Lub Toughening Thiab Strengthening Methods Ntawm Hniav Ceramics Thiab Lawv Daim Ntawv Thov

Cov ntaub ntawv kho hniav ceramic muaj cov biocompatibility zoo, hnav tsis kam, thiab corrosion kuj, thiab lawv cov khoom zoo nkauj tshwj xeeb tsis zoo rau cov ntaub ntawv hlau, cov ntaub ntawv polymer, thiab lwm yam ntaub ntawv. Cov khoom siv kho vaj tse ua los ntawm cov ceramics yog qhov muag heev, muaj kev nyab xeeb thiab tsis muaj tshuaj lom, nrog lub ntsej muag du thiab hnav-tiv taus, thiab cov kab mob plaque tsis yooj yim txuas. Cov ntaub ntawv ceramic yog dav siv los ua cov ntaub ntawv kho hniav thiab siv dav los ntawm cov neeg mob thiab kws kho hniav. Txawm li cas los xij, lub hauv paus brittleness thiab tsis tshua muaj zog ntawm cov ntaub ntawv ceramic lawv tus kheej txwv lawv cov ntawv thov ntxiv hauv kev kho hniav. Nws tsis yog txog thaum xyoo 1950 thaum cov plooj (porcelain) uas tuaj yeem ua rau cov khoom siv hlau yog tsim los ntawm kev siv cov ntaub ntawv ceramic hauv kev kho hniav. Hniav ceramic alloys (DCA) yog siv los ua cov hlau substrate rau cov plooj (porcelain fused to metal restorations) (PFM), muaj zog thiab kav ntev. Nyob rau tib lub sijhawm, cov porcelain txheej fused ntawm cov hlau substrate yog corrosion-resistant thiab muaj xim zoo nkauj, thiab kev sib xyaw ua ke ntawm ob ua rau tag nrho cov kev kho kom zoo nkauj thiab ruaj khov. Yog li ntawd, PFM tau siv dav hauv cov tebchaws tsim. Hauv daim ntawv thov kev kho mob tom ntej, nws tau pom tias kuj tseem muaj qee qhov tsis txaus ntawm cov hlau ceramic rov qab, xws li kev sib raug zoo ntawm cov plooj (porcelain) thiab txheej hlau uas ua rau cov plooj (porcelain fracture), thiab cov tsos ntawm cov xim tsis zoo ntawm cov hlau puag ntawm cov hlau. ntug ntawm lub restoration. Txhawm rau them nyiaj rau qhov tsis txaus ntawm PFM, tib neeg tau pib tsom mus rau kev tshawb fawb ntawm tag nrho cov khoom siv ceramic, tab sis tam sim no tag nrho cov ntaub ntawv ceramic feem ntau muaj qhov tsis muaj zog txaus xws li siab brittleness thiab tsis muaj zog. Yog li ntawd, cov neeg ua hauj lwm cov ntaub ntawv tau ua ib tug loj npaum li cas ntawm cov ntaub ntawv uas muaj feem xyuam rau kev tshawb fawb thiab sim txhim kho toughness thiab lub zog ntawm cov ntaub ntawv ceramic, vam tias yuav txhim kho lawv lub zog thiab toughness, kom lawv muaj peev xwm tswj tau superior biocompatibility thiab zoo nkauj zog, raws li zoo raws li cov kev kho mob. rau cov khoom siv kho hniav ntawm kev kho hniav. Muaj ntau txoj hauv kev rau kev ua kom tawv nqaij thiab ntxiv dag zog rau cov khoom siv ceramic, thiab ob peb lub zog tawv thiab ntxiv dag zog rau cov hniav ceramics tau siv rau hauv kev xyaum raws li lawv lub hauv paus theoretical.