Hello sir...
There are 2 different types of Esthetic crowns...
1.Metal ceramic crown(porcelain(tooth coloured material) is fused to underlying metal substructure)
2.zirconia crown(crystals of zirconium dioxide, which is nothing but a diamond crystal material)
METAL CERAMIC CROWN:
ADVANTAGE:
** Biocompatible(Doesnt cause any reaction to oral tissues)
**Aesthetically pleasing
**Hardness is good because of underlying metal substructure..
**Reasonable price..
DISADVANTAGE:
**Dark line on tooth structure because of metal substructure
**If the biting force exceeds,the porcelain will chip off and it will expose underlying metal structyre whch will be unaesthetic...
** More tooth trimming is necessary (because it has metal substructure and tooth coloured porcelain over it)
ZIRCONIA CROWNS...
It is nothing but METAL FREE crowns.....
ADVANTAGE:
**Durability( extraordinary strong)
** withstand much biting force than metal ceramic crown...
** More aesthetic th
Answered2018-07-27 09:00:11
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