A restoration of the cast post-core crown for seniles' posterior roots and teeth with severe damaged crown

Objective: A purpose of this paper is to investigate and evaluate a clinical effect of the cast post-core crown in ration of seniles' posterior roots and teeth with severe damaged crown. Methods: A routine preparation of roots or teeth with severe amaged crown when the root canal therapy was indicated. Impression taken, model poured and a wax pattern of the post-core casting abricated. An initial try-in, adjustment and bonding. Therefore, a regular preparation on a coronal portion of the post-core casting for percelain crown had been processed .A clinical try-in ,adjustment, polishing and cementation by GC mer for minimizing the marginal cro-leakage at the most. Results : A clinical follow-up from one to three years shows that the marginal adaptation of all the cast post-core crowns with good retention is tight and smooth to the preparative area of teeth through dental clinical examination. No plainly abnormalities to be noticed on the surrounding gingivaltissue and no visible secondary carious lesions to be revealed on the radiograms. Conclusion: The cast post-core crown could be served as an effective way to well restore seniles' posterior roots and teeth with severe damaged crown and to maintain their normal masticatory function and oral health.