Chan F W, Harcourt J K, Brockhurst P J
Royal Dental Hospital of Melbourne.
Aust Dent J. 1993 Feb;38(1):39-45. doi: 10.1111/j.1834-7819.1993.tb05449.x.
This laboratory study compared the retention of prefabricated posts in well-fitting and loose-fitting post canals using different cement materials. Eighty-three human teeth were prepared for post placement. One of zinc phosphate cement, polycarboxylate cement, glass ionomer cement or resin cement was used to cement each post in place. A tensile force was applied to remove each post and the separation force was recorded. Posts cemented with the resin cement were the most difficult to dislodge. Posts cemented into loose-fitting canals exhibited greater resistance to dislodgment than posts cemented into well-fitting canals irrespective of the type of cements used.
