If decay or a broken/chipped tooth or a cracked tooth is the cause of your pain, immediately see an emergency dentist. If swollen gum or face is the cause of the pain, again see an emergency dentist immediately. Please be aware using painkiller gels near your sore tooth or gum may chemically burn the gum and lead to pain and more complications. Oral pain killers can be a better solution for these situations. Avoid overdosing and always read the label of painkillers bought over the counter. If food impaction causes toothache, rinse mouth with warm salt water and floss to get rid of debris. Applying cold compress to the check can lessen swelling.