Koj puas paub txog NiTi alloy hlau?
1940, kub arch hlau, cobalt-chromium alloy hlau thiab stainless hlau round hlau. Xyoo 1960, martensitic stabilized alloys: feem ntau yog ua los ntawm nickel-titanium alloys deformed nyob rau hauv lub xeev martensitic. Hom archwire no muaj qhov nruj nruj thiab tuaj yeem tsim kho lub zog sib zog. Tsis muaj kev hloov pauv martensitic tshwm sim los ntawm kev ntxhov siab lossis qhov kub thiab txias, yog li tsis muaj kev nco zoo lossis superelasticity. Xyoo 1980, Suav nickel-titanium alloy thiab Japanese nickel-titanium alloy archwires yog austenite-activated alloys: uas yog, lawv tau pom lub xeev austenite hauv ib lub xeev thiab tsis muaj lub xeev martensitic tshwm sim los ntawm qhov kub thiab txias thaum muab tso rau sab hauv lossis sab nraum lub qhov ncauj. , lub xeev martensitic tsuas yog tshwm sim los ntawm kev ntxhov siab thiab muaj superelasticity, tab sis tsis muaj lub cim xeeb zoo. Hom archwire no muaj kev ua haujlwm zoo heev thiab tsis tshua muaj zog, thiab tuaj yeem tsim kho tsis muaj zog. Tus yam ntxwv ntawm Zuoda yog tias lub zog nws tsim yog tas li ntawm qhov pib pib mus rau theem kawg, thiab cov nyhuv zoo dua thaum kho cov hniav tsis sib xws thaum ntxov. Qhov tsis zoo yog tias nws tsis tuaj yeem khoov rau hauv cov duab ntawm chav tsev kub thiab tsis yooj yim rau vuam. Yog tias lub tuam txhab no tau siv los ua lub ntsiab archwire, feem ntau nws tuaj yeem ua rau qhov tsis zoo ntawm qhov kev nthuav dav lossis kev cog lus, thiab nws yuav nyuaj rau tsim kom muaj qhov zoo premolar thiab molar alignment.
Xyoo 1990, martensite-activated npib tsib xee-titanium alloy: uas yog, TTR qis dua qhov kub ntawm qhov ncauj lossis ze rau qhov qhov ncauj. Nws muaj nyob rau hauv ntau lub xeev ntawm chav tsev kub thiab yooj yim rau deform. Thaum muab tso rau hauv qhov ncauj kab noj hniav, nws yog tshwm sim los ntawm kev ntxhov siab thiab chav tsev kub. Lub martensite hloov mus rau hauv austenite tib lub sijhawm, uas yog, muaj cov duab nco ua haujlwm thiab superelasticity. Nws yog ib qho yooj yim rau deform nyob rau hauv chav tsev kub (nyob ib ncig ntawm 25 degree) thiab hauv qab no, tab sis thaum nws ncav cuag ib tug tej yam kub thiab txias (nyob ib ncig ntawm 32 degree), nws yuav rov qab mus rau nws cov qub preformed zoo, uas qhia cov duab nco thiab superelasticity yam ntxwv. Lub hom ntse ntawm Beijing Shengmart Technology Co., Ltd. thiab NitinolHA hom ntawm 3M tuam txhab yog ob qho tib si cov khoom sawv cev. Vim hais tias ntawm tus yam ntxwv no, lub tshav kub-activated npib tsib xee-titanium archwire tau yooj yim manipulated thiab molded los ntawm kev tswj nws ntawm ib txwm kub thiab hauv qab no, thiab muab tso rau hauv lub bracket. Thaum qhib los ntawm cua sov hauv qhov ncauj kab noj hniav, nws tuaj yeem tsim muaj peev xwm rov qab zoo thiab muab lub zog xav tau rau orthopedics. Vim hais tias lub tshav kub-activated nickel-titanium orthopedic hlau muaj cov yam ntxwv ntawm "softening thaum raug txias thiab ua elastic thaum qhib los ntawm tshav kub", cov neeg mob tuaj yeem hloov lub zog orthodontic los ntawm kev tuav dej txias lossis dej kub hauv lawv lub qhov ncauj raws li kev qhia ntawm kws kho mob. , ua kom yooj yim dua. Nws txhawb kev kho los ntawm tus kws kho hniav thiab txo qhov tsis xis nyob ntawm kev kho thawj zaug. Ntxiv thermodynamic npib tsib xee-titanium alloy: TTR kub yog siab tshaj qhov kub ntawm qhov ncauj, txog 40 degree. Nyob rau hauv txoj kev no, thaum lub nickel-titanium archwire muab tso rau hauv lub qhov ncauj kab noj hniav, nws tseem nyob rau hauv ib tug multi-dimensional lub xeev, thiab cov archwire kuj yog mos. Thaum cov dej kub tuav hauv lub qhov ncauj, muaj austenite transformation. Yog li ntawd, lub zog orthodontic tsis muaj zog thiab tuaj yeem siv los ua thawj archwire rau cov neeg laus thiab cov neeg mob uas muaj kab mob periodontal. Cov tooj liab uas muaj nickel-titanium hlau uas tsim los ntawm Omcro thiab Nyiv tus qis-lag LH nickel-titanium archwire muaj qhov ua tau zoo.
