Use the command Edge > Bridge Edge Loops . Blender will create a "skin" across the crack.
Hold Shift while brushing over the inflated area. This melts the new geometry into the surrounding tooth structure, effectively "patching" the gap. blender for dental crack patched
If the crack is on the prep margin, the final restoration won't fit the patient. Pro Tip: Blender for Dental Add-on Use the command Edge > Bridge Edge Loops
If you do this professionally, the add-on automates these steps. It includes a specific "Model Builder" module that closes holes and patches cracks with a single click, saving hours of manual sculpting. saving hours of manual sculpting.