I will hold with you. Teeth breaking can come from weakened teeth from lack of calcium (suspect this if your teeth have yellowed a lot) or from teeth that have had root canals. You might want to check the dental forums and the oil pulling forum. If you want to supplement calcium, be sure to supplement calcium and magnesium together.
I read somewhere a long time ago that supplementing with dolomite (calcium and magnesium from limestone)caused cavities to fill in and caused jawbone to be stronger. That is when I began using it and I have been using it for years now with no problems, although there is a group that advocates no minerals from anything but plant sources.
Best source is Puritan's Pride. Start with four per day.
I also did a lot of swishes with 3% peroxide or half peroxide and half mouthwash.
Anyway, I will pray, and you can pray and read - there is a ton of info here.