Can invisible aligners widen a narrow dental arch? (Photos)

Looks like the heat may well  have distorted your retainer. If you can still wear it with not much discomfort,  try to do so to prevent “ drifting “ and movement of your teeth.  As soon as you get back see your orthodontist / dentist to consider making a new set of ...

Many patients use the device and they are happy with VPRO5. Those patients have claimed their teeth are moving faster.

It is very common that the first and second set of aligners can take time to get used to.  My patients that have had this issue report to me that after following these simple steps I have listed below noticed significant improvement and are very happy. Spend 1 hour a day reading out...

Smile Direct Club does not provide attachments (also called "anchors" or "buttons") on the teeth. These attachments are small, tooth-colored resins that are placed on the teeth to help the aligner grip the tooth and move it more efficiently. Some teeth, such as canines or some of the small...

If the cracks are minor, you may keep using it. If the cracks are large, you may need new retainers. 

Thanks for posting the photograph. Yes, your upper anterior teeth are retroclined now. It's my advice to go with aligners instead of metal braces. Because torque correction is very difficult with any kind of braces. It is very fast and controlled with aligners.