2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
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1、,PROCEDURE,,,Make incision according to design requirement, and cut the mucoperiosteum. The design in Video is Triangle Lobe. Embedded incisions are usually on the crest of the alveolar ridge. Make vertical incisions fro

2、m top to bottom between 2 and 3, and then turn oblique down at interdental papilla , then horizontal incisions were made, and slightly close to the palate along the neck of maxillary lateral incisor to the gap.,1,PROCEDU

3、RE,The incision was extended to the Left maxillary central incisor.(The buccal-lingual bone needs to be preserved at least 1 mm, and the bone between the buccal-lingual bone and the adjacent teeth should be at least 1.5

4、 mm. The space of the missing teeth should be at least 7 mm.),1,,,Remove the mucoperiosteum from the subperiosteum with a stripper and expose the bone in the implant area.Grinding the bone tips with a ball drill (rot

5、ating speed 600 rpm), to shape the bone and to locate.,2,,,,Use pioneer drills to reach a predetermined depth (800 rpm). In general, the depth of the hole needs to be 1 mm deeper so that the cervical margin of the implan

6、t is 1 mm lower than the bone surface. Then measure the depth and direction of the implant with a directional bar.,3,,,,,After reaming step by step with stepped drill and finally reaching the requested diameter, the dept

7、h and direction of the hole can be measured by measuring rod, which should be slightly deeper than the 1mm of the implant.,3,,,,Use neck shaping drill for neck shaping (rotational speed: 300 rpm).,4,,,,Use tapping drill

8、for tapping (rotational speed: 15 rpm), but for patients with large aperture or osteoporosis, we can omit this step.,5,,,,,,,Rotate the implant manually or mechanically into alveolar bone. Note that the rotational speed

9、is 15 rpm and flushing is not necessary. It is important to note that the white bar mark must be aligned directly to the front.,6,,,,,,When the implant is in place, remove the implant carrier.,7,,,,,,,8,Screw the closed

10、screw manually or mechanically into the implant.  The bone surface of the implant was perforated densely with a ball drill. Cover the cheek with the autologous bone debris which are collected during the preparation

11、 of the implant and demineralized frozen-dried bovine bone meal (Bio-Oss, Geistilich, Switzerland) with a thickness of 3-4 mm and then put an absorbable collagen film on the surface. (Bio-Gide, Geistilich, Switzerland).,

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