• Complete crown
• Partial crown
• Onlay
• Inlay
• Groove
• Slot
• Non invasive/extracoronal – wings
• Non invasive/extracoronal – splint (Rochette splint)

Biomechanics of the Bridge Framework

Primary Roles of Bridge Framework Are:

• To carry the pontic
• To shift the load applied to pontic during mastication to abutment teeth.

The major portion of masticatory forces shifted by bridgework from pontic to abutment teeth act vertically. Therefore the bridgework is subject to deflection. It creates compression in upper part of the structure and tension in lower part of structure. This type of stress requires to put substructure (Dentapreg^TM PFM or PFU strip) in the bottom part of bridge framework. There are also peeks of shear stress in the interproximal area between abutment teeth and pontic. In order to minimize these peeks it is recommended to form a small curvature with Dentapreg^TM PFM or PFU strip.

Bridges Made from Dentapreg^™  PFM or PFU^

Retentions

Extracoronal retentions:

• Complete crown
• Partial crown

Intracoronal retentions with reduced invasivity

• Onlay
• Inlay
• Slot

Extracoronal non invasive retentions

• Wing
• Splint (Rochette bridge)

Symmetry of Retentions

• Bridge with one type of retention (uniform retention)
• Bridge with two types of retention (combined retention)

Durability

• Permanent bridges
• Semipermanent bridges
• Provisional bridges

Reasons of Fracture of Removable Dentures and Appliances

• Extreme loading during chewing process
• Long-time bending as a result of chewing process
• Failure on interphase between removable denture or appliance and resin teeth
• Fall down of removable denture or appliance

Repair of Cracked and Broken Removable Denture

• Removable denture service life extension
• Easy way of processing
• Securing patient's comfort

Reinforcement of Removable Denture

• Increasing of removable denture mechanical properties
• Removable denture service life extension
• Easy way of processing
• Securing patient's comfort