Comparison of retentive properties of four post systems
作者： Brett I. Cohen , Barry Lee Musikant , Allan S. Deutsch
DOI: 10.1016/0022-3913(92)90327-7
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摘要: This study compared the retention of posts in root for various diameters (1.3 mm and 1.6 mm) three prefabricated post systems (Unity, Filpost, Brasseler) with that previously reported No. 1 2 Flexi-Post systems. The experiment was divided into groups comprising 10 samples each system studied. In group 2, Filpost cemented both a resin cement zinc phosphate cement. Retention values were obtained modified universal testing machine. 1.3 from most to least retentive (zinc phosphate) greater than (resin) Brasseler phosphate), Unity (resin). achieved higher it did
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