Why Do I Have Pain After the Permanent Crowns Have Been Placed. I Had No Pain with the Temporary's at All?

It sounds as though the tooth is going to need a root canal. Though you did not have sensitivity in your temporaries, there are times when a tooth will "flare up" after the permanents have been seated.  If the pain is gradually getting worse you should consider having the root canal completed. The pain should subside rather quickly after the procedure. Good luck.    

Sounds like your new crown may be hitting too hard. Have the dentist check the bite especially in the chew cycle. Additionally, you may be grinding or clenching your teeth which would need some attention. Your dentist can help you out with that.

What you're describing sounds like the permanent crown needs a bite adjustment. If there is a "high spot" on the permanent crown, that tooth will be getting extra forces compared to the other teeth, which will irritate the tooth's nerve and cause it to become sensitive. When your dentist checks the bite, they should check it while you're sitting up in the chair, not laying down and they should have you tap on the teeth and grind around on it as well. You may want to take 800mg of ibuprofen 30 minutes before this appointment so you can bite firmly on the tooth and have it adjusted without feeling discomfort. This allows for the most accurate reading of the bite. Hope this helps!