Some view the implant provisional as a costly and unnecessary prosthodontic procedure, but in reality, routinely providing this simple service can save costly remakes. Casual observation of the planned prosthesis may not reveal issues which could potentially cause costly esthetic and/or functional failures. Gingival contours, anatomical form, occlusal parameters, as well as restorative space availability can all be assessed prior to the fabrication of the final prosthetic tooth replacement. All of the information gleaned from this prototype can provide a roadmap for the technician in the journey to a successful outcome. If you are able to provide a successful implant provisional, then you are almost certainly assured of delivering a successful final tooth replacement. Most importantly, if your provisional isn’t esthetic, functional, and hygienic, you have the opportunity to modify your prototype until you get it right! This is the only way to experience consistent results. View these quick fabrication steps to make your chair side experience easier…
Make a silicone shell of your wax up and then draw the emergence profile on your cast.
Remove the wax up and grind away the stone in a convex form. The final result will allow as much tissue thickness and blood supply as is possible.
Cut your silicone shell in cross section and use it to adjust the provisional implant cylinder leaving at least 2.0mm of space for the acrylic resin.
Close the cylinder chimney with wax and lubricate your cast with vaseline. Drill an escape vent in the silicone shell prior to filling it with acrylic resin. Force the shell into place and place the cast in a pressure pot with warm water without submerging the cast.
Use a small round bur to access the chimney and clean out the wax. After a few weeks post insertion, you can take a master impression with the provisional in place. Remove the provisional from the implant and screw an analog into place. Pop the provisional back into the impression and pour in your favorite die stone to reproduce the gingival profile with great fidelity!