Tooth Atlas 6.4 is not supported on Safari 5.1 or Mac OS X Lion (both were released in late July).

If you've recently made either of these upgrades, you might notice certain interactive graphics are no longer visible.

A new version of Tooth Atlas (version 6.5) will be released in early September. 

Tooth Atlas 6.5 will work on both Mac OS X Lion and Safari 5.1.

If you have Tooth Atlas 6.4 and would like to upgrade to Tooth Atlas 6.5, please contact support@ehuman.com.

For more information visit the eHuman Lion Support Page.