Koreans use it when they have a toothache or feel pain in their teeth and need to explain their condition.
Yes. "이가 아파요 (iga apayo)" is polite and natural. You can also say "이가 아파 (iga apa)" casually.
You can say "My tooth hurts" — 이가 아픕니다 (iga apeumnida).
이가 아파요 means "My tooth hurts" / "I have a toothache." 이 (i) = tooth, 가 (ga) = subject marker, 아프다 → 아파요 (apeuda → apayo) = to hurt → polite form. Common at dental clinic, pharmacy, or telling family/friends.
1. At dental clinic: Explain toothache.
2. Daily life: Tell family you have pain.
3. Pharmacy: Ask for pain relief.
My tooth hurts. Since yesterday.
My tooth hurts. I want treatment. (Formal)
My tooth hurts. I should go to dentist. (Casual)
My tooth hurts so much I can't eat.
• 치통이 있어요 (chitongi isseoyo) - I have toothache
• 머리가 아파요 (meoriga apayo) - My head hurts
• 잇몸이 아파요 (itmom-i apayo) - My gums hurt