Clean up 3D scan

Sometimes a 3D scan has jagged protrusions.

• Go to the sculpting workspace
• select the 'Simplify' brush
• Set autosmooth to 1
• enable 'Dyntopo'
• Change the 'Refine Method' to 'Collapse Edges'
• Deselect button 'X' in the Symmetry tab

Sculpt over the glitch-feature. It should easily disappear.