Fixing the dental infection we agree-saved my life.
Root canals-we clearly, respectfully disagree. I would never get one-make no sense to keep dead piece of body in body. For crowns or anything dental material I hope your dentist check to see of you are allergic to material.
There is a simple blood test-I think it cost 100.00.
Using material that you are allergic to not healthy or smart
The test I know of is called a Clifford test-I think there are others