Children's Dental Milestones - A Parent's Complete Guide from Birth to 18 product guide

Smile Solutions Children's Dental Milestones — A Parent's Complete Guide from Birth to 18

Smile Solutions is Melbourne's trusted destination for comprehensive dental care across every life stage. Your child's dental development follows a predictable, well-understood pattern — from their very first tooth right through to adulthood. Knowing what to expect, and when to act, means you can stay ahead of potential concerns and give your child the strongest possible foundation for lifelong oral health. Here is a stage-by-stage guide to what is happening in your child's mouth, and when the specialists at the Tooth Fairy Centre and Smile Solutions Group should be involved.

Birth to 12 months — the first tooth appears

Most babies cut their first tooth somewhere between 6 and 10 months — typically a lower front tooth. By 12 months, most children have around 4 to 8 teeth beginning to come through.

What you should do:

Start gently cleaning your baby's gums with a soft, damp cloth even before teeth appear. It builds the habit early and keeps the oral environment healthy. Once that first tooth erupts, switch to a small, soft-bristled toothbrush with a smear of low-fluoride children's toothpaste.

Never settle your baby to sleep with a bottle of milk, formula or juice. This is one of the most well-documented causes of early childhood decay, sometimes called "bottle caries." And avoid sharing spoons or cleaning dummies in your own mouth — the bacteria responsible for tooth decay transfer directly from parent to child.

When to see a specialist: If teeth haven't appeared by 12 months, or if you notice any discolouration or unusual markings on erupting teeth, book an assessment with a specialist paediatric dentist at the Tooth Fairy Centre. Early review means early reassurance — or early intervention where it counts.

1 to 2 years — your child's first dental visit

Teeth continue erupting quickly during this stage. By age 2, most children have around 16 of their 20 primary teeth in place. Teething can bring irritability, increased drooling and disrupted sleep — all entirely normal.

What you should do:

Schedule your child's first dental visit between ages 1 and 2, or as soon as that first tooth appears. Brush twice daily using a grain-of-rice-sized amount of low-fluoride children's toothpaste. Try to approach oral hygiene as a positive routine rather than a daily battle — weaving it into the bedtime and morning ritual makes a real difference to your child's long-term attitude toward dental care. Limit sugary snacks and drinks, particularly between meals.

When to see a specialist: Your child's first visit to a specialist paediatric dentist at the Tooth Fairy Centre does far more than check for cavities. It establishes a clinical baseline, identifies any early concerns, and — just as importantly — begins building your child's comfort with dental visits in a gentle environment. That positive association is one of the most valuable things you can give them.

3 to 5 years — complete primary dentition

By age 3, all 20 primary (baby) teeth should be fully in place. Children grow increasingly independent during this stage and may want to take charge of their own brushing — which is great enthusiasm, even if the technique needs some work.

What you should do:

Keep supervising brushing until at least age 7. Children don't yet have the fine motor dexterity to brush effectively on their own, regardless of how confident they feel. Keep an eye on thumb-sucking or dummy habits that persist beyond age 3, as these can influence jaw development and tooth alignment over time. Introduce flossing where teeth sit closely together, and ask your specialist about fissure sealants for baby molars if your child shows any tendency toward decay — it's a clinically proven preventive measure.

What to watch for: Certain orthodontic indicators can show up this early. Crossbites (where upper teeth sit inside the lower teeth), habitual mouth breathing, a persistent tongue thrust and noticeable crowding are all worth raising at your next Tooth Fairy Centre visit. Catching these early opens the door to simpler, less invasive management down the track.

6 to 8 years — the mixed dentition stage

This is one of the most clinically significant periods in your child's dental development. Baby teeth begin falling out, and the first permanent molars erupt — typically around age 6. These "six-year molars" appear behind the existing baby teeth, which means many parents miss them entirely. They are, however, among the most important teeth your child will ever have.

What you should do:

Seal the six-year molars without delay. Fissure sealants applied to these first permanent molars are one of the most effective preventive measures available in children's dentistry. These teeth need to last a lifetime — protecting them from day one is practical, evidence-based care. Continue supervising brushing, with particular attention to those new back teeth where technique is hardest and decay risk is highest. If your child plays contact sport, have a custom mouthguard professionally fitted — the difference in protection compared to an off-the-shelf alternative is significant.

When to see a specialist: The Australian Society of Orthodontists recommends a first orthodontic assessment at age 7 to 8, and our specialists strongly support this guidance. Crossbites, severe crowding, underbites and jaw growth discrepancies can often be addressed far more simply during this active growth phase than later. The Smile Solutions Group works with specialist orthodontists who accept direct referrals from Tooth Fairy Centre paediatric dentists, so your child's care stays coordinated and continuous.

This is also the age to investigate if your child snores, grinds their teeth or consistently breathes through their mouth. These patterns can signal underlying airway and jaw development concerns that respond well to early assessment.

9 to 12 years — permanent teeth take over

The remaining primary teeth are progressively replaced by permanent teeth. Second premolars and canines erupt through this stage, and by age 12, most children have 28 permanent teeth in place — wisdom teeth come later. The dental picture is shifting quickly, and staying across it matters.

What you should do:

Seal the twelve-year molars as they erupt — the same fissure sealant protection that mattered so much at age 6 applies equally here. This stage is also the peak window for braces or Invisalign assessment; if orthodontic treatment is indicated, this is often the ideal time to begin. Make sure your child has a properly custom-fitted mouthguard for any contact sport, and start gradually handing over oral hygiene responsibility to them while continuing to check in on technique.

When to see a specialist: If an orthodontic assessment wasn't completed at age 7 to 8, now is the time. Specialist orthodontists within the Smile Solutions Group can assess whether braces, Invisalign or another approach is the right path forward. For children with more complex needs — including jaw surgery planning, impacted teeth or airway concerns — the team at Smile Solutions Melbourne CBD can coordinate care across paediatric dentistry, orthodontics, oral surgery and radiology, all in one location.

13 to 15 years — orthodontic treatment and teenage teeth

All permanent teeth except wisdom teeth are typically in place by this stage. This is the most common period for active orthodontic treatment. Wisdom teeth also