1. Click on the link 64-bit Compatibility Patch for 3D Tooth Atlas v.5.0.
2. Complete the form then click 'Submit'.
3. Right Click on the alert download file then select Download Files.
4. Select 'Run' to start download the patch.
5. Close all web borwser and other applications when the installation starts.

file:
64-bit Compatibility Patch for 3D Tooth Atlas v.5.0