What does it mean when a toothache causes pain on one side of the face?

Toothache causing pain on one side of the face is usually triggered by inflammation in the teeth or inside the mouth. Below are several possible causes along with brief explanations: 1. Pulpitis or periapical inflammation: When tooth decay reaches the dental pulp, it can cause an infectious inflammation. This type of inflammation often exhibits a radiating pattern, spreading outward from the tooth to surrounding areas, frequently extending to the ear and temple region, causing facial pain on one side. 2. Pericoronitis of wisdom teeth: Wisdom teeth are the last to erupt in the dental arch. Due to insufficient space, they often erupt incompletely, becoming impacted or malpositioned. The gum tissue around wisdom teeth is prone to injury, leading to pericoronitis. As the condition progresses, pain may radiate to the corresponding side of the head and face. 3. Other causes: Besides the above reasons, toothache causing facial pain may also be related to factors such as dental caries, gingivitis, improper chewing habits, or trauma. These factors can all lead to inflammation in the teeth or oral cavity, subsequently causing pain on one side of the face. When toothache results in facial pain, it is important to promptly visit a reputable dental hospital for examination and treatment in order to identify the underlying cause and implement appropriate therapeutic measures.