Crowns And Bridges

• Bridging is a type of fixed dental restoration technique which is used to replace one or more missing teeth by joining a prosthetic tooth to dental implants or adjacent teeth.

Conventional bridge

• Conventional bridging is built using high translucent zirconium with VM9 vita porcelain and stained with luster paste. Here the upper first premolar is considered the pontic and the teeth prepared are abutments. 
• Full coverage crowns, three-quarter crowns, post-retained crowns, onlays and inlays on the abutment teeth support the conventional bridges.
• For supporting the prosthesis, the abutment teeth require preparation and reduction.
• Conventional bridges are named depending on the way the pontic (false teeth) is attached to the retainer.

Fixed-fixed bridges

• It refers to the false tooth which is attached to a retainer at both the sides of the space with only one path of insertion. Here the design has a connector at both the ends which is fixed and which connects the abutment to the false tooth (pontic).  Because the abutments are connected together tightly it is crucial that during preparation of the tooth the nearest surfaces of the abutment teeth must be prepared such that they stand parallel to each other.

Cantilever

• In a cantilever bridge, a pontic is attached to a retainer at only one side. The abutment tooth may be mesial or distal to the pontic.
• A cantilever is a bridge where a pontic is attached to a retainer only at one side. The abutment tooth may be nearer or farther to the pontic.