A dentist or orthodontist will normally recommend a retainer after your braces have been removed. Their primary intention is to ensure that your teeth remain straight — and do not shift back into their previous positions. 

For that reason, retainers are often required for a lengthy period of time. Why is this the case?

The answer partially depends upon your unique orthodontic situation. After all, some corrective procedures require more time than others. The main issue here is that failing to wear a retainer could very well reverse the results of an otherwise successful orthodontic procedure. 

Be sure to keep these points in mind:

• Without a retainer, your teeth may begin to shift back to their original positions. 
• Most retainers must be worn during the overnight hours.
• In the majority of cases, you may need to use a retainer for approximately one year after the initial treatment has been completed.

“Many people don’t realize that they need to wear their retainer for much longer than expected.”

Learn more about the importance of retainers here:

https://yourdentalhealthresource.com/do-i-really-need-to-wear-my-retainer-forever-and-why/