- Health science
- Canker sores, halitosis, gingivitis
- Age 7-12
-
level: Grade 6
- English
คำแนะนำของผู้เขียน
Causes, symptoms and prevention of canker sores, halitosis and gingivitis.
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Diseases that affect the mouth
คำแนะนำของผู้เขียน
Causes, symptoms and prevention of canker sores, halitosis and gingivitis.