I didn't wear my retainer for weeks and my teeth have shifted. I also lost the retainer so what do I do?

You may want to at least consider a replacement retainer to hold your teeth in their current position.  If your teeth moved so quickly after a few weeks of not wearing your retainer, it is possible that the shifting will continue and re-treatment may be more involved. 





I would recommend making an appointment with your orthodontist as soon as possible.  They will be able to evaluate the current position of your teeth and make the appropriate recommendations.  It is not always necessary to have braces put back on your teeth to realign them.  There are other treatment modalities.







You may want to consider a fixed lingual (behind the teeth) retainer to help maintain the alignment of your teeth.  Once again please discuss these options with your orthodontist. 







I hope this information helps.  







Dr. C

Whether or not you will need braces a second time depends on how much your teeth have shifted and how much it bothers you. You are correct that a new retainer will have to be in the shape of your shifted teeth. Without retainers, your teeth will continue shifting slowly. Have new retainers made to maintain current teeth position (if only slight change), or get braces again for a short time. After full-time wear for 3-6 months, removable retainers should be worn indefinitely at night time.