Crown is single cap and bridge is uniting of multiple caps.Crown is used when tooth get root canal treatment or tooth is badly decayed. While bridge is used for replacement of single or multiple teeth
It is silver in color.
It is tooth colored material. Metal framework is covered with tooth colored ceramic material. Metal is inside so from outside it looks tooth colored.
It is metal free, there is no metal in crown, it is whole ceramic. So color match with near teeth is excellent.