i am 30 yo and have noticed dramatic crowding and rotating of upper and lower teeth within last 4 months. i followed up with dentist numerous times in last few months for cleaning, consultations, wisdom teeth extraction, filling of a small cavity on molar tooth. numerous xrays taken and both general dentist and oral surgeon assure me that xrays show no signs of decay and gums healthy (despite previous heavyuse of narcotics). only concerrned about bone density and discussed cat scan but not enough evidence to justify it. concluded that i am just experiencing crowding of teeth cuz narrow jaw and is common in adults. xrays and exam show teeth are healthy and not going to fall out. however, consistenly feel an uncomfortable pressure like pain of teeth involved. found invisalign candidate and fitting scheduled next month. my question is..can "healthy" teeth just fall out or will they just shift? i consistently obsess bc every time i swallow or move tongue over teeth i feel wierd sensation. am i just being paranoid? or could there be an underlying cause?