- Age one: All temporary teeth are in which are the incisors, premolars, and first molars.There are no signs of wear around the edges.
- Age three: Large permanent central incisors have grown in, the smaller teeth around them are still only temporary. The wolf teeth and first and second permanent molars are present.
- Age five: All the baby teeth have been replaced by permanent teeth, this is known as a full mouth. there may be a little wear.
- Age ten: The incisors start to angle forward. There's a notch on the upper corner incisors from where they meet the lower incisors. There will be a lot of wear and you can see the Galvayne's Groove.
- Age twenty: Teeth are noticeably longer and angled farther forward. The gums have receded a little and the Galvayne's Groove has descended.
