Hello, I will try to offer you some assistance concerning your mouth. I do not believe your teeth have been affected by your exposure. You are suffering from a severe reaction that has caused a great deal of inflammation. This may affect the soft tissue inside you mouth if exposed to any oils of these plants. Simply, inflamed tissue can equal sensitive teeth. Pain medication may help while the amount of inflammation is great. First, make sure you are not getting continued exposure to these plants and oils? Change your toothbrush and anything you may have touched which may carry the oil. There are some benzocaine gels or rinses that you could try for your mouth. Switch to a toothpaste for sensitive teeth. These have a chemical that blocks the tubules on the roots of your teeth to reduce sensitivity. Avoid an acidic diet. I believe there is a relationship between these plants and some foods: mangos and cashews. You need to give this time to heal. Rashes can easily last two weeks. Return to your doctor if you feel your symptoms are getting worse to see if you need more medication. Benadryl which is not a steroid can be taken and reduce uncomfortable symptoms. Topical solutions for your skin are available that can help you reduce the itchy feeling. I hope you will find some of these suggestions useful and I wish you a quicker recovery. Please keep your doctor updated on your progress and plan to see a dentist if your teeth do not start to feel better for a clinical evaluation.