Often times the reconstruction of a tooth is a very difficult task to achieve if you do not have the support of a healthy dental tissue. What does that mean? When the destruction of a tooth is very large due to dental decay or to a fracture and there is nothing left but a few and very thin crown walls along with the root, we can not make a really stable and strong direct reconstruction .We need increased retention to obtin an enhanced resistance. For this reason, there is the solution of inserting posts in the root canal space.
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