DESS has a library to make a bar direct to the SRA abutments and you can use your existing Straumann scan bodies - In the USA it is at https://www.dess-usa.com/library-files/ and click on the DESS Librray File for exocad/3Shape and in Europe it can be found here -https://www.dess-abutments.com/downloads/index.htm.
If you need any assistance please email us at [email protected] and can assist you.