Why is it a triangular notch ?why not square or any other irregular shape?
@emaxdentistry8747
6 жыл бұрын
These are indexing notches. They are designed to help re-orient the cast to the mounting stone if you need to detach the two and reattach them. Other shapes can work too, they just need to be able to draw and be separated without breaking. I choose this triangle shape.
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