Differential Diagnosis for Tooth Pain after Hitting Tooth

Single Most Likely Diagnosis

• Tooth Concussion: This is the most likely diagnosis because hitting a tooth can cause trauma to the periodontal ligament, leading to pain and sensitivity. The tooth itself may not be fractured, but the supporting structures can be injured.

Other Likely Diagnoses

• Tooth Fracture: A fracture of the tooth enamel, dentin, or cementum can occur due to trauma, leading to pain, especially if the fracture exposes the pulp.
• Pulpal Contusion: Similar to a tooth concussion, but the trauma affects the pulp inside the tooth, potentially leading to inflammation and pain.
• Periodontal Ligament Injury: The periodontal ligament can be stretched or torn during the trauma, causing pain and sensitivity.

Do Not Miss Diagnoses

• Tooth Avulsion: Although less common, if the tooth is completely displaced out of its socket, it's an emergency requiring immediate attention to save the tooth.
• Root Fracture: A fracture of the tooth root can be serious and may require surgical intervention or extraction if not properly managed.
• Alveolar Bone Fracture: A fracture of the bone surrounding the tooth socket can occur with significant trauma and requires prompt medical attention.

Rare Diagnoses

• Dental Ankylosis: A rare condition where the tooth fuses to the surrounding bone, potentially occurring after a traumatic injury. It can lead to issues with tooth eruption or stability.
• Osteonecrosis of the Jaw: Although rare and more commonly associated with certain medications or conditions, significant trauma could potentially contribute to this condition in susceptible individuals.