cdlab
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I have been having some issues with my mill (VHF Mini) not milling out the abutment fit properly for my hybrid screw retained crowns and custom abutments...
Some cases the abutment slides right onto the ti base, and other cases (different case, but same exact 3shape library file, same platform, etc) the abutment is a full millimeter off (it is way too small for the ti base to fit into).
Design is with 3shape, some cases mill out perfectly, and some don't fit at all! I measured in 3rd party cad software both the abutment files that mill out correctly, and those that don't...all of them measure exactly the same (correct dimensions for the ti base to fit in...3 mm).
So in digital space, the dimensions are perfect for a 3mm ti base to fit for all the stl files, after milling, the dimensions are in some cases perfect at around 3mm, but other cases are 2.4mm.
Anyone else milling abutments with a mini? Any advice? Within the CAM software there is an abutment option, also 4/5 axis finishing with priority on the Cavity, also an option to increase the abutment fit by anywhere from .01 to .25 mm (oversize of abutment fit)....still no good!
Any advice or insight would be greatly appreciated.
(more info: all digital, model-less workflow, trios scan -> 3shape w/Glidewell library 4.5mm ti base -> stl fit is perfect in cad (measured both digi library file and stl output from dental designer) -> milled fit is sometimes perfect, but sometimes a full 1mm off!)
Some cases the abutment slides right onto the ti base, and other cases (different case, but same exact 3shape library file, same platform, etc) the abutment is a full millimeter off (it is way too small for the ti base to fit into).
Design is with 3shape, some cases mill out perfectly, and some don't fit at all! I measured in 3rd party cad software both the abutment files that mill out correctly, and those that don't...all of them measure exactly the same (correct dimensions for the ti base to fit in...3 mm).
So in digital space, the dimensions are perfect for a 3mm ti base to fit for all the stl files, after milling, the dimensions are in some cases perfect at around 3mm, but other cases are 2.4mm.
Anyone else milling abutments with a mini? Any advice? Within the CAM software there is an abutment option, also 4/5 axis finishing with priority on the Cavity, also an option to increase the abutment fit by anywhere from .01 to .25 mm (oversize of abutment fit)....still no good!
Any advice or insight would be greatly appreciated.
(more info: all digital, model-less workflow, trios scan -> 3shape w/Glidewell library 4.5mm ti base -> stl fit is perfect in cad (measured both digi library file and stl output from dental designer) -> milled fit is sometimes perfect, but sometimes a full 1mm off!)