I ran out of elastic bands and the orthodontic office is closed for today and sunday will this affect my teeth, is this okay?

Not really: Not having ur rubber bands for just couple of days can not derange ur teeth and bite badly. Be sure to see them monday or tuesday. Good luck.

Is OK: Not wearing your elastics for two days should not have any negative effect on your orthodontic treatment.

Short term OK: Not wearing the rubber bands for a short time, should not create issues. Don't wait too long, though, and get into the orthodontist as soon as you can.

Not great...: ...but a few days over a couple of years is not a big deal. Call the Orthodontist's office. Leave a voicemail telling them who you are and what size elastics you need, and they will mail them out 1st thing on the morning the office reopens.