並列タイトル等咬合印象法がインプラント作業模型上の咬合接触再現性に与える影響について
一般注記The bite impression technique has been developed and applied in the fabrication of crowns. However, few reports have demonstrated its accuracy in reproducing the occlusal contacts of implant superstructures. We investigated the bite impression technique for its reproducibility of occlusal contacts on working casts for implants. Eight patients were selected who each had a single-tooth implant to replace a missing posterior tooth. A custom device was created to measure occlusal contacts and their relationship with the opposing teeth and the implant body. Image analysis was used to compare intraoral measurements from working casts made from a bite impression with those from the open tray impression technique. Good reliability was determined for the measuring device and measurements in this study. We found that the occlusal contact points and areas on the custom measuring device were significantly better for the working casts made from bite impressions than for those from open tray impressions (p<0.001). Furthermore, significant differences were observed in the occlusal contact areas and contact points on both teeth adjacent to the implant (p≦0.001), with the bite impression working casts significantly more reproducible than the open tray impression casts. Our data suggest that the bite impression technique accurately reproduces occlusal contacts for implants.
2013
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）