Disadvantages ntawm cam khwb cia porcelain hniav

Tus nqi ntawm cov ntaub so ntswg tiag tiag yuav raug tshem tawm los ntawm cov hniav plooj (porcelain) ntau dua li cov plooj (porcelain fused to metal crown), txwv tsis pub cov porcelain txheej yog nyias thiab yooj yim tawg. Lub zog ntawm cam khwb cia cov hniav nyiaj hniav kub tsis siab npaum li cov plooj (porcelain fused) rau cov hniav hlau. Nws yog feem ntau tsuas yog siv rau kev kho dua tshiab ntawm ib lub kaus mom, inlay, siab inlay thiab veneer ntawm cov hniav anterior, tab sis tsis yog rau kev kho cov hniav tom qab.