I-PEEK ye-Bloomden-yezinye isinyithi esingenazo kwi-teknoloji yamazinyo

Ukwaziswa kwePolyetheretherketone (PEEK)

I-Polyetheretherketone (PEEK) yimathiriyeli yokwenziwa kombala wezinyo esele isetyenziswe njenge-biomaterial kwi-orthopedics iminyaka emininzi. Ngowe-1978, yaveliswa liqela lezazinzulu zaseBritani. Kamva i-PEEK yathengiswa kwizicelo zemizi-mveliso. Ngasekupheleni kwee-1990s, i-PEEK yayingumgqatswa obalulekileyo osebenza kakuhle we-thermoplastic ukuba athathe indawo yamacandelo okufakelwa kwentsimbi.

izicelo

• PEEK izithsaba

Ukufakwa nge-asidi yesulfuric kudala indawo erhabaxa eguqulwe ngokwekhemikhali evumela ukuba idibane ngokufanelekileyo kunye ne-hydrophobic resin composite. Kwaphawulwa ukuba ukomelela kwebhondi yokucheba kwiresin edibeneyo yesamente yayiphezulu njenge-15.3 7.2 MPa emva kokugcinwa emanzini kwi-3780 C ye-60-90 s kunye ne-sulfuric acid etching. I-Etching nge-Piranha Acid kunye nokuSebenzisa i-Adhesive Reagents ibonakaliswe ukuvelisa amandla e-resin tensile bond aphezulu njenge-23.4 +/-9.9MPa kwimizekelo ye-PEEK endala. Kwakungekho mahluko ubalulekileyo kumandla e-tensile bond phakathi kwezithsaba ze-PEEK kunye ne-dentin abutments usebenzisa i-air abrasion kunye ne-sulfuric acid etching techniques. Olu phononongo lubonisa ukuba i-PEEK ingasetyenziswa njengesixhobo se-capping phantsi kwee-resin composite.

• I-PEEK Abutment

Ukuqwalasela i-biocompatibility eyaneleyo, i-implant abutments yokuphilisa inokwakhiwa kusetyenziswa i-PEEK. I-Bone resorption kunye ne-soft tissue inflammation ayizange ihluke kakhulu phakathi kwe-PEEK kunye ne-titanium abutments. Ukongezelela, i-microflora yomlomo efakwe kwi-PEEK abutments yayifaniswa ne-abutments eyenziwe nge-titanium, i-zirconia, kunye ne-polymethyl methacrylate. Ukudibanisa okusondeleyo kwe-elastic modulus yethambo kwindawo ye-PEEK kunciphisa umphumo wokukhusela uxinzelelo kunye nokukhuthaza ukulungiswa kwamathambo. Ke ngoko, i-PEEK inokungqina ukuba yeyona ndlela isebenzayo kwi-titanium kulwakhiwo lwezixhobo zokufakelwa.

• I-PEEK kwiiProstheses ezisuswayo

Amazinyo okufakelwa emveli asuswayo (RDPs) aneefreyimu ze-chrome-cobalt kunye ne-clasps avele njengokhetho lonyango olungabizi kakhulu noluqikelelweyo lokubuyisela kwisimo sangaphambili izigulane ezibuthathaka. Umboniso ongamkelekanga ngobuhle weentsimbi zentsimbi, ubunzima obonyukileyo beprothesis, ukubakho kwencasa yentsimbi, kunye nokungaguquguquki kwezinto eziguquguqukayo kwisinyithi kukhokelele ekwazisweni kwezixhobo ezininzi ze-thermoplastic, ezifana nenayiloni kunye ne-acetal resins, kwiklinikhi. Kwiminyaka embalwa edlulileyo, enye iprosthetic material (PEEK) isetyenziswe ngempumelelo kwicandelo lezonyango, ngakumbi kwi-orthopaedics. Izinto eziguquliweyo ze-PEEK kunye ne-20% ye-ceramic filler yi-polymer ephezulu yokusebenza kunye ne-biocompatibility ephezulu, iimpawu ezilungileyo zomatshini, ukumelana nokushisa okuphezulu kunye nokuzinza kweekhemikhali. Ndiyabulela kwimodyuli ye-elastic ye-4 GPa, i-elastic njengethambo, inciphisa uxinzelelo oludluliselwa kwi-abutment. Ukongeza, umbala omhlophe wesakhelo se-PEEK unikezela ngendlela eyahlukileyo yobuhle kunemiboniso yesakhelo sentsimbi. Ezinye iingenelo zolu lwazi lwepolymer kukuphelisa ukuchasana nokwaliwa kunye nencasa yentsimbi, umgangatho wokupolisha ophakamileyo, ukudityaniswa kweplaque ephantsi kunye nokuxhathisa okulungileyo kwe-abrasion.

