Because Ribbond also bonds to acrylic and bis-acryl, it is commonly used for making reinforced provisional bridges. For longer-term bridges, multiple layers of Ribbond make a strong stress bearing laminate structure to act as a framework. For simple provisionals, one piece is commonly used to prevent cracks from propagating through the resin past the Ribbond. Although a crack may start, the Ribbond prevents catastrophic failure and maintains the integrity of the bridges.
Measure distance between outsides of abutments.
Place a thin layer of composite on preps for retention. Do not acid etch.
Wet Ribbond with unfilled bonding resin.
Wetted Ribbond changes from white to translucent.
Push Ribbond through composite, against the teeth, and polymerize. If using acrylic, wet polymerized Ribbond with monomer.
Keep Ribbond towards gingival region in pontic.
Confirm placement of Ribbond within vacuum formed matrix.
Inject provisional bridge composite gingival to Ribbond.
Place loaded tray over abutments.
Ribbond visible on occlusal surface of abutments.
Composite provisional bridge Finished