Category Archives: Fixed Bridge

Fixed-movable Bridge

Fixed/movable bridge is a fixed restoration where the pontics are supported rigidly on one side by one or more abutment teeth, and a precision attachment on the other side. Precision attachment allows a small degree of movement between the rigid component and the other abutment tooth.

Fixed/movable bridge. Photo credit: Dr. Jesus Lecitona
Fixed/movable bridge. Photo credit: Dr. Jesus Lecitona

Indication
1. Where abutment teeth are tilted or totated in relation to each other and the preparation needed to make them parallel would be highly destructive to tooth.

Advantages
1. Divergent abutments can be used.
2. More conservative of tooth structure.
3. It allows minor movements of abutments in relation to each other.
4. The bridges can be cemented separately.

Disadvantages
1. More demanding of lab time.
2. More expensive.
3. Provisionalization is more difficult due to tilting of the abutment teeth.

For more info about Fixed-movable Bridge, visit our clinic.

Fixed-fixed Bridge

Fixed/fixed bridge is a fixed restoration where the pontics are supported rigidly on either side by one or more abutment teeth.

Fixed/fixed bridge.  Photo credit: Dr. Jesus Lecitona
Fixed/fixed bridge. Photo credit: Dr. Jesus Lecitona

Indication
1. Where missing units are bound by abutment teeth which are capable of supporting the functional load of the missing teeth.

Advantage
1. Fixed/fixed bridge is a strong and retentive restoration for replacing missing teeth. It can be used for single or multiple missing units with the abutment teeth splinted together.

Disadvantages
1. Fixed/fixed bridge requires the preparation of the abutment teeth to be parallel to each other which may mean overpreparation of the teeth, structural weakening of the tooth and endangering the pulp.
2. Teeth do move independently in function and this can lead to cementation failure of a fixed/fixed bridge.

For more info about Fixed-fixed Bridge, visit our clinic.

Resin Bonded Bridge

Resin Bonded Bridge is a fixed restoration constructed of a cast metal framework which is cemented to the enamel of abutment teeth by an adhesive composite resin.

Unglazed resin bonded bridge. Photo credit: Dr. Jesus Lecitona
Unglazed resin bonded bridge. Photo credit: Dr. Jesus Lecitona

Indication
1. To replace teeth where the abutment teeth are unrestored and the use of conventional bridgework would cause too much tooth reduction.

Advantage
1. Minimal preparation of the abutment teeth is required and all is within enamel, as the retainer is attached to the abutment teeth using acid etch adhesive resin cement.

Disadvantages
1. Resin bonded bridge can easily debond if good isolation is not obtained during cementation.
2. If insufficient enamel is present, resin bonded bridge is contraindicated.
3. It is also contraindicated where there is evidence of severe tooth wear, parafunctional or insufficient interocclusal clearance.

For more info about Resin Bonded Bridge, visit our clinic.