad Prosthodont.  2019 Apr;57(2):189-194. 10.4047/jkap.2019.57.2.189.

A case of maxilla implant overdenture using Pekkton telescopic attachment with severe alveolar bone resorption

• Park HE
• Lee WS
• Lee CW
• Lee SY

• KMID: 2444189
• DOI: http://doi.org/10.4047/jkap.2019.57.2.189

Abstract

It is necessary to set the correct occlusal plane and to distribute the occlusal force uniformly considering the state of the opposing dentition during the prosthetic of the single edentulous patient with severe alveolar bone resorption. Implant supported overdenture is superior to complete denture in terms of maintenance and stability, and limited implants are used in fully edentulous patients with high alveolar bone resorption. Telescopic attachments using a newly introduced material based on poly-aryl-ether-ketone (PAEK) have the advantages of typical telescopic copping, excellent abrasion resistance, and are lighter and more economical than conventional implant overdentures. In this case, we restored maxillary arch with a implant retained overdenture using the telescopic attachment made of Pekkton and the mandible was restored with fixed implant prosthesis. Through these procedures esthetic aspects and functional outcomes were satisfactorily achieved.

Keyword

Overdenture; Telescopic coping; Telescopic denture; Polyetheretherketone

MeSH Terms

Bite Force
Bone Resorption*
Dental Occlusion
Dentition
Denture, Complete
Denture, Overlay*
Humans
Mandible
Maxilla*
Prostheses and Implants

Figure

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  Fig. 1 (A) Pretreatment intraoral frontal view, (B) Pretreatment intraoral occlusal view.

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  Fig. 2 Panoramic radiograph before treatment.

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  Fig. 3 Cone beam computed tomography (CBCT) views with radiographic stent before implant installation. (A) area #14, (B) #13, (C) #23, (D) #24, (E) #25. Width and height of alveolar bone of #14, 13, 23, 24 and 25 were insufficient.

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  Fig. 4 Panoramic radiograph after implant installation.

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  Fig. 5 Fabrication of Pekkton telescopic attachment with CAD/CAM. (A) Stone model, (B) Design of telescopic abutment on CAD, (C) Design of telescopic coping on CAD, (D) Occlusal view of telescopic abutment try in (E) wax denture, (F) Final prosthesis.

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  Fig. 6 Final panoramic radiograph.

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  Fig. 7 Definitive restorations (frontal view).

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