Nobody suddenly expects they will encounter any dental emergency when they are wearing braces. It can occur at any time. Besides having a chipped tooth or knocked-out teeth that can bring about a severe ache in the tooth, orthodontic emergencies are unlikely to occur.
With Invisalign being the most modern method of teeth strengthening, you do not have to use the old traditional braces anymore. Invisalign are clear plastic aligners specially made for patients who desire to strengthen their teeth to have a more aesthetic smile.