Fortunately for those of us who have experienced a lingering toothache, relief typically follows a visit to the dentist. Whether a filling, a crown (cap) or root canal therapy was necessary, pain reduction is common within 24-48 hours. But when a toothache won't go away in spite of the fact that the tooth pulp is healthy based on examination and x- ray investigation, believe it … [Read more...] about Lingering Toothache – Is It A Sprained Ligament?