Clinical analysis of seventeen patients after using column split-core crown to repair residual crown and root of mandibular second molar

Discussed how to use column split-core crown to repair the indications of the residual crown and root of posterior teeth,as well as its clinical results.Root canal treatment of the residual root,repaired the residual crown and root of posterior teeth with column split-core crown,and then used it as a fixed bridge abutment.No loose,no pain,no loss and jaw bite was in a good recovery compare to the standard after 1-2 years follow-up.It is a good method to use column split-core crown to repair the residual crown and root of posterior teeth under certain conditions.