When the initial bite or the position of the teeth doesn't leave enough room to fit lower braces because of where the upper teeth sit (for example, with a deep bite at the front), we use bite stops, also called bite raisers. They stop the upper teeth from touching the lower braces when you close your mouth, which could otherwise make the braces come off.
Bite raisers can be placed on the upper or lower back teeth and are usually made of a material in a different colour from the natural tooth, so that they can be clearly seen when they are removed. They are bonded directly onto the tooth without damaging its structure and are then ground down until they are even on both sides. Once they are in place, you'll notice that when you close your mouth your front teeth don't touch, while your back teeth meet something hard – and this takes some getting used to.
The feeling is a little unsettling at first, and it takes about a week to get used to it. Eating changes during this period too – small, grain-like foods such as lentils or peas aren't recommended, as they can be hard to chew properly.
The most common question patients ask straight after their bite raisers are fitted is: ‘When are we taking them off?’
The most accurate answer is: ‘When they are no longer needed.’
How long they are worn depends on the individual case and can range from 2-3 months to 7-8 months or more.
This answer is for general information. Your own case needs an examination by an orthodontist.