explain zipping of the apical canala if the


Explain Zipping of the Apical Canal

a. If the preparation is continued with progressively larger and stiffer file lead to : zipping perforation or tear apical foramen.

Problem:

a. Fails to provide resistance form for gutta- percha.

b. Poorly packed cases that are vertically over- extended but internally under-filled.

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Biology: explain zipping of the apical canala if the
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