[問題] locating mb2

看板teeth_salon作者Dmitry (Dmitry)時間11年前 (2013/04/28 21:16)推噓4(4推 0噓 18→)

留言22則, 10人參與討論串1/2 (看更多)

某網站上看到的(Endodontic Therapy);請問一下以下步驟在實務根管經驗上有落差嗎? 1.Road Map. Using a rhomboid access, follow the road map that the developmental grooves form on the pulpal floor. The MB2 canal is palatal and often mesial (under the marginal ridge) to a line drawn between the MB1 and palatal canal. 2. Remove Mesial Shelf. After locating the MB1 canal, remove the mesial dentin shelf which represents the roof of the pulp chamber over-lying the MB2 orifice. Enter the MB2 canal from a flat pulpal floor angling a precurved file from the distal toward the mesial. 3. Highlight. Use stains (eg, 1% methylene blue or dentin powder created by drilling) to highlight the pulp chamber anatomy. 4. Trough. Trough and search with low-speed burs or ultrasonic tips, beginning from the MB1 orifice. Also try not to exceed a depth of 2 mm to 3 mm as this could weaken the mesial furcation. 5. Bubble Test. A bubble test with sodium hypochlorite in the pulp chamber may be helpful in detecting organic tissue within the MB2 canal. 6. Chelate. Chelating agents (ie, EDTA) can assist in removing the smear layer and softening calcifications inside the pulp chamber, allowing for easier access to canal openings. 7. Remember the Isthmus. Maxillary MB roots are not perfectly round in cross-section. Different anatomic configurations are present at different levels of the same root, especially in the apical 4 mm. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.36.109.5

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hardtwo

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hardtwo

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Dmitry

04/28 22:16, , 3^F

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