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Effect of prefabricated metal post‐head design on the retention of various core materials
Author(s) -
Zalkind M.,
Shkury S.,
Stern N.,
Heling I.
Publication year - 2000
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1046/j.1365-2842.2000.00535.x
Subject(s) - amalgam (chemistry) , materials science , glass ionomer cement , core (optical fiber) , post and core , composite number , composite material , dentistry , crown (dentistry) , chemistry , medicine , electrode
Retention of various post heads to core restorative materials is an important factor in the selection of prefabricated post systems and restorative materials for the restoration of endodontically treated teeth. This study examines the retention of a post–core prefabricated system in relation to core material and post‐head design. A total of 60 samples were prepared using two different post systems (ParaPost Plus® (PP) and ParaPost Unity® (PU), with amalgam, composite or glass–ionomer as one of the core materials. The samples were tested using the Instron testing machine. The PP was superior to the PU prefabricated post with respect to the retention of various core materials. Retention values in descending order of magnitude were found to be: composite, amalgam and glass–ionomer (significantly lower). The rhomboid serrated design of PP was superior in retention to the rounded smooth UP system. Composite material proved to be superior in retention, closely followed by amalgam, with glass–ionomer significantly less retentive.