I-Glass-Ceramics ku-Dentistry: Amaqiniso Abalulekile Ama-5 Ngezinto Zokwelapha Amazinyo Ze-Glass-Ceramic

Ngena cishe kunoma yimuphi umtholampilo wamazinyo wesimanje bese ubuza ukuthi imiqhele, ama-veneer kanye nama-inlays enziwe ngani “nge-porcelain”. Impendulo ayiyona i-porcelain yendabuko nhlobo. Ifana ne-ceramic: umndeni wezinto eziklanywe ukuze zibukeke njenge-enamel yemvelo, zibopha ngokwethembeka esakhiweni samazinyo, futhi zibunjwe ngokugaya nge-CAD/CAM ngemizuzu embalwa kunokuba zakhiwe ngesandla izinsuku eziningi.

Lo mhlahlandlela ungowesibili ochungechungeni lwethu lwezinto zamazinyo, ulandelaAmaqiniso Abalulekile Ama-5 Ngezinto Zokwelapha Amazinyo ze-PMMA. Ihlanganisa ukuthi yiziphi izinto ezenziwe ngengilazi, yiziphi izinhlobo ozohlangana nazo emsebenzini, ukuthi ziphumelela kuphi nokuthi aziphumeleli kuphi, kungani zibeka izidingo ezithile emishinini yokugaya, nokuthi ubuchwepheshe buya kuphi. Kungakhathaliseki ukuthi ungudokotela, umnikazi webhulebhu noma umsabalalisi ohlola ukuhamba komsebenzi kwedijithali, lawa amaphuzu okufanele uwaqonde.

Iqiniso 1: Ziyini Izinto Zobumba Ezingilazi — Futhi Kungani Zibalulekile Ezokwelapha Amazinyo

Incazelo kanye nesakhiwo

Ingilazi-ceramic yinto eyenziwe ngokwenziwa kwekristalu okulawulwayo kwengilazi. Umphumela uba isakhiwo sezigaba ezimbili: i-matrix efana nengilazi enamakristalu amahle asakazeke kuyo yonke indawo. Uhlobo, ubukhulu kanye nomthamo walawo makristalu kunquma kakhulu ukuthi izinto ziziphatha kanjani. Emikhiqizweni ye-lithium disilicate esetshenziswa kabanzi, isibonelo, isigaba sekristalu sakha cishe u-70% wezinto ngomthamo.

Lesi sakhiwo sichaza ukukhanga kwezinto ezibonakalayo. I-matrix efana nengilazi inikeza ukukhanya, indawo epholishayo kanye nekhono lokuqoshwa nokuhlanganiswa. Amakristalu aphazamisa indlela yokuqhekeka okukhula, okwenza izinto zibe nzima kunengilazi yodwa. Ama-ceramic engilazi yamazinyo aklanywe ngokuyisisekelo ukuze ahlale phakathi kobuhle bengilazi namandla e-ceramic.

Ingilazi-Izitsha Zobumba, I-Porcelain Yamazinyo kanye ne-Zirconia

La magama amathathu avame ukusetshenziswa ngokunganaki, ngakho-ke ukuqondiswa okusheshayo kuyasiza.

• I-porcelain yamazinyo(ngokwesiko i-feldspathic) iyinto ecebile ngengilazi enokuqukethwe okuphansi kwekristalu. Inobuhle kakhulu kodwa ibuthakathaka, yingakho yayibekwe phezu kwensimbi noma ama-core aqinile ngokomlando.
• Ingilazi-izitsha zobumbaaqukethe isigaba sekristalu esakhiwe ngamabomu, enikeza amandla aphezulu ngenkathi egcina i-matrix yengilazi eyenza ukubopha kanye nobuhle kube nokwenzeka.
• I-Zirconiaiyi-polycrystalline futhi ayinayo ingilazi. Yilokho okuwumthombo wamandla ayo aphezulu, futhi yingakho iphathwa futhi icutshungulwa ngendlela ehlukile.

