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Herpes simplex virus may recur or "flare-up" as cold sores in or around the mouth after dental procedures. Contributing factors might include trauma to the mouth, emotional stress, and/or a more susceptible immune system. Your dentist may prescribe an antiviral drug to treat the problem.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.