Distal extension mandibular removable partial denture with implant support

Canan Bural, Begum Buzbas, Sebnem Ozatik, Gulsen Bayraktar, Yusuf Emes, Canan Bural, Begum Buzbas, Sebnem Ozatik, Gulsen Bayraktar, Yusuf Emes

Abstract

This case report describes the fabrication of a distal extension removable partial denture (RPD) of a 65-year-old man with implant support. Loss of fibroelasticity of the peripheral tissues and reduced mandibular vestibular sulcular depth due to a previous surgical resection and radiotherapy at the right side were the main clinical factors that created difficulty for denture retention and stability. The fabrication of a mandibular RPD supported by anterior teeth and two bilaterally placed implants in the molar area to convert from Kennedy Class 1 design to Kennedy Class 3 implant-bounded RPD is reported. Retention and stability of the denture were improved with implant support on the distal extension site of the RPD. The common clinical problems about distally extended RPDs are lack of retention and stability due to the movement around the rotational axis. Dental implant placement to the distal edentulous site minimizes the potential dislodgement of the RPD is popular. Implant-supported RPD can be suggested as an advantageous and cost-effective treatment option for the partially edentulous patients.

Keywords: Dental implant; Kennedy Class I partial edentulous; distal-extension removable partial denture; implant-supported removable partial denture; locator attachment.

Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
Extraoral view before prosthetic treatment (a). Scar tissue and loss of fibroelasticity at the right buccal shelf area due to the surgical tumor resection and radiotherapy (b). No indication of abnormality on the left sight (c)
Figure 2
Figure 2
Preoperative intraoral view. Tissue healing at the right maxillary region and 2 left maxillary teeth (a). Mandibular teeth before prosthetic therapy (b)
Figure 3
Figure 3
Preoperative panoramic X-ray view
Figure 4
Figure 4
Implant surgery on the right (a) and left (b) first molar area
Figure 5
Figure 5
Panoramic X-ray view. Osseointegration of the implants at the postoperative 3rd month
Figure 6
Figure 6
Intraoral view of implant site at the postoperative 3rd month. (a) right side (b) left side
Figure 7
Figure 7
Locator abutments connected to the implants (a) right side (b) left side
Figure 8
Figure 8
Final impression with impression copings attached with locator analogs
Figure 9
Figure 9
Working model with locator analogs
Figure 10
Figure 10
Cingulum rests designed on the mandibular anterior teeth
Figure 11
Figure 11
Removable partial denture framework with T-bar clasps on the terminal abutment teeth, lingual plate as a major connector and circular design around the implant abutments
Figure 12
Figure 12
Maxillary complete denture (a) and mandibular implant-supported removable partial denture with locator attachments in the intaglio surface (b)
Figure 13
Figure 13
Intraoral view 4 weeks after delivery
Figure 14
Figure 14
Extraoral view after prosthetic treatment (a). Right (b) and left side (c)

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Source: PubMed

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