著者

宮本 洋二 藤澤 健司 福田 雅幸 湯浅 哲也 長山 勝 山内 英嗣 河野 文昭 日野出 大輔

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 (ISSN:09146695)

巻号頁・発行日

vol.18, no.2, pp.292-301, 2005-06-30 (Released:2014-11-15)

参考文献数

30

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The purpose of this study was to determine whether clinical success can be achieved with immediate loading in the edentulous maxilla and mandible with Brånemark implants (Nobel Biocare, Goteborg, Sweden) at one year after placement of the implants. The study sample consisted of 18 patients who were edentulous or about to lose all remaining teeth. A total of 118 fixtures were placed in 7 maxillae and 12 mandibles, including one bimaxillary patient. Ninety seven of the 118 fixtures were immediately loaded and 21 fixtures were submerged. Five to 7 fixtures (mean of 5.9 fixtures) supported the prostheses in the maxilla and 4 or 5 fixtures (mean of 4.7 fixtures) in the mandible. All fixtures immediately loaded were placed in the incisor and premolar regions of both maxilla and mandible. The mean lengths of the fixtures in the maxillae and mandibles were 14.8±1.8 mm and,15.6±2.6 mm, respectively.All of 41 immediate loading fixtures in the maxillae showed a placement torque of more than 35 Ncm. Although 5 of 56 fixtures in the mandibles showed a placement torque of 30 Ncm, remaining fixtures showed more than 35 Ncm. Provisional implant-supported fixed prostheses were fabricated in a laboratory from an impression and were placed on the next day after surgery. After a 4-to 7-month healing period, a definitive prosthesis was fabricated and placed. One implant, although still osseointegrated, was removed owing to bone resorption. In the patient, the provisional prosthesis was supported by 4 remaining fixtures;thus the cumulative survival rates for fixtures and prostheses were 99.0%and 100%, respectively, after one year. This clinical report suggests that immediate loading of implant-supported fixed prostheses in the edentulous maxilla and mandible can be a safe and successful treatment as long as patients are carefully and strictly selected.

著者

一柳 あゆみ 中島 幹雄 香月 武

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 (ISSN:09146695)

巻号頁・発行日

vol.19, no.3, pp.312-317, 2006-09-30 (Released:2014-07-01)

参考文献数

15

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We performed dental implant treatment following autogenous bone graft from the iliac bone to the sinus floor for a 68-year-old male patient with severe atrophy of the posterior maxilla. After bone grafting, the sinus floor was lifted up 10 mm to 15 mm. On the 14th day after the operation, fracture of the iliac crest occurred accidentally. An avulsion fracture of the anterior superior iliac spin at the lower part of the donor site was diagnosed. We treated the fracture conservatively, and after four weeks, the patient recovered to be able to go up and down the stairs. Four months later, four implants were inserted in the bone grafted area. For patients with severe atrophy of the posterior maxilla, sinus elevation with iliac bone harvesting is considered to be an effective method. However, there are possible complications associated with iliac bone grafting, such as in this case. Therefore, careful management after such an operation is necessary.

著者

中川 晃成 木村 欣史 一瀬 暢宏 松岡 建介 西村 賢二 井原 功一郎

出版者

公益社団法人 日本口腔インプラント学会

雑誌

日本口腔インプラント学会誌 = Journal of Japanese Society of Oral Implantology (ISSN:09146695)

巻号頁・発行日

vol.14, no.2, pp.287-292, 2001-06-30

被引用文献数

49

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We evaluated the validity, using the Dental Prescale system, of implant-retained fixed prosthesis on masticatory efficiency in unilateral free-end partial edentulism, compared with a removable partial denture. The population of this study was as follows: implant-retained fixed prosthesis for unilateral free-end dentition, 7; removable partial denture for unilateral free-end dentition, 7; upper or lower single complete denture and the natural dentition on the opposite side, 5; complete edentulism with complete denture wearing, 5; natural dentition, 7.<br/> In the present study, total occlusal force, the occlusal force support rate of the rehabilitation area, the change of occlusal forces on the teeth nearest the edentulous area, and the asymmetry index were evaluated, and the results were as follows:<br/> 1. Both the total occlusal force and the occlusal force support rate of the implant prosthesis were superior to the removable partial denture.<br/> 2. The occlusal force on the teeth nearest the edentulous area was increased with the removable partial denture, while the implant-retained prosthesis decreased.<br/> 3. The implant-retained prosthesis showed more symmetrical occlusal force than the removable partial denture.<br/> In summary, it was suggested that the implant-retained prosthesis is more suitable than a removable partial denture to obtain the appropriate occlusal force and to protect the residual teeth.