Explanation:

- Pyria (or Pyorrhea) refers to a gum disease that affects the teeth and gums. It's often caused by poor oral hygiene, leading to inflammation and infection.

- Option 1: Eyes - Pyria does not affect the eyes.

- Option 2: Small intestine - Pyria is unrelated to the small intestine.

- Option 3: Teeth and gums - This is the correct option as Pyria primarily impacts these areas.

- Option 4: Large intestine - Pyria does not affect the large intestine.