Related Experiment Videos
Ferrule design and fracture resistance of endodontically treated teeth
1University of California, School of Dentistry, Los Angeles.
The Journal of Prosthetic Dentistry
|May 1, 1990
Abstract:
This study evaluated the fracture resistance of pulpless teeth with various ferrule designs and amounts of coronal tooth structure. One millimeter of coronal tooth structure above the crown margin substantially increased the fracture resistance of endodontically treated teeth, whereas a contrabevel at either the tooth-core junction or the crown margin was ineffective. The thickness of axial tooth structure at the crown margin did not appreciably improve resistance to fracture.