Osseointegrated implant (Branemark System) を用いて咬合再建を行った5例 : 咀嚼能力の変化を中心に

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Clinical cases of osseointegrated implants (Brånemark System) in the Department of Oral Surgery, Nagoya University Hospital were reported in this paper. Especially the changes of masticatory efficiency after the treatment was discussed. Results obtained were as follows: 1) Five patients who had an extreme difficulty in wearing conventional removable dentures were included in the present study. The subjects consisted of 2 males and 3 females, and their ages ranged from 50 to 66 years. 2) The lesion was an edentulous mandible in 3 cases and partially edentulous maxilla in 2 cases. One of the maxillary cases had no anteior teeth, and the other had no posterior teeth bilaterally. 3) Six fixtures were installed in each mandibular case. The anterior maxillary case received 4 fixtures, and the posterior maxillary case received 5 fixtures. A total of 27 fixtures were thus installed in the 5 cases. One fixture in the mandible failed to osseointegrate, giving the fixture survival rate of 96.3%. 4) Postoperatively, we observed transient paralysis of the mental nerve in one mandibular edentulous case and transient TMJ symptoms in another edentulous case after insertion of the superstructure. 5) The comparison was made between pre-operative and post-operative masticatory efficiencies. All of the cases showed remarkable improvement, the mean score being 38 preoperatively and 96 postoperatively. Results from the present study indicate that osseointegrated implant therapy is a useful method for occlusal reconstruction if the case is discreetly selected and the team approach ispursued by well-trained oral surgeons and prosthodontists.

Osseointegrated implant (Branemark System) を用いて咬合再建を行った5例 : 咀嚼能力の変化を中心に

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