Lokhu akulona izinga. Ama-glass-ceramics ngokuvamile abeka phambili ubuhle kanye nokubopha okunamathelayo, kuyilapho i-zirconia ibeka phambili amandla, futhi ngayinye iyisinqumo esifanele ezimweni ezahlukene zezokwelapha. I-Zirconia izohlanganiswa esiqondisweni esihlukile kulolu chungechunge.

Kungani I-Glass-Ceramics Isetshenziswa Kabanzi Kangaka?

Izimfanelo ezine zichaza indawo yazo ekwelashweni kwamazinyo okuvuselela kwanamuhla:

• Ubuhle:Ukukhanya kwazo kanye nobubanzi bomthunzi kuvumela ukulungiswa ukuthi kuhlangane ne-enamel yemvelo, yingakho ziyindlela yokuqala yokukhetha izindawo ezibonakalayo.
• Ukubopha okunamathelayo:Isigaba sengilazi singaqoshwa futhi sifakwe i-silan, okuvumela ukubopha kwe-micromechanical kanye ne-chemical kuma-resin cement. Lokhu kusekela amalungiselelo okulondoloza.
• Ukusebenziseka kalula:Ama-glass-ceramics anikezwa njengamabhulokhi aklanyelwe i-CAD/CAM, futhi angagaywa kahle kuze kube yimingcele emincane.
• Irekhodi lomtholampilo:Ama-glass-ceramics, kanye ne-lithium disilicate ikakhulukazi, asetshenziswe emtholampilo iminyaka eminingi futhi abhalwe kahle ezincwadini.

Iqiniso 2: Izinhlobo Eziyinhloko Zengilazi Yamazinyo-Izitsha Zobumba kanye Nalokho Okusetshenziselwa Yinye

Akuzona zonke izinto ezenziwe ngengilazi ezifana nazo. Uhlobo lwekristalu kanye nokuqukethwe kuyahluka, futhi kuhlukile ngamandla, ukukhanya kanye nezinkomba ezinconywayo.

Ingilazi ye-Feldspathic kanye ne-Leucite-Reinforced Glass-Ceramics

I-Feldspathic ceramics yizona ezikhanya kakhulu futhi ezibukeka kahle kakhulu eqenjini, kodwa futhi azinamandla kakhulu. I-leucite-reinforced glass-ceramics yengeza amakristalu e-leucite ukuthuthukisa amandla nokunciphisa ukusabalala kwemifantu. Zombili zivame ukukhethwa lapho ukubukeka kubaluleke kakhulu khona futhi imithwalo incane, njenge-veneers, i-inlays, i-onlays kanye neminye imiqhele yangaphambili.

I-Lithium Disilicate

I-lithium disilicate iyi-ceramic yengilazi yamazinyo eyaziwa kakhulu futhi yiyona abantu abaningi abayishoyo uma bethi “glass-ceramic.” Amakristalu ayo axhumene, afana nenaliti ayinika amandla aphezulu kakhulu kunezinto ezisekelwe ku-leucite ngenkathi igcina ubuhle obuhle. Isetshenziselwa imiqhele eyodwa, ama-inlays, ama-onlays nama-veneers, futhi ingenye yezinto ezivame ukugaywa emtholampilo we-CAD/CAM oseduze nesihlalo. Amabhulokhi e-ceramic e-lithium disilicate ajwayelekile eza ngezindlela ezahlukahlukene zokukhanya nemibala, ngakho udokotela angafanisa izinto nekesi.

I-Zirconia-Reinforced Lithium Silicate (ZLS)

Izinto ze-ZLS zincibilikisa i-zirconia ibe yi-matrix yengilazi (cishe i-10% ngesisindo kweminye imikhiqizo), kanye namakristalu e-lithium silicate. Inhloso isakhiwo sekristalu esihle esisekela amandla nokupholisha. I-ZLS isetshenziselwa izinkomba ezifanayo njenge-lithium disilicate: imiqhele, ama-inlays, ama-onlays nama-veneers.

Amabhulokhi Angaphambi Kokukristala vs. Agcwele Ikristali

Ngale kwe-chemistry, kukhona umehluko obaluleke kakhulu ekamelweni lokugaya.

