Either: It could be either. You should probably have your dentist take a look. It could just be the pressure from the expander, a tooth that is going bad, or the expander pushing into the gum.
Answered 3/18/2015
4.7k views
See Orthodontist: Please see the dentist, pediatric dentist, or orthodontist who placed the appliance. It's probably a loose appliance (from hard/sticky/chewy foods). Could also be from tooth displacement, traumatic occlusion, or cavity. Don't wait, call now.
Answered 12/11/2013
4.7k views
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5 doctors weighed in across 3 answers
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