• PEEK iingcingo orthodontic

I-PEEK ingasetyenziswa njengocingo lwe-aesthetic orthodontic. Xa kuthelekiswa nezinye iipolymers, ezifana ne-polyvinylsulfone (PES) kunye ne-polyvinylidene fluoride (PVDF), i-PEEK iingcingo ze-orthodontic zinika amandla aphezulu amathambo. Amandla afanayo e-orthodontic afunyenwe xa kuthelekiswa ne-titanium-molybdenum kunye neengcingo ze-nickel-titanium.

• Ukufakelwa kwePEEK

Ngeminyaka yoo-1960, ukufakelwa kwamazinyo kwi-intraosseous kwakusenziwa ubukhulu becala ngentsimbi esulungekileyo ye-titanium kunye ne-titanium alloys. Nangona i-titanium implants ixhaswa bubuninzi bovavanyo kunye nobungqina bophando lweklinikhi, kusekho iingxaki ekusebenziseni kwabo kwezonyango. Enye yezo mvakalelo ezinokubakho ze-titanium. Okwesibini, xa kuthelekiswa nezicubu zamathambo omntu, i-elastic modulus ye-titanium iphezulu kakhulu, ethanda ukulungiswa ngokutsha okanye ukulahleka kwezicubu zethambo. Okwesithathu, i-metal implants ayinayo ukuhanjiswa kokukhanya, okuchaphazela ukubonakala.

Kwi-1998, inkampani yaseBrithani i-Invibio yasungula i-PEEK implants. Ngokufika kokufakelwa kwe-PEEK yorhwebo, uphando oluhambelanayo luye lwanda ngokuthe ngcembe. I-PEEK kunye nezixhobo zayo ezilungisiweyo zineempawu ezintle. Abanye abaphengululi bakholelwa ukuba ukufakelwa kwe-PEEK kunokunqanda ukwenzeka kweziphumo zokukhusela uxinzelelo, kwaye kunokuthatha indawo yokufakelwa kwentsimbi kuqhaqho lweplastiki, utyando lokwenzakala kunye nezinye iinkalo.

eziluncedo

1. I-Biocompatibility - I-biocompatibility ye-PEEK ibonakaliswe, kunye nezifundo ezininzi eziqinisekisa ukungabi nabutyhefu. Nasemva kokusetyenziswa kumawakawaka ezigulana, i-PEEK ihlala ilolona khetho lufanelekileyo xa kuthelekiswa neentsimbi, ezinokubangela ukuguquguquka komzimba ukuya kuthi ga kwi-15% yabemi.

Amacandelo e-PEEK asetyenziswa kwi-spinal implants, izixhobo zokulungiswa kwe-trauma, ukutshintshwa kwe-hip kunye namadolo, kunye nezinye izixhobo zonyango. Kwimeko nayiphi na into, akukho mbuzo malunga nokhuseleko lwe-PEEK emzimbeni.

2. Iimpawu zeMechanical - I-PEEK inomlinganiselo obalaseleyo wamandla-to-weight, obaluleke kakhulu kukufakelwa kwamazinyo kunye nezixhobo. Xa kuthelekiswa nentsimbi, i-PEEK ilula kwaye ikhululekile ngakumbi kwisigulane. Le ntuthuzelo yongeziweyo nayo ayibeki esichengeni ukuqina, njengoko i-PEEK inokumelana namandla abrasive kunye noxinzelelo ngaphandle kokuphulukana nesidima sayo. Le polima ayinakukwazi ukubola kwaye ifunxa ukufuma ngesantya esincinci, ngoko inokuhlala iminyaka ngaphandle kokuthotywa kokusebenza.