• Amabhulokhi aqinisiwe ngaphambilizinikezwa zisesimweni esiphakathi nesithambile. Kulula futhi kuyashesha ukuzigaya futhi zithambile ngamathuluzi. Ngemva kokugaya, ukulungiswa kudlula ekushiseni kwe-crystallization esithandweni se-ceramic ukuze kufinyelele amandla aso okugcina, umbala kanye nokukhanya.
• Amabhulokhi acwebezelisiwe ngokugcwelesezivele zisezindaweni zazo zokugcina, ngakho-ke ukulungiswa kungapholishwa noma kufakwe i-glaze bese kulethwa ngaphandle kwesinyathelo sokudubula. Lokho kusindisa isikhathi emsebenzini wokuvakasha okukodwa, kodwa izinto ezilukhuni zidinga kakhulu amathuluzi kanye nomshini.

Akukho okunye okungcono emhlabeni wonke. Amabhlogo afakwe ikristalu ahweba ngesinyathelo sesithando somlilo ukuze kube lula ukugaya; amabhlogo afakwe ikristalu ngokugcwele ahweba ngokugaya okunzima ukuze kube nomsebenzi omfushane.

Lapho Ama-Resin-Ceramic Hybrids Efaneleka Khona

Uzovame ukubona amabhlogo e-resin-ceramic noma ama-hybrid athengiswa eceleni kwama-glass-ceramic. Lawa akuzona ama-glass-ceramic: ahlanganisa i-ceramic filler ne-polymer matrix, enikeza izinto eziguquguqukayo, ezibamba ukushaqeka okulula ukuzigaya nokuzilungisa. Zihlala ohlelweni olufanayo lwe-CAD/CAM, futhi zabelana ngezinye zezakhiwo okuxoxwe ngazo encwadini yethu.Umhlahlandlela wezinto zamazinyo ze-PMMA.

Uhlobo Lokufaniswa Nesibonisi

*Ububanzi obubonisa kuphela. Amanani ayahlukahluka kuye ngomkhiqizi nangendlela yokuhlola, ngakho-ke hlola njalo imibhalo yomkhiqizo othize.

Ngokuqondene nezindawo zokufaka kanye nezindawo zokufaka, izinto zobumba zeglasi ziyizinto ezikhethwayo, njengoba kuchaziwe esihlokweni sethu mayelanaizingqimba zobumba zosuku olufanayo ezinezihlalo ze-CAD/CAM.

Iqiniso 3: Izinzuzo Eziyinhloko kanye Nemikhawulo Yengilazi-Izitsha Zobumba

Ubuhle kanye Nokubopha Okunamathelayo

Amandla amabili amakhulu engilazi-ceramics axhunyiwe. Ngenxa yokuthi isigaba sengilazi singaqoshwa, ukuvuselelwa kungahlanganiswa ngokunamathelayo ku-enamel kanye ne-dentin. Lokhu kusekela imiklamo yokulungiselela okuncane egcina isakhiwo samazinyo semvelo, futhi ukuvuselelwa okuhlanganisiwe kusiza ukusabalalisa umthwalo ezinyoni. Kuhlanganiswe nokucwebezela kwawo, yingakho ingilazi-ceramics zihlotshaniswa kakhulu nodokotela wamazinyo olondolozayo nobuhle.

Izidingo Zamandla, Ubulukhuni Nokujiya

Ama-glass-ceramics ayaphuka. Njengazo zonke izinto zobumba, awaguquki ngaphambi kokuba ahluleke, ngakho-ke iphutha elincane lingaba yindawo yokuqala yokuphuka. Uma kuqhathaniswa ne-zirconia anamandla aphansi, yingakho abakhiqizi becacisa ubukhulu obuncane besibonakaliso ngasinye nokuthi kungani ngokuvamile kungesona inketho yokuqala yokulungiswa kwesikhathi eside noma okulayishwe kakhulu. Ukulandela iziqondiso zokulungiselela nobukhulu bezinto ezithile akuyona into yokuzikhethela.

