3D Scan Cleanup Specialist Needed

I need high-quality 3D scans of hand and teeth castings. The scans are currently in STL format and require several cleanup tasks:

- Smoothing surfaces
- Removing artifacts
- Enhancing details
- Expanding and adding portions

Ideal Skills and Experience:
- Proficiency in 3D modeling software
- Experience with STL file manipulation
- Strong attention to detail
- Ability to add and modify 3D geometry
-experience with dental software

Please provide examples of similar work done.