[Experimental mechanics analysis of posterior galvano-ceramic bridges made by Ni-Cr pontic fired bonding galvano caps].
OBJECTIVE
To measure the fracture strength of the posterior galvano-ceramic bridges made by Ni-Cr pontic fired bonding galvano caps with highly temperature-resistant adhesive and to provide reference data for clinical application.


METHODS
A standard low dental cast was achieved with 46 missing. Five posterior galvano-ceramic bridges made by Ni-Cr pontic fired bonding galvano caps, with abutments being 47 and 45. The low dental cast was fixed on the panel of the universal testing machine, vertical load given on the central of the pontic as the velocity of 2 mm/min.


RESULTS
The fracture strength of the posterior galvano-ceramic bridges made by Ni-Cr pontic fired bonding galvano caps was (877.00+/-126.53) N, the fracture strength of the metal frame was (1,448.94+/-51.02) N.


CONCLUSIONS
Posterior galvano-ceramic bridges made by Ni-Cr pontic fired bonding galvano caps could endure the normal human occlusal force.
Zhou
Tuan-Feng
TF
Clinic, Peking University School and hospital of Stomatology, Beijing 100034, China.
Wang
Xin-Zhi
XZ
Zhang
Gui-Rong
GR
D000044:Dental Abutments; D003799:Dental Stress Analysis; D008422:Materials Testing; D016876:Metal Ceramic Alloys
D016876:Metal Ceramic Alloys