Teeth orthodontics unsatisfactory result?

when i was 13 i got braces put on. when i was 14 the orthodontist said that i needed to get my four premolars extracted because there was not enough room to push my teeth in(for an overbite). against my parents best wishes i acquiesced because i wished to have nice teeth. i was influenced by the authority of the doctor and friends who had good results. my dad even took me to his friend who was a dentist and she recommended not to, but still, i thought it was a good idea and i would get wonderful results. okay, so i took them out. then my parents kept telling me during treatment that my teeth were horrible and that they looked like they were slanted inward. i had insurance that whole time. they decided who my doctors were etc. now i am 22 and ihave a different insurance. i have been unhappy with the way my teeth look and feel. since they are slanted inward i find plaque aculates on the inside much easier and i still have a gap between my two front teeth, albeit small. i went to the orthodontist who said my whole treatment was horrible and that they never fixed the original problem(that i had an overbite and my teeth never touched) they just slanted my teeth inward. it wouldn't be that bad, except for ever since then ive had root resorption. my teeth are perfect, i have excellent hygeiene. never had a cavity. but when i got my braces off my original ortho asked if i had been punched in the mouth or seen any trauma. i was in complete shock, i had never been. and he said its because my teeth got root resorption and will be loose and eventually fall out. after that when i went to dentists they said there was a little shrinkage of the root but not enough to fall out. still, they've been loose ever since my orthodontics. loose enough for them to wobble when i exert pressure with my tongue and they move all the time. i hate going to get cleanups from the dentist cuz im scared theyll break with all that pressure and i would never be able to bite an apple cuz im scared theyll break. ive been ured thus far that they are fine and will never fall out. but the looseness bothers me alot. my dad has gingivitis and his teeth are stronger than mine and like isaid before i've never had any cavities! i've been told i should get braces again and that they use different braces with less pressure than traditional ones but i'm still scared to exert any kind of pressure on them. what should i do? im really really scared that eventually theyll fall out. even if they never do, what can i do about the looseness? i don't want to get them bonded like an old person!