Avoid IPR by Widening Arch?

No days its done automatically in the Clinchek or program built into your treatment. If you do a refinement then for sure have them widen the arch first and do IPR second. They may be able to do the IPR in a different place other than where you've had the IPR before. .4 and .5mm is really the most we like to do. but there's still ample enamel left after that is done..Be sure and get a flouride treatment when your treatment is finished to harden your enamel....

No orthodontist wants to do a lot of expansion (unstable), or a lot of IPR (too much can damage the teeth) or extraction of teeth.....nonetheless these are the major ways space is created for crowding and reduction of protrusion...Bottom line  you have to get the space somehow so every option is a trade-off.  You need to go over this with the doctor

Although Invisalign aligners can get some widening, it is mostly alveolar in nature.  However, you can get massive true bone widening through the use of dentofacial orthopedic appliances such as a Schwarz appliance.  Only a small percentage of orthodontists use these techniques on adults, and they do so with slow activations, one to two a week.  Over a 4-6 month period as much as 8mm of expansion can occur giving you that wide U shaped archform.  This can not only eliminate the need for IPR but can eliminate extractions in most cases.  After the expansion takes place, Invisalign can take over and get you the great result you want, a beautiful Movie Star like smile.