Revert to a Database Snapshot:
   RESTORE DATABASE { database | @database_name_var } 
         FROM DATABASE_SNAPSHOT = database_snapshot
This will restore the snapshot (to the same server/database/schema name.)
Example
USE master
RESTORE DATABASE ss64Database FROM DATABASE_SNAPSHOT = 'ss64_snapshot01';
GO
"There is no safety in numbers, or in anything else" - James Thurber
Related commands:
 Complete Restore - an Entire Database from a Full database backup. 
Partial Restore - part of database/point in time 
Restore Files - Files, Filegroups, or Pages 
LOG Restore - a Transaction Log
RESTORE FILELISTONLY - List  database and log files
  RESTORE VERIFYONLY  - Verify the backup but don't restore it
Equivalent Oracle command:  RMAN - Recovery Manager