Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain and explanation of symptoms the pain in tooth doesn't seems to be due to the
cold sore rather it seems to be due to infection in the tooth which could probably be deep enough to irritate the nerves of the tooth causing pain..
I would suggest you to
consult a dentist and get evaluated along with an x ray of the offending tooth, in case it is found infected you need to take a course of antibiotics like
Amoxicillin 5OO mg thrice daily, Ibuprofen 4OO mg thrice daily and
Pantoprazole 4O mg once in morning empty stomach, along with it start getting treated by
Root Canal Treatment of the tooth..
You should also get treated for the cold sore which is a Herpes Virus infection, by oral and topical antiviral agents like Acyclovir to prevent further outbreaks of the sores..
Hope this information helps..
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Thanks and regards..
Dr.Honey Nandwani Arora..