I call this radical psudo-science. I will temper my actions by instinct. If I feel something is wrong, I will back off. I taught myself basic dentistry that way--I even performed minor surgery on a tooth {pulp} with success, and disproved the diagnose provided to me by my dentist. Cool eh? I now have all equipement and materials to perform dental work on myself for life. I despise the international dental associations and their monopoly. Shroom