Hi there,
Though I can confirm the cause only after an evaluation but it is possible that infected tooth can lead to
sore throat. Whenever there is a cavity or
tooth decay the food gets lodged in the
tooth. The bacteria feed on the rotted foodstuff and eventually enter the Eustachian tube through the infected tooth. The Eustachian tube connects the throat, teeth; ears, eyes and head, infection that enters via the tooth can migrate or settle at one or more of these points causing pain.