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- 2-Stage Implant Placement(32)
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Found 159 Results

Andrea Ravidà, DDS, MS, PhD
Anu Viswanathan DDS, MDS

Prosthetic-Surgical Approach to Regenerative Treatment for Peri-Implantitis

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Clinical presentation of tooth #31 showing radiographic evidence of bone loss, profuse bleeding on probing (BOP), deep probing depths, and suppuration, indicative of peri-implantitis with a Class I-infraosseous (c) circumferential-type defect, as described in the study by Monje et al. (2019) Clin Implant Relat Res, 21(4)635-643.

Crown removal by the prosthodontist, followed by placement of a healing abutment for non-surgical therapy using PerioFlow®. After therapy, a cover screw was placed, and the tissue was allowed to heal over the implant for eight weeks.

Surgical treatment initiated with a midcrestal incision and full-thickness flap elevation. Granulation tissue was removed using a surgical curette, revealing a deep infrabony defect.

Implant thoroughly decontaminated using Perioflow® with erythritol powder to ensure a clean surface for regeneration.

rhPDGF-BB was used to hydrate bone grafting materials (vallos® Demineralized Cortical Granules and Geistlich Bio-Oss®), which were first hydrated with sterile water before rhPDGF-BB was added. The materials were mixed in a 1:1 ratio and allowed to sit for 10 minutes before being applied to the deep infrabony defect to promote regeneration.

Flap closed primarily with 5-0 PTFE horizontal mattress and single interrupted suture for secure closure.

Collagen membrane stabilized with 5-0 chromic gut sutures using the lasso technique.

After 5 months of healing, significant bone gain is evident. Geistlich Bio-Oss® was placed on the buccal site to enhance thickness, covered with an amnion-chorion membrane. A healing abutment was placed at this stage.

Two-year follow-up shows disease resolution with shallow probing depths, no bleeding or suppuration, and complete bone gain. A new crown was fabricated with an increased final abutment height (>2mm), contributing to optimal maintenance and long-term stability based on evidence supporting its role in promoting long-term success. A second surgery may be necessary to gain additional tissue thickness or cover residual thread exposure to achieve the desired long-term results.

Baseline full-mouth intra-oral view: the residual maxillary teeth were preliminarily reconstructed with a composite mock-up. The horizontal atrophy of the posterior areas of the maxilla is clearly visible.

The cone beam, realized with a radio-opaque diagnostic template, shows inadequate bone volume for implant placement in all the analyzed sites.

The use of the diagnostic template during the augmentation procedure helps to highlight the presence of bone defects in relationship to the restorative plan and future position of implants.

Large Geistlich Bio-Oss® particles are directly applied inside the sinus with Geistlich Bio-Oss Pen®.

The Geistlich Bio-Gide®, fixed with titanium pins is used to protect and stabilize the augmented site. As the surgical template shows, the bone augmentation is based on the future restorative project following the principle of PGR.

The same surgical procedure is performed on the left posterior side of the maxilla.

Cone-beam 6 months after surgery and prior to implant placement. The relationship between the template used for diagnosis and the bone crest reveals adequate bone volume to place implants in the correct prosthetically driven position.

Implant placement was guided by the same template utilized for diagnosis and bone augmentation.

Final view of the prosthetic reconstruction demonstrates bio-mimetic integration of implant-supported prostheses and ceramic veneers bonded to residual natural teeth.

The panoramic radiograph shows adequate integration of the implants and absence of peri-implant bone resorption.

A flap has been raised and reveals a significant facial and palatal defect at congenitally missing site #10.

Harvested ramal graft. Slightly over-sized to allow for mitering and harvest of particulate autograft with a bone trap on the suction.

Onlay graft now secured with two fixation screws (Stryker) with a lag screw technique. Geistlich Bio-Oss Collagen® has been placed on the palatal aspect of site #10

Combination of a fixated onlay graft with Geistlich Bio-Oss®/autograft particulate graft at the periphery and over the facial plate of the adjacent dentition

Geistlich Mucograft® matrix placed over facial augmentation of the adjacent dentition and ridge crest of the augmented site

Closure following ramal grafting and Geistlich Mucograft®matrix application

Implant placement with static guide and dental implant hand driver

Implant placement with slight subcrestal placement of the platform just prior to osteoplasty by the periodontist.

A flap has been raised and reveals a significant facial and palatal defect at congenitally missing site #10.

Harvested ramal graft. Slightly over-sized to allow for mitering and harvest of particulate autograft with a bone trap on the suction.

Onlay graft now secured with two fixation screws (Stryker) with a lag screw technique. Geistlich Bio-Oss Collagen® has been placed on the palatal aspect of site #10

Combination of a fixated onlay graft with Geistlich Bio-Oss®/autograft particulate graft at the periphery and over the facial plate of the adjacent dentition

Geistlich Mucograft® matrix placed over facial augmentation of the adjacent dentition and ridge crest of the augmented site

Closure following ramal grafting and Geistlich Mucograft®matrix application

Implant placement with static guide and dental implant hand driver

Implant placement with slight subcrestal placement of the platform just prior to osteoplasty by the periodontist.

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