Your teeth have a surprisingly long story.

Some begin developing before you’re even born. They then spend decades biting, chewing and helping you speak and smile.

And just like the rest of your body, teeth change throughout life.

So what actually happens to a tooth from childhood through to your 70s and beyond?

Childhood: The First Teeth Arrive

Most babies begin getting their first teeth at around six months of age, although timing varies considerably.

These primary, or “baby”, teeth may only be temporary, but they have important jobs.

They help children chew and speak and maintain space for the permanent teeth developing underneath.

By around age three, most children have their full set of 20 primary teeth.

Then, several years later, things begin changing again.

Around Age Six: The Adult Teeth Begin Appearing

At approximately six years of age, permanent teeth begin erupting.

One of the first is often the first permanent molar.

These teeth appear behind the baby molars, meaning no baby tooth falls out to make room for them.

This can sometimes lead parents to assume they’re still temporary teeth.

They’re not. These molars are designed to remain for life.

Over the following years, baby teeth gradually loosen and are replaced by permanent teeth.

The Teenage Years: Your Bite Is Taking Shape

By the early teenage years, most permanent teeth have erupted, apart from wisdom teeth.

The jaws are still growing and tooth positions may continue to change.

This is also a common period for orthodontic treatment.

Teenage teeth can be strong and healthy, but diet and oral hygiene become particularly important as young people gain more independence over what they eat, drink and how consistently they brush.

Your 20s: Wisdom Teeth Join the Story

Wisdom teeth typically appear during the late teens or twenties, although some people never develop them and others have teeth that remain beneath the gum.

By this stage, your permanent teeth may already have been working for 10 to 15 years.

This is also when lifestyle habits begin having a greater cumulative effect.

Diet, oral hygiene, smoking, sports injuries and grinding can all influence how teeth fare over the decades ahead.

Your 30s and 40s: The History Begins to Show

By your 30s and 40s, your teeth have been through thousands of meals.

Small amounts of wear may become more noticeable.

If you’ve had fillings, those restorations are also ageing alongside the tooth.

Teeth can gradually become darker or warmer in colour as enamel changes and the underlying dentine becomes more visible.

You may also begin noticing subtle changes in tooth position or gum levels.

None of this automatically means your teeth are unhealthy. It simply means your mouth has a history.

Your 50s and 60s: Protecting What You Have

By this stage, prevention becomes increasingly important.

Decades of chewing, previous dental treatment and lifestyle habits can all contribute to how teeth look and function.

Gum health is particularly important because the supporting tissues around teeth play a major role in keeping them stable.

Some people also experience dry mouth, particularly if they take medications that reduce saliva flow.

Because saliva helps protect teeth, persistent dryness deserves attention.

Your 70s and Beyond: Natural Teeth Can Last

There’s a persistent myth that losing teeth is simply an inevitable part of getting older.

It isn’t.

While the risk of certain dental problems may increase with age, natural teeth can potentially remain healthy throughout life.

Older teeth may have more restorations and show more wear, but age itself doesn’t automatically cause teeth to fall out.

Maintaining healthy gums, controlling decay and caring for existing dental work can all help preserve natural teeth.

Every Tooth Tells a Story

A tooth in a 70-year-old mouth isn’t supposed to look exactly like a newly erupted tooth in a teenager.

It has experienced decades of chewing, temperature changes, meals and perhaps a filling or two along the way.

That’s part of its history.

The goal isn’t to stop teeth from ageing. It’s to help them age well.

Wherever you are in the life of your smile, regular care can help us identify changes early and protect the teeth you have. If it’s been a while since we’ve seen you, come and visit us. Your teeth may have many more decades of work ahead of them.