try university dentistry if want cheaper, but waiting list sooooooo looonnngggg.
i was told if your root is not strong or have some problem, the you need to correct it first before using braces, otherwise it might make the teeth even weaker... The dentist should check and tell you what to do.

no.... your dentist asked you to avoid hard food coz the damaged to your tooth is probably pretty severe... hence the root treatment.... if it's too severe for normal restoration then you will have to go for crowning....

'weak' root is referring to your supporting tissue's health.... it's basically whether you have gum problem or not..... if you have severe gum problem(shaky teeth) then you are not a good candidate for braces..... if it's mild then your dentist will have to clean up your teeth and you have to keep them really clean for a period of time.... once the dentist is satisfy that you can maintain your dental health, then only you can go for braces.....

if your gum problem is not controlled, braces will make things worse..... your teeth will be pretty loose.... may even have them extracted if it's too loose....

no... your probably used hard/medium toothbrush and brushed too hard.... this will hurt your teeth(root area) and coz recession of your gum..... not necessary means you have gum problem...