Plooj Cawv Fused rau Zirconia crowns thiab choj
Sep 28, 2018| 
Plooj (veneers) fused rau zirconia crowns thiab choj: ib txoj kev xaiv niaj hnub rau PFM
Niaj hnub no txoj kev kho hniav tshiab tshiab, plooj (pfz) crowns thiab txuas ntxiv hloov cov khoom siv hauv digital (pfm)
Vim li cas thiaj xaiv cov plooj (porcelain fused rau zirconia?
1. high-zog zirmonia core: txhim khu kev qha txhawb rau cov khoom lag luam hluav taws xob zoo nkauj
Pfz Txiaj Ntsig Feature Ib Tug Tub Ntxhais ua los ntawm Y-TZP Zirconia (Yttria-ruaj khov tetragonal zirconia (ISO 6872 Txuj Ci) {5}.
Qhov no yog siab dua li ntawm cov tsoos hlau subtructures (800-1000 MPA) thiab vastrly muaj zog tshaj li cov pob (80-120 mpa) {4}
➡️ Cov Phiaj Xwm Hauv Chaw Kho Mob: Tsim nyog rau kev txhawb nqa ntev ntev, thiab kho kom zoo nkauj nrog cov kev pheej hmoo siab - txo kev pheej hmoo ntawm kev pheej hmoo.
Advantage Zoo tshaj plaws: cov kev hloov pauv ua kom zoo dua: Qhov chaw ua kom tawv nqaij ua rau muaj kev ntxhov siab rau kev ntxhov siab kom tsis txhob muaj kev sib tw tawg.
2. zoo dua esteshetics: ntuj translucency muab piv rau cov hniav tiag
Nrog plooj (veneersain
Raws liPhau ntawv Journal ntawm cov tswv lag luam, Pfz rov qab ua tiav 28% -35% lub teeb transmittion, piv rau tsawg dua 10% hauv 30% -40% {5}.
{{03. tsawg kawg ntawm kev sib tsoo thiab muaj zog post-sib tsoo los
Kev tsis zoo li PFM cov ntoo, lub siab-zog zirconia core hauv Pfz rov qab muaj cov qauv txhawb pab ntxiv, txo cov plooj (porcelax chapping.
Tsis tas li ntawd, lub veneered nto tuaj yeem raug xa tawm lossis kho hauv zos, txuas lub neej ntawm kev rov kho dua .
➡️ Repolishing Performance: After intraoral grinding and polishing paste application, surface roughness can be restored to Ra<=0.2μm, minimizing wear on opposing dentition.
{5-} kev kawm ua ke xyoo (Thoob Ntiaj Teb Journal ntawm Insthhodontics) qhia a<3% fracture rate in PFZ restorations, lower than the 6%–9% typical for PFM.
4. Digital Workflow Sib Tw: Siab Npaum Li Cas Hauv Ntau Lawm
Pfz Rov qab tau tshaj tawm nrog digital cad / cam workflows, suav nrog {{} ax axis milling tshuab, txhawb nqa huab thiab txheej txheem.
➡️ Marginal precision: Tom qab milling nrog 0.5mm cov cuab yeej, lub marginal sib txawv tuaj yeem tswj tau hauv<50μm, meeting high-precision bonding requirements.
➡️ Cov Flowized Flow: Qauv Zirconia discs ua ke nrog rau kev siv lub sijhawm xa khoom me me los ntawm 2-3 hnub, nce ntau zog.
Cov Khoom Qhia Txog Cov: Los ntawm Anterior Esthetics rau posterior ua haujlwm
| Daim ntawv thov | Pfz kom zoo dua |
|---|---|
| Anterior ib crowns | Areatoror esthetics thiab transcency |
| Posterior crowns | High-zog zirconia core, ruaj khov porcelain |
| 3-}} Cov choj txuas hniav | ✅ withstands highclocal zog |
| Kev cog lus ua haujlwm | ✅ precision haum rau cov abutments, ntuj-saib veneer |
📦 Peb Zirmonia kev nthuav dav tshwj xeeb (rau cov koom tes wholesale)
| Yam | Kev qhia tshwj xeeb |
|---|---|
| Zirconia Purity | Ntau dua los yog sib npaug rau 95% y-tzp |
| Lub zog flexural | 1200-1400 MPA |
| Sintering shrinkage | 20-23% (optimized rau digital pre-nqis) |
| Kev sib haum xeeb | 98mm discs tau tshaj zirkonzahn, ag, etc . |
| Nto Kho Mob | Sandblasting / Glazing / Polishing Tau Tshaj |
✅ Rau cov neeg siv khoom muaj lub zog siab, cov haujlwm qub, plooj (venceleain