在出生後12個月內母乳哺乳對於蛀牙的預防是有益的。

但在12個月後，因為飲食中含糖食物的增加，蛀牙的風險本來就會提高。
此時“想喝就喝”的哺育模式，或是睡覺時還要喝奶，就與蛀牙發生的機率有正相關了。

Breast feeding is beneficial to caries prevention for infants under 1 year.

After infants turn 1 year old, the risk of tooth decay increases as they start to eat food containing sugar.

This “feed as you wish” method or feeding during sleep can cause tooth decay.