A fixed bridge is an alternative to a partial denture. Bridges are normally made from a metal base. A porcelain crown is then fixed to the base.
By its nature a fixed bridge cannot be removed. You can normally have a bridge if yuou have enough teeth with good bone support.
Other types of Bridges
With an adhesive bridge fewer of you existing teeth need to be removed. Adhesive bridges are made of a false tooth with metal wings, these are made to bond with your teeth and need very little drilling. The teeth are roughened and the bridge is then glued into place with a resin.