Ingxenye Elula Ukungayinaki: Ukuzwela Kwenqubo

Ngenxa yokuthi ingilazi-ze-ceramics ziyaphuka, ikhwalithi yokulungiswa okuqediwe incike ekutheni kwenziwe kanjani ngomshini kanye nokuthi kukhethwe yiphi ibhloko. Ukuqhekeka okuncane noma ukuqhekeka emaphethelweni, okwethulwa ngesikhathi sokugaya, kungaba amaphuzu abuthakathaka kamuva. Ngakho-ke ukulungiswa okubili okusikwe kusuka kubhloko efanayo kungenza ngendlela ehlukile uma kukhiqizwe ngaphansi kwezimo ezahlukene. Leli yibhuloho eliya eqinisweni elilandelayo.

Iqiniso 4: Kungani Ukugaya Ingilazi-Izitsha Zobumba Kudinga Okuningi Kumshini

Ukugaya yilapho izakhiwo zezinto ezichazwe ngenhla zihlangana khona nomhlaba wangempela. Ingilazi nezinto zobumba ziqinile kodwa ziyaphuka, okuyinhlanganisela enzima yomshini.

Kungani Ukugaya Okumanzi Kuyindinganiso

Ama-glass-ceramics agaywa ngamathuluzi ambozwe ngedayimane, futhi acutshungulwa emanzi. Ukugeleza okuqhubekayo kwe-coolant kwenza imisebenzi emithathu: kususa ukushisa, ukuze izinto zingacindezelwa ngokushisa emphethweni wakamuva; kukhipha udoti, ukuze ithuluzi lingavimbeki; futhi kunciphisa ingozi yokuqhekeka nokuqhekeka okuncane emaphethelweni amancane. Ukugaya okomile ngokuvamile kugcinelwe ezinye izinto, yingakho imishini yokugaya emanzi ibhekwa njengesigaba esihlukile.

Yini Ethinta Ikhwalithi Yemingcele Ngempela

Izici eziningana zomshini zinquma ukuthi ukulungiswa kwengilazi-ceramic kuphuma kuhlanzekile yini:

• Isivinini sokujikijela kanye nokuqina:I-spindle esebenza kahle ngaphandle kokuphelelwa yisikhathi okuningi ifaka ukudlidliza okuncane ezintweni eziqhekekayo.
• Isimo sethuluzi:Amathuluzi edayimane agugile anqunywa kancane futhi acindezela kakhulu indwangu. Ukuguga kwamathuluzi kudinga ukugadwa, futhi amathuluzi ashintshwe ngesikhathi.
• Ukulinganisa nokulungisa ukunemba:Ukulungiswa kuvame ukugaywa ngezigaba, futhi ithuluzi kumele libuyele endaweni efanayo. Amaphutha amancane avela ngqo njengezikhala zemingcele.
• Ukuphathwa kwe-coolant:Ukugeleza kokupholisa okuhlanzekile nokungaguquguquki kanye nokuhlunga kugcina ukusika kuzinzile phezu kwamayunithi amaningi.
• Isu lendlela yamathuluzi:Amasu okulungisa nokuqeda esofthiwe ye-CAM abaluleke kakhulu njengehadiwe.

Amabhlogo acwebezelisiwe aphakamisa izithiyo kuzo zonke lezi zinto, njengoba izinto eziqinile zigqoka amathuluzi ngokushesha futhi zishiya isikhala esincane sokwenza amaphutha.

Ukuhamba Komsebenzi Oseceleni Kwesihlalo kanye Nokusebenza Kwamalebhu Amancane Kunezinto Eziza Kuqala Ezingafani

Ekuzijwayezeni okuseceleni kwesihlalo, okubaluleke kakhulu isivinini kanye nobulula: iyunithi eyodwa kufanele ilungele ngenkathi isiguli silindile, ngokungenelela okuncane komqhubi. Elabhorethri encane, okubaluleke kakhulu ikhwalithi ehambisanayo kumayunithi amaningi, ngokuphila kwamathuluzi okubikezelwa. Umshini wokugaya omanzi omncane udinga ukukhonza kokubili, okusho ukuthi ukuzenzekela (njengokushintsha amathuluzi okuzenzakalelayo kanye nokulinganisa) kubaluleke kakhulu njengokusebenza okuluhlaza.

