OBJECTIVETo study the clinical effects of insertion-type separate post and post-crown on ceramic restoration of molar residual root and crown with low occlusogingival distance and large root bifurcation angle.

METHODS19 molar residual roots and crowns with low occlusogingival distance(<3 mm) and large root bifurcation angle were involved in this study. Firstly, the root canals were prepared according to their natural directions without concerning about the common path of insertion. Accurate impression were taken with silicone. Insertion-type separate post and core-ceramic crown were fabricated respectively. Finally, the two parts were cemented together in patient after try-in, and the upper post cavity were filled with light-sensitive composite resin.

RESULTSNone of prostheses was loose and no abutment teeth fractured for 6-38 months. All of the fixed restorations were found with good marginal fitness and well masticatory function without sign of gingivitis.

CONCLUSIONInsertion-type separate post and post-crown is a better method to restore molar residual root and crown with low occlusogingival distance and large root bifurcation angle.