Is oatmeal bad for your teeth?

I have been told and also read online that foods high in phytic acid such as oatmeal are bad for teeth because they increase risk of cavities. They demineralize teeth faster than their ability to remineralize. I have a bowl of oatmeal about 5 mornings out of the week. I've had a few fillings done last year and wondering if me eating oatmeal has anything to do with this.
Is oatmeal bad for your teeth?
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