Bloomden PEEK - lwm txoj hauv kev kho hniav tsis muaj hlau

Kev Taw Qhia Txog Polyetheretherketone (PEEK)

Polyetheretherketone (PEEK) yog cov khoom siv polymer ua xim hniav uas tau siv ua cov khoom siv hauv kev kho hniav tau ntau xyoo. Xyoo 1978, nws tau tsim los ntawm ib pawg kws tshawb fawb Askiv. Tom qab ntawd PEEK tau muag rau kev siv hauv kev lag luam. Los ntawm xyoo 1990s lig, PEEK yog ib qho tseem ceeb thermoplastic ua tau zoo los hloov cov khoom siv hlau cog.

daim ntawv sau npe

• PEEK Cov Pob Zeb

Kev siv sulfuric acid los etching ua rau muaj qhov chaw hloov pauv tshuaj lom neeg uas ua rau nws sib txuas tau zoo dua nrog cov khoom sib xyaw hydrophobic resin. Nws tau pom tias lub zog sib txuas rau cov cement sib xyaw resin yog siab txog 15.3 7.2 MPa tom qab khaws cia rau hauv dej ntawm 3780 C rau 60-90 s nrog sulfuric acid etching. Kev siv Piranha Acid thiab Siv Cov Tshuaj Adhesive Reagents tau pom tias tsim cov khoom sib xyaw resin tensile bond zog siab txog 23.4 +/- 9.9MPa hauv cov qauv PEEK laus. Tsis muaj qhov sib txawv tseem ceeb hauv lub zog tensile ntawm PEEK crowns thiab dentin abutments siv cov txheej txheem cua abrasion thiab sulfuric acid etching. Cov kev tshawb fawb no qhia tau tias PEEK tuaj yeem siv ua cov khoom siv capping hauv qab cov khoom sib xyaw resin.

• PEEK Abutment

Xav txog qhov txaus biocompatibility, implant kho abutments tuaj yeem tsim los ntawm kev siv PEEK. Cov pob txha resorption thiab cov nqaij mos mos o tsis txawv ntau ntawm PEEK thiab titanium abutments. Tsis tas li ntawd, cov microflora hauv qhov ncauj txuas rau PEEK abutments zoo ib yam li abutments ua los ntawm titanium, zirconia, thiab polymethyl methacrylate. Qhov sib phim ze ntawm cov elastic modulus ntawm pob txha rau PEEK nto txo ​​qhov cuam tshuam kev ntxhov siab thiab txhawb kev kho pob txha. Yog li ntawd, PEEK tuaj yeem ua pov thawj tias yog lwm txoj hauv kev rau titanium rau kev tsim cov implant abutments.

• PEEK hauv cov Prostheses uas tshem tau

Cov hniav cuav uas tshem tau ib txwm muaj (RDPs) nrog rau cov thav duab chrome-cobalt thiab cov clasps tau tshwm sim los ua ib qho kev xaiv kho mob pheej yig thiab kwv yees tau rau kev kho dua tshiab ntawm cov neeg mob uas tsis muaj hniav. Qhov kev nthuav qhia tsis zoo nkauj ntawm cov hlau buckles, qhov hnyav ntxiv ntawm cov prosthesis, qhov muaj peev xwm rau cov saj hlau, thiab kev ua xua rau cov hlau tau ua rau kev qhia txog ntau yam khoom siv thermoplastic, xws li nylon thiab acetal resins, rau hauv kev xyaum kho mob. Tau ob peb xyoos dhau los, lwm cov khoom siv prosthetic (PEEK) tau siv tau zoo hauv kev kho mob, tshwj xeeb tshaj yog hauv orthopedics. Cov khoom siv PEEK hloov kho nrog 20% ​​ceramic filler yog cov polymer ua haujlwm siab nrog biocompatibility siab, cov khoom siv kho tshuab zoo, tiv taus kub siab thiab tshuaj lom neeg ruaj khov. Ua tsaug rau nws cov elastic modulus ntawm 4 GPa, nws yog elastic li pob txha, txo qhov kev ntxhov siab xa mus rau abutment. Tsis tas li ntawd, cov xim dawb ntawm PEEK thav duab muab cov qauv zoo nkauj sib txawv dua li cov zaub thav duab hlau ib txwm muaj. Lwm qhov zoo ntawm cov khoom siv polymer no yog tshem tawm cov kev ua xua thiab saj hlau, zoo polishing zoo, qis plaque affinity thiab zoo abrasion tsis kam.