Isibonelo: Ukuthi Lezi Zimfuneko Zibukeka Kanjani Emsebenzini

Njengomfanekiso,Umshini wokugaya weglasi we-DN-W4Z PROiyisigayo esincane esimanzi esakhelwe lolu hlobo lomsebenzi. Imininingwane yaso ihambisana ngqo nezici ezingenhla:

• Ukusika okumanzi, ngesivinini se-spindle esingu-10,000–60,000 RPM
• Ukunemba kokuthutha kwe-±0.01 mm
• Umtapo wamathuluzi osuswayo onezindawo ezintathu wokushintsha amathuluzi okuzenzakalelayo
• Isikhathi esijwayelekile sokugaya imizuzu eyi-15-26 ngeyunithi ngayinye
• Usayizi wonyawo ongu-485 × 365 × 325 mm kanye nesisindo esingu-40 kg, ofanelana nebhentshi lasemtholampilo
• Ukuhambisana ne-glass ceramics, i-lithium disilicate, izinto ezihlanganisiwe, i-PMMA kanye nezinduku ze-titanium

Ububanzi bayo buphinde bubonise iphuzu elibanzi: ipulatifomu eyodwa encane emanzi ingamboza ukulungiswa kwengilazi-ceramic kanye nomsebenzi we-composite kanye ne-PMMA. I-Zirconia ilandela umsebenzi wokugaya ohlukile futhi imbozwa ngokwehlukana.

Uhlu Lokuhlola Olusebenzayo Lokugaya Ngengilazi

Uma uhlola noma yikuphi ukusethwa kokugaya okumanzi kwengilazi-ze-ceramics, kuyasiza ukubuza:

• Ingabe umshini wenzelwe ukugaya ngamanzi, onesistimu yokupholisa ehlanganisiwe nehlungiwe?
• Iyini ibanga lesivinini se-spindle kanye nokuqina kwayo ngesivinini esiphezulu?
• Kuyini ukunemba kokushintsha indawo okushiwo, futhi ingabe umshini ulinganisa ngokuzenzakalelayo?
• Ingabe amathuluzi angashintshwa ngokuzenzakalelayo, futhi kusingathwa kanjani ukuguguleka nokushintshwa kwamathuluzi?
• Yimaphi amabhlogo nosayizi wamabhlogo asekelwayo, kufaka phakathi izinhlobo ezifakwe ikristalu kanye nezinhlobo ezifakwe ikristalu ngokugcwele?
• Ingabe isofthiwe ye-CAM inikeza amapharamitha aqondene nezinto ezithile?

Iqiniso 5: Izitayela Zesikhathi Esizayo Zokwelapha Amazinyo Ngengilazi

Izinto ezenziwe ngengilazi zinomlando omude wezokwelapha, kodwa lo mkhakha usaqhubeka.

Izinto Ezisetshenziswayo: Eziqinile, Ezikhanyayo Kakhulu, Ezilula Ukuziqeda

Abakhiqizi bayaqhubeka nokusebenza ezintweni ezihlanganisa amandla aphezulu nokukhanya kwemvelo, ukuze izinkomba ezengeziwe, okuhlanganisa nokulungiswa kwangemuva, ziphathwe ngento eyodwa. Kukhona futhi ukuthambekela ezintweni ezidinga ukucutshungulwa okuncane ngemuva, njengokwakheka kwekristalu okusheshayo noma okulula, kanye nezinketho ezenziwe ngekristalu ngokugcwele ezingalethwa ngaphandle kwesinyathelo sokudubula.

