Premium
Crown retention and cyclic loading (in vitro)
Author(s) -
Gundler Agneta,
Lockowandt Paul,
Erhardson Svante
Publication year - 1993
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.1993.tb01114.x
Subject(s) - crown (dentistry) , surface roughness , materials science , base (topology) , dentistry , composite material , mathematics , medicine , mathematical analysis
Cast gold crowns were luted on extracted and prepared human teeth with zinc phosphate cement and subjected to a fatigue test by cyclic loading. The correlation between crown retention and three retention variables was determined by the fatigue test. The results show that the smallest convergence angle tested, 20°, gave better retention than did angles of 40° and 60°, and that surface roughness, surface size, height, and base diameter of the preparations had no influence on crown retention within the parameter sizes tested.