• PEEK cov xov hlau orthodontic

PEEK siv tau ua hlau kho hniav zoo nkauj. Piv rau lwm cov polymers, xws li polyvinylsulfone (PES) thiab polyvinylidene fluoride (PVDF), PEEK hlau kho hniav muaj zog dua. Cov zog kho hniav zoo sib xws tau txais piv rau titanium-molybdenum thiab nickel-titanium hlau.

• PEEK implants

Xyoo 1960, cov hniav cog rau hauv pob txha feem ntau yog ua los ntawm cov hlau ntshiab titanium thiab titanium alloys. Txawm hais tias titanium cog tau txais kev txhawb nqa los ntawm ntau cov pov thawj kev sim thiab kev tshawb fawb hauv tsev kho mob, tseem muaj qee qhov teeb meem hauv lawv txoj kev siv hauv tsev kho mob. Ib qho yog qhov ua rau titanium ua rau mob. Qhov thib ob, piv rau cov pob txha tib neeg, cov elastic modulus ntawm titanium siab dhau, uas yooj yim kho dua tshiab lossis poob ntawm cov pob txha. Qhov thib peb, cov hlau cog tsis muaj lub teeb ci, uas cuam tshuam rau qhov tsos.

Xyoo 1998, lub tuam txhab Askiv Invibio tau tsim cov khoom cog PEEK. Nrog rau kev tshwm sim ntawm cov khoom cog PEEK ua lag luam, kev tshawb fawb cuam tshuam tau maj mam nce ntxiv. PEEK thiab nws cov ntaub ntawv hloov kho muaj cov yam ntxwv zoo. Qee cov kws tshawb fawb ntseeg tias PEEK implants tuaj yeem zam kev tshwm sim ntawm cov teebmeem kev ntxhov siab, thiab tuaj yeem hloov cov hlau cog hauv kev phais yas, phais mob thiab lwm yam teb.

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1. Kev sib haum xeeb ntawm lub cev - Kev sib haum xeeb ntawm PEEK tau raug pov thawj, nrog ntau txoj kev tshawb fawb lees paub tias nws tsis muaj tshuaj lom. Txawm tias tom qab siv rau ntau txhiab tus neeg mob, PEEK tseem yog qhov kev xaiv zoo tshaj plaws piv rau cov hlau, uas tuaj yeem ua rau muaj kev tsis haum tshuaj txog li 15% ntawm cov pej xeem.

Cov khoom PEEK siv rau hauv kev cog rau hauv pob txha caj qaum, cov khoom siv kho mob raug mob, kev hloov pauv ntawm lub duav thiab lub hauv caug, thiab lwm yam khoom siv kho mob. Txawm li cas los xij, tsis muaj lus nug txog kev nyab xeeb ntawm PEEK hauv lub cev.

2. Cov khoom siv kho tshuab - PEEK muaj qhov sib piv zoo heev rau lub zog thiab qhov hnyav, uas yog qhov tseem ceeb rau kev cog hniav thiab cov khoom siv. Piv rau hlau, PEEK sib dua thiab xis dua rau tus neeg mob. Qhov kev nplij siab ntxiv no tsis ua rau muaj kev ruaj khov, vim PEEK tuaj yeem tiv taus kev sib txhuam thiab kev sib zog yam tsis poob nws qhov kev ncaj ncees. Cov polymer no tsis nkag mus rau xeb thiab nqus cov dej noo ntawm tus nqi tsawg kawg nkaus, yog li nws tuaj yeem kav ntev ntau xyoo yam tsis muaj kev puas tsuaj.

3. Muaj peev xwm ua haujlwm tau zoo - Cov kws kho hniav vam khom kev tsim qauv siv computer (CAD) thiab kev ua haujlwm tau zoo (CAM) ntau dua li yav dhau los, thiab PEEK zoo meej rau qhov ntawd. Ib qho tseem ceeb ntawm cov khoom siv kho hniav niaj hnub no yog qhov sib phim nrog tus neeg mob lub cev, thiab CAD / CAM yog qhov tsim nyog los tsim nws. Qhov no ua kom ntseeg tau tias lub cuab yeej yuav so kom xis nyob, ua haujlwm zoo tshaj plaws thiab siv tau ntev li ntev tau.

