Tag nrho cov hlau yas (FMC) yog kev kho hniav kho hniav uas npog tag nrho cov hniav puas los yog tsis muaj zog, crafted nkaus los ntawm biocompatible hniav alloys. Nws sawv tawm rau qhov tshwj xeeb ruaj khov, ua rau nws zoo tagnrho rau cov hniav tom qab (molars/pre-molars) uas ua rau siab zom zom zom.
Cov ntaub ntawv muaj xws li cobalt-chromium (hypoallergenic, corrosion-resistant), npib tsib xee-chromium (tus nqi- siv tau, hnav), thiab kub alloys (biocompatible, malleable-txawm tias tsis tshua muaj niaj hnub no vim tus nqi). Cov alloys no muaj lub zog tensile siab, tiv taus tawg thiab hnav txawm tias siv sijhawm ntev -.
Clinically, FMCs raug pom zoo rau cov hniav uas muaj kev puas tsuaj loj, txhaws loj, kho hauv paus kwj dej, lossis kev puas tsuaj. Cov txheej txheem kev tso kawm suav nrog kev npaj cov hniav (shaping tus hniav kom haum rau lub kaus mom), kev xav, thiab kev tso chaw ib ntus thaum FMC kev cai yog tsim.
Cov txiaj ntsig zoo suav nrog kev ua neej ntev (10-15 xyoos nrog kev saib xyuas kom zoo), txo cov hniav tsawg dua piv rau cov plooj (porcelain) -fused- rau-hlau (PFM) crowns, thiab zoo heev haum uas tiv thaiv kab mob infiltration. Cov kev txwv yog qhov txwv tsis pub ua kom zoo nkauj-lawv cov xim hlau ua rau lawv tsis haum rau cov hniav sab nrauv- thiab muaj peev xwm hlau rhiab heev nyob rau hauv tsawg zaus.
Kev saib xyuas yuav tsum tau txhuam hniav, txhuam hniav, thiab tshuaj xyuas hniav -ups kom khaws lub qhov ncauj kev noj qab haus huv thiab kev ncaj ncees. Kev zam kev quab yuam ntau dhau los ntawm cov khoom noj nyuaj ntxiv txuas ntxiv lawv txoj sia, ua kom FMCs ua kom muaj txiaj ntsig zoo rau kev rov ua haujlwm rau cov hniav tom qab.