Zirconia (ZrO2) is a ceramic materi

Zirconia (ZrO2) is a ceramic material with adequate mechanical properties for manufacturing
of medical devices. Zirconia stabilized with Y2O3 has the best properties for these
applications. When a stress occurs on a ZrO2 surface, a crystalline modification opposes the
propagation of cracks. Compression resistance of ZrO2 is about 2000 MPa. Orthopedic
research led to this material being proposed for the manufacture of hip head prostheses.
Prior to this, zirconia biocompatibility had been studied in vivo; no adverse responses were
reported following the insertion of ZrO2 samples into bone or muscle. In vitro experimentation
showed absence of mutations and good viability of cells cultured on this material.
Zirconia cores for fixed partial dentures (FPD) on anterior and posterior teeth and on
implants are now available. Clinical evaluation of abutments and periodontal tissue must
be performed prior to their use. Zirconia opacity is very useful in adverse clinical situations,
for example, for masking of dischromic abutment teeth. Radiopacity can aid evaluation
during radiographic controls. Zirconia frameworks are realized by using computer-aided
design/manufacturing (CAD/CAM) technology. Cementation of Zr-ceramic restorations can
be performed with adhesive luting. Mechanical properties of zirconium oxide FPDs have
proved superior to those of other metal-free restorations. Clinical evaluations, which have
been ongoing for 3 years, indicate a good success rate for zirconia FPDs. Zirconia implant
abutments can also be used to improve the aesthetic outcome of implant-supported
rehabilitations. Newly proposed zirconia implants seem to have good biological and
mechanical properties; further studies are needed to validate their application.

ผลลัพธ์ (ชวา) 1:

Zirconia (ZrO2) iki Keramik materi karo mechanical nyukupi kanggo Manufaktur
piranti medical. Zirconia owah karo Y2O3 nduweni paling apik kanggo iki
aplikasi. Nalika kaku occurs ing lumahing ZrO2, modifikasi kristal nglawan ing
panyebaran retak. Resistance komprèsi saka ZrO2 kira 2000 MPa. Ortopedi
riset mimpin kanggo bahan iki kang ngajokaken kanggo Pabrik prostheses sirah hip.
Sadurungé, Zirconia biocompatibility wis sinau ing vivo; ora respon salabetipun padha
dilapurake ngisor selipan saka conto ZrO2 menyang balung utawa otot. Ing pacobèn vitro
nuduhake anané mutasi lan panguripan apik saka sel budhoyo ing materi iki.
Zirconia intine kanggo dentures sebagean tetep (FPD) ing ngarepan lan untu wingking lan ing
ditanem saiki sing kasedhiya. Evaluasi Clinical saka abutments lan tissue periodontal kudu
dileksanakake sadurunge nggunakake. Zirconia opacity banget migunani ing kahanan Clinical salabetipun,
contone, kanggo masking untu abutment dischromic. Radiopacity bisa Aid evaluasi
sak kontrol radiographic. Rancangan Zirconia sing temen maujud kanthi nggunakake-ditulung komputer
desain / Manufaktur (CAD / CAM) teknologi. Cementation saka pambalèkan ZR-Keramik bisa
dileksanakake karo luting adesif. Mechanical saka zirconium oxide FPDs wis
mbuktekaken unggul iku pambalèkan free logam-liyane. Evaluasi Clinical, kang wis
wis aktif kanggo 3 taun, nunjukaké sukses tingkat apik kanggo FPDs Zirconia. Zirconia implant
abutments uga bisa digunakake kanggo nambah kasil estetis implant-didhukung
rehabilitations. Mentas ngajokaken Zirconia ditanem koyone duwe biologi lan apik
mechanical; pasinaon luwih are needed kanggo ndhedhes aplikasi sing.