Imishini: Ukunemba Okuncane

Izigayo ezimanzi ezincane ziya ngokuya zisebenza kahle. Izici ezazihlotshaniswa nemishini emikhulu yelebhu, njengokushintsha amathuluzi okuzenzakalelayo, ukulinganisa okuzenzakalelayo kanye nokulawula isikrini sokuthinta, zitholakala kakhulu kumayunithi angangesihlalo. Njengoba izinto ziba nzima, ukugcizelelwa kwekhwalithi yesipinashi, ukulinganisa kanye nokuphathwa kwamathuluzi cishe kuzokhula.

Ukuhamba Komsebenzi: Kusukela Ekuskeni Kuya Ekulethweni Ngokuvakashelwa Okukodwa

Indlela okuhanjwa ngayo iwumsebenzi oqinile wokuvakasha okukodwa: ukuskena kwangaphakathi komlomo, ukwakheka okusizwa yi-AI, ukugaya okusheshayo nokuqeda, kanye nokubopha ngosuku olufanayo. Uhlangothi lwezokwelapha lwalolu hlelo lokusebenza luhlolwa kumhlahlandlela wethu we-izingqimba ze-ceramic zosuku olufanayo.

Isiphetho

Ama-glass-ceramics ahlanganisa ubuhle, ukubopha okunamathelayo kanye nokuhambisana kwe-CAD/CAM, yingakho eseyizinto eziyinhloko kudokotela wamazinyo wesimanje ovuselelayo. Ukuqonda izinhlobo, kusukela ku-feldspathic kuya ku-lithium disilicate kuya ku-ZLS, kanye nomehluko phakathi kwamabhulokhi angaphambi kwekristalu kanye nama-crystallized ngokugcwele, kusiza ekukhetheni izinto ezifanele zecala ngalinye.

Okubalulekile ukuthi izinto zokwakha kanye nomshini zisebenza ndawonye. Ama-glass-ceramics ayaphuka, ngakho-ke ikhwalithi yawo yokugcina incike ezimweni zokugaya kanye nasebhulokini. Ukusetha ukugaya okumanzi okufanelekile kuyingxenye yokuthola imiphumela ethembekile, hhayi okunye okungakhethwa.

Uma ungathanda ukubona ukuthi umshini wokugaya omanzi omncane we-glass-ceramics ubukeka kanjani, ungafunda nge-DN-W4Z PRO.

imibuzo ejwayelekile ukubuzwa

Ingabe i-lithium disilicate iyingilazi-ceramic?

Yebo. I-lithium disilicate ingenye yama-ceramics engilazi yamazinyo asetshenziswa kakhulu. Iqukethe amakristalu e-lithium disilicate ngaphakathi kwe-matrix yengilazi.

Uyini umehluko phakathi kwengilazi-ceramic kanye ne-porcelain?

I-porcelain yamazinyo yendabuko igcwele ingilazi enokuqukethwe okuphansi kwekristalu. Ama-glass-ceramics enziwe ngokuqukethwe okuphansi kwekristalu okulawulwayo, okuwanikeza amandla amakhulu ngenkathi egcina ubuhle nekhono lokubopha lengilazi.

Uyini umehluko phakathi kwamabhulokhi engilazi-ceramic afakwe ikristali kanye namabhulokhi engilazi-ceramic afakwe ikristali ngokugcwele?

Amabhlogo afakwe ikristalu athambile futhi kulula ukuwagaya, kodwa adinga ukujikijelwa ngekristalu ngemva kokugaya. Amabhlogo afakwe ikristalu ngokuphelele asevele esezicini zawo zokugcina futhi angaqedwa ngaphandle kokugaya, kodwa anzima kakhulu kumathuluzi nasemshinini.

Ingabe ingilazi-ze-ceramic zingagaywa eceleni kwesihlalo?

Yebo. Amabhlogo engilazi-ceramic aklanyelwe i-CAD/CAM, futhi imishini yokugaya emanzi ehlanganisiwe yenza kube nokwenzeka ukulungisa izinto ezifika kanye njengendlela yokufakwa kwe-inlays, ama-onlays, ama-veneer kanye nama-crown endaweni yomtholampilo.