It's a normal phenomenon for a hamster's teeth to turn yellow. This is because the hamster's tooth enamel is rich in iron minerals, which gives their teeth a yellow color. This color change isn't a disease or an abnormal condition; rather, it's a normal characteristic of hamster teeth.

Reasons for Hamster Teeth Turning Yellow
The main reason hamsters' teeth turn yellow is that their tooth enamel contains abundant iron minerals. These minerals protect the teeth and make them appear yellow. So, yellow teeth don't indicate that there are health problems with the hamster.
How to Maintain Hamster Oral Health
Although yellow teeth are normal, breeders still need to pay attention to the hamster's oral health. Regularly check the hamster's teeth to make sure there are no cracks, breaks, or excessive wear. These could be signs of other health issues, such as calcium deficiency or a lack of items for grinding teeth. Additionally, diet also affects a hamster's dental health. Providing foods rich in fiber and a balanced diet, like hay and leafy greens, along with an appropriate amount of chew sticks, can help maintain the hamster's oral health.
Relationship between Hamster Tooth Color Changes and Health Conditions
If a hamster's teeth turn white, this could be a sign of calcium deficiency or other diseases. Breeders should promptly supplement calcium, properly balance the diet, and occasionally provide high - calcium nutritional paste or calcium powder. Conversely, if a hamster's teeth are yellow, it usually means they are healthy, as yellow teeth indicate that the hamster has a normal iron mineral content in its body.