[Application of insertion-type separate post on ceramic restoration of molar residual root and crown with low occlusogingival distance].
OBJECTIVE
To 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.


METHODS
19 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.


RESULTS
None 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.


CONCLUSIONS
Insertion-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.
Chen
Zhi-Hong
ZH
Dept. of Prosthodontics, The Affiliated Stomatological Hospital, College of Medical Science, Zhejiang University, Hangzhou 310006, China.
Hu
Jun
J
Chen
Xin-Min
XM
Huang
Longlong
L
D002516:Ceramics; D003188:Composite Resins; D003442:Crowns; D000044:Dental Abutments; D003776:Dental Porcelain; D006801:Humans; D008963:Molar; D011176:Post and Core Technique; D014092:Tooth Root
D003188:Composite Resins; D003776:Dental Porcelain