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Although the timing when teeth starts to emerge differs between each individual baby, teeth usually start to emerge around 7 to 8 months after birth, and all ten primary teeth usually are present when an infant is two and a half years old.

Order of Appearance


Data: The Guidelines and Instruction for Maternal and Child Health in Japan

New teeth are very fragile

The enamel on primary teeth is less than half the thickness of that of permanent teeth Baby teeth are also softer, more prone to cavities and rapid cavity progression.

Breast milk may cause cavities

Allowing babies to hold the breast or the bottle in their mouths for prolonged periods of time may cause dental decay.

The reason to care for primary teeth

Some may neglect to take care of primary teeth, because these teeth will be replaced by permanent teeth in a short while. However, cavities will prevent the baby from chewing food well. This will cause poor digestion and it will also affect jaw development and in some cases, tooth decay during the early months will also affect future teeth alignment. 

Baby tooth care

When the teeth start to emerge: Wipe the teeth after nursing, eating and before going to sleep. ​

When molars start to emerge: Basic care is to be done with a toothbrush.  Make brushing a regular habit. Gently brush your baby's teeth after nursing, eating and before going to sleep.​

Use of oral care products according to teeth development

When the first teeth emerge: 
We recommend using a sheet-type product to wipe the teeth
When molars start to emerge: 
Make a habit of brushing by allowing your child to use a training type toothbrush. Have a parent use a finishing-type toothbrush to complete the brushing routine.

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