3. Ubuchule bokuMachining-Oogqirha bamazinyo baxhomekeke kuyilo oluncediswa yikhompyuter (CAD) kunye ne-machining (CAM) ngakumbi kunanini na ngaphambili, kwaye i-PEEK igqibelele oko. Olona phawu lubalulekileyo lwezixhobo zamazinyo zanamhlanje luhambelana ngqo nokwakheka kwesigulana, kwaye iCAD/CAM iyimfuneko ukuyidala. Oku kuqinisekisa ukuba isixhobo siya kuphumla ngokukhululekileyo, sisebenze ngokufanelekileyo kwaye sisetyenziswe ixesha elide kangangoko kunokwenzeka.

Ukuba i-PEEK yenziwe ngokweenkcukacha zomenzi, iya kugcina iipropati zayo emva kokusila. Uzinzo olongezelelweyo luvumela ukuguquguquka okukhulu ngexesha lesigaba soyilo kwaye kwenza kube lula ukuba oogqirha bamazinyo baxhobise izigulane zabo ngezixhobo zesiko.

Ukuhambelana lula kwe-PEEK kunye neendlela ze-CAD/CAM zikwathetha ukuba inokuqwalaselwa ngokukhawuleza kwaye ngokuqhubekayo. Ngamafutshane, izixhobo zePEEK zinokuveliswa ngokuthembekileyo kwaye ngokukhawuleza.

4. Ukuguquguquka - Le polymer yokusebenza ephezulu yomelele kodwa ayiqinanga. Xa ingagcwaliswanga, inika imodyuli efana nethambo le-cortical, okwenza i-PEEK ibe yinto eyomeleleyo, eguquguqukayo yamazinyo. Ngokuguquguquka okungaphezulu, i-PEEK ivakala iyindalo emlonyeni kwaye ihlala ithambile nasemva kweminyaka iluma kwaye ihlafuna. Izixhobo zamazinyo kufuneka zigcine imilo yazo ngelixa ziphantsi koxinzelelo oluqhubekayo, kwaye i-PEEK yenye yezona zipolima zibalaseleyo kule nto.

5. I-Radiolucent - I-modulus efana nethambo kunye ne-radiolucency ye-PEEK zizinto ezimbini eziye zatsala ingqalelo yabaphandi bezonyango kwi-PEEK, kwaye ihlala enye yezinto ezibalaseleyo zepolymer. Kwiminyaka yakutshanje, uphando malunga nokufakelwa kwamazinyo e-PEEK lubonise ukuba izinto eziphathekayo zinamandla amakhulu kule ndawo.

I-radiolucency ye-PEEK yipropati exabisekileyo xa izinto zisetyenziswa kuyo nayiphi na inkqubo yokufakelwa. Emva kokuba ifakwe, i-polymer ayiyi kuphazamisa ngokubonakalayo i-X-ray, i-CT okanye i-MRI scans. Kuba iiX-reyi zibalulekile kuxilongo lwamazinyo, ukungafihli kwe-PEEK emfanekisweni kuya kuqinisekisa ukuba oogqirha bamazinyo banokwenza umsebenzi wabo wokubeka iliso kwimpilo yesigulana. Apho i-radiolucency ephezulu ye-PEEK inokubonwa njengesithintelo, i-polymer inokongezwa ngezinto zongezwa ezifana ne-barium sulfate ukudala umahluko ongcono.

6. I-Aesthetics - Njengokuba i-PEEK inokuveliswa ngokulula kwiimilo eziqhelekileyo, inokuba nombala ohambelana ngokuchanekileyo nesigulane. Ngokwahlukileyo, isinyithi sihlala singenakwenzeka ukufihla emlonyeni, nto leyo exhalabisa izigulane.

I-PEEK yinto yamazinyo edibanisa lula emlonyeni ngenxa yokuba umbala wayo unokuguqulwa ngexesha lokucubungula. Kwanamazinyo amazinyo apheleleyo anokwenziwa ngokwemvelo, ukuqinisekisa ukuba izigulana ziyakwazi ukuthetha, ukuncuma kunye nokutya ngokuzithemba.

7. Incasa engathathi hlangothi - Enye ingxaki ngezixhobo zetsimbi kukuba zinika incasa yentsimbi kwizigulane ezininzi. Ayingomcimbi wezempilo, kodwa kukukhathazeka rhoqo kwizigulana ezingafuni ukukhunjuzwa ukuba zinamazinyo okufakelwa okanye iifreyimu.

isiphelo

Ke, ungalibazisi ukudibana nezixhobo ze-PEEK ezivela kumthengisi wezinto zamazinyo eBloomden.