The first week

The goal of the first week is to let your child get used to having the trainer in. Every child goes at their own pace, so use the steps below as a guide and take it slowly together.

A HIKARI trainer being worn in the mouth — What it looks like when worn

Start wearing it from day one

You can start on the first day: practise for 1–2 hours in a row before bed, then keep it in for sleep.
Some children can sleep with it in from the very first night, and most manage a whole night at around day three.
Before putting it in, have your child drink water, use the toilet and say what they want to say.
While wearing it, close the mouth naturally and bite lightly. No talking.
It’s fine if the mouth opens a little during sleep, as long as the trainer stays in.
If you find it out in the morning, don’t scold. Just practise a little longer before bed the next day.

What the first week feels like

In the first week, teeth may feel slightly sore or weak in the morning. This is a common part of getting used to it.
During this time, soft or liquid breakfasts help, such as congee, eggs, milk, yogurt or soup.
The soreness usually fades gradually after about a week.

Still can’t wear it all night after a week?

See “What if my child can’t keep it in?”, work out which cause fits and adjust. If soreness continues or your child still can’t wear it, please see your clinician.

This page is for general health education and does not replace a clinician’s diagnosis or advice. Please use HIKARI as directed by your clinician.