This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Odontalgia that is occasionally typical in hypertensive patients is a result of 
Select and explain. 
A. Headache radiating to the teeth, B. Nervous tension and worry, C. Hyperaemia of pulp resulting from increased blood pressure, D. Abnormal stimulation of the sympathetic nerve system
C: Hyperaemia of pulp resulting from increased blood pressure
Answer: C: Hyperaemia of pulp resulting from increased blood pressure 
Explanation: None