thanks for posting your question on Just Answer
I would advise you to never extract all your teeth unless you have take atleast 3 opinions
As far as your teeth breaking there is a possibility you have enamel hypoplasia
or some calcification problem in your teeth. and hence they break.
taking calcium supplments now is really not going to help your teeth specifically although it may help your general health.
you need to use a power tooth brushwww.sonicare.com
sonic care flex care is one the top of the line tooth brushes
Clean your tongue thoroghly with a tongue cleanerhttp://en.wikipedia.org/wiki/Tongue_cleaner
60-70 percent of the bacteria live on the tongue and cleaning
the tongue a few times a day will improve hygiene.
unforutnately you cannot take care of it your self the natural way, \
I do not suggest you to try home remedies or self medication
I suggest you get a second opinion from another dentist
and x rays will tell the dentist if there are calcification problems
in your teeth.
but Unless Medically extremely necessary because of infections
and root problems you should not extract your teeth
please feel free to ask a follow up question