Cracked teeth don’t always cause symptoms. When they do, the main symptoms include: Sharp pain when you bite down on a tooth. Sensitivity to temperature changes or eating sweet foods. Swelling around the tooth. Toothache when biting or chewing. Without treatment, a cracked tooth may lead to an infection (tooth abscess) that may cause serious health issues. Tooth abscess symptoms are: Bad breath (halitosis). Tooth pain that doesn’t go away. Fever. Swollen gums. Swollen lymph nodes.