Yog tias PEEK raug tshuab raws li cov lus qhia ntawm cov chaw tsim khoom, nws yuav khaws nws cov khoom tom qab milling. Qhov kev ruaj khov ntxiv no ua rau muaj kev ywj pheej ntau dua thaum lub sijhawm tsim qauv thiab ua rau nws yooj yim dua rau cov kws kho hniav los nruab rau lawv cov neeg mob nrog cov khoom siv tshwj xeeb.

PEEK yooj yim sib xws nrog CAD/CAM txoj kev kuj txhais tau tias nws tuaj yeem ua tiav sai thiab sib xws. Hauv ntej, PEEK cov khoom siv tuaj yeem tsim tau zoo thiab sai.

4. Kev Yoog Tau - Cov polymer ua tau zoo no ruaj khov tab sis tsis tawv. Thaum tsis tau ntim, nws muab cov modulus zoo ib yam li pob txha cortical, ua rau PEEK yog cov khoom siv kho hniav muaj zog thiab yoog tau. Nrog nws qhov kev ywj pheej ntxiv, PEEK xav tias ntuj hauv qhov ncauj thiab tseem ywj pheej txawm tias tom qab ntau xyoo tom thiab zom. Cov khoom siv kho hniav yuav tsum tswj lawv cov duab thaum raug kev nyuaj siab tas li, thiab PEEK yog ib qho ntawm cov polymers zoo tshaj plaws rau qhov no.

5. Radiolucent - Lub modulus zoo li pob txha thiab radiolucency ntawm PEEK yog ob yam khoom uas thaum xub thawj nyiam cov kws tshawb fawb kho mob rau PEEK, thiab nws tseem yog ib qho ntawm cov khoom zoo tshaj plaws ntawm cov polymer. Nyob rau hauv xyoo tas los no, kev tshawb fawb txog PEEK hniav cog tau qhia tias cov khoom siv muaj peev xwm ntau hauv daim teb no.

Qhov radiolucency ntawm PEEK yog ib qho khoom muaj nqis thaum cov khoom siv no siv rau hauv txhua txoj kev cog hniav. Thaum cog rau hauv, cov polymer yuav tsis cuam tshuam rau X-ray, CT lossis MRI scans. Vim tias X-rays yog qhov tseem ceeb rau kev kuaj mob hniav, PEEK qhov opacity rau daim duab yuav ua kom cov kws kho hniav tuaj yeem ua lawv txoj haujlwm ntawm kev saib xyuas kev noj qab haus huv ntawm tus neeg mob. Qhov twg PEEK qhov radiolucency zoo dua yuav pom tias yog kev cuam tshuam, cov polymer tuaj yeem txhim kho nrog cov khoom ntxiv xws li barium sulfate los tsim qhov sib piv zoo dua.

6. Kev Zoo Nkauj - Ib yam li PEEK tuaj yeem tsim tau yooj yim rau hauv cov duab tshwj xeeb, nws tuaj yeem phim xim kom haum rau tus neeg mob. Qhov sib txawv, cov hlau feem ntau tsis yooj yim nkaum hauv qhov ncauj, uas yog qhov txhawj xeeb rau cov neeg mob.

PEEK yog ib yam khoom siv kho hniav uas yooj yim sib xyaw rau hauv qhov ncauj vim nws cov xim tuaj yeem hloov pauv thaum lub sijhawm ua. Txawm tias cov hniav cuav tag nrho tuaj yeem ua tau ntuj, kom ntseeg tau tias cov neeg mob tuaj yeem hais lus, luag nyav thiab noj mov nrog kev ntseeg siab.

7. Qhov saj tsis muaj qab - Lwm qhov teeb meem nrog cov cuab yeej hlau yog tias lawv muab cov saj hlau rau ntau tus neeg mob. Nws tsis yog teeb meem kev noj qab haus huv, tab sis nws yog qhov kev ntxhov siab tas li rau cov neeg mob uas tsis xav kom nco ntsoov tias lawv muaj cov hniav cuav lossis cov thav duab.

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Yog li, tsis txhob yig los sab laj nrog cov khoom siv PEEK los ntawm Bloomden cov khoom siv kho hniav.