Biological considerations on the use of zirconia for dental devices.
Zirconium oxide, known as zirconia, is a ceramic material with optimal esthetical and mechanical properties. Zirconia stabilized with yttrium oxide has the best properties for medical uses. A stress on ZrO2 surface creates a crystalline modification that opposes to propagation of cracks. Zirconia core for fixed partial dentures (FPD) on anterior and posterior teeth and on implants are now available. Clinical evaluations after 3 years report good percentage of success for zirconia fixed partial denture. Zirconia biocompatibility was studied in vivo and in vitro by orthopedic research; no adverse responses were reported on insertion of ZrO2 samples in bone or muscle. In vitro experimentation showed absence of mutation and a good viability of cells cultured on this material.
Manicone
P F
PF
Institute of Clinical Dentistry, Catholic University, Rome, Italy. igident@rm.unicatt.it
Rossi Iommetti
P
P
Raffaelli
L
L
Paolantonio
M
M
Rossi
G
G
Berardi
D
D
Perfetti
G
G
D003757:Dental Implantation / Q000295:instrumentation*; D003830:Denture, Partial, Fixed; D006801:Humans; D015040:Zirconium / Q000627:therapeutic use*
D015040:Zirconium; C028541:zirconium oxide