Clinical daim ntaub ntawv ntawm nickel-titanium alloy hlau:
1. Nickel-titanium caij nplooj ntoos hlav: Nickel-titanium laub caij nplooj ntoos hlav thiab nro caij nplooj ntoos hlav yog springs siv nyob rau hauv orthodontics. Lawv muaj cov khoom tshwj xeeb ntawm npib tsib xee-titanium superelasticity thiab tsim nyog rau kev kho hniav kom qhib qhov khoob ntawm cov hniav thiab rub cov hniav sib txawv. Lub nickel-titanium coil caij nplooj ntoos hlav tuaj yeem tsim tau kwv yees li 50g ntawm lub zog thaum ncav 1 hli. Nickel-titanium coil springs muaj cov khoom zoo elasticity thiab tuaj yeem tsim softer thiab ruaj khov zog nyob rau hauv lub xeev stretched. Lub zog attenuation yog me me, thiab nws tuaj yeem tsim lub zog orthodontic zoo tagnrho uas ua tau raws li cov kev xav tau ntawm cov hniav txav. Ua tau raws li qhov xav tau ntawm lub cev. Nickel-titanium hlau nro springs muaj siab elasticity thiab tsis tshua muaj deformation tus nqi mus tas li. Piv nrog cov hlau tsis muaj steel hlau ntawm tib txoj kab uas hla, qhov kho kom raug tso tawm yog 3.5-4 zaus sib txawv. Yog li ntawd, nyob rau hauv daim ntawv thov ntawm orthodontic kev kho mob, cov neeg mob tsis tau tsuas yog muaj tsawg mob, tab sis kuj xav tias mos thiab ntev lub zog, thiab lub sij hawm rau kev rov qab mus xyuas yog txo, lub chav kawm ntawm kev kho mob yog shortened, thiab cov kev ua tau zoo dua. Nws yog ib qho tshiab thiab zoo heev txhua yam cuab yeej hauv kev kho hniav orthodontic.
2. Siv rau kev kho kom ntxov thiab qib ntawm tus neeg mob cov hniav. Vim lub superelasticity thiab zoo lub cim xeeb khoom ntawm nickel-titanium alloy archwires thiab qhov kev ntxhov siab-strain nkhaus, nickel-titanium alloy archwires yog tam sim no niaj hnub suav nrog hauv orthodontic system raws li thawj theem hauv kev kho mob. arch hlau, kom tus neeg mob tsis xis nyob yuav raug txo kom tsawg. Txij li tam sim no muaj ntau qhov sib txawv ntawm cov kab ncaj nraim arch kho thev naus laus zis, MBT thev naus laus zis pom zoo kom siv 0 016-inch kub-activated nickel-titanium alloy arch wire (HANT wire), thiab DEMON self-ligating bracket thev naus laus zis pom zoo kom siv tooj liab-muaj cua sov-activated nickel-titanium alloy ua los ntawm Omcro. Alloy arch wire (theem hloov pauv kub yog li 40 degrees), O-PAK orthodontic technology pom zoo kom siv 0.016-inch super-elastic nickel-titanium alloy arch hlau rau thaum ntxov alignment thiab leveling.
