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Volume 15 , Issue 5
September/October 2000

Pages 722730


Placement of Posterior Mandibular and Maxillary Implants in Patients with Severe Bone Deficiency: A Clinical Report of Procedure

Leonard Krekmanov, DDS, PhD


PMID: 11055139

The purpose of this investigation was to modify the method for implant placement in the posterior parts of the arches for fixed implant-supported prostheses using minimally invasive surgery. Eighty-six implants were placed posterior to the mental foramina in patients with severely resorbed mandibles, and 75 implants were placed in the posterior severely resorbed maxilla. Bone grafting from the mandible to the maxillary sinus was performed in 9 patients with severely atrophic maxillae. In all patients, optimal use of the anatomic features of the arch was achieved by tilting the implants. Patients were followed up for 12 to 123 months after prosthesis connection (mean 18 months). Three maxillary implants were lost at the time of abutment connection: 1 in the pterygoid plate, 1 close to the posterior sinus wall, and 1 placed in the palatal cortex. One implant was mobile approximately 1 year later, apparently because of an ill-fitting prosthesis. In the mandible, no implants were lost. The method described for the treatment of edentulous arches represents an alternative therapy to several others currently in use. This minimally invasive surgical procedure should be applicable in an outpatient clinic for treatment of severely resorbed posterior portions of the arches with implant-supported prostheses. (INT J ORAL MAXILLOFAC IMPLANTS 2000;15:722730) Key words: bite force, bone graft, dental cantilever bridge, dental prosthesis, endosseous dental implantation, endosseous dental implants, maxillary sinus, mandibular nerve, partially edentulous jaw


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