Objective: To explore the prosthetic design and procedure of resid ual crown with complete root canal imperforation so as to solve the clinical pro blem of such cases.
探讨根管完全闭锁钙化残冠、残根的临床修复设计与方法,为修复临床对
类病例提供解决方案。
空公司（United Air Lines）；接收上限（upper acceptance limit）Objective: To explore the prosthetic design and procedure of resid ual crown with complete root canal imperforation so as to solve the clinical pro blem of such cases.
探讨根管完全闭锁钙化残冠、残根的临床修复设计与方法,为修复临床对类病例提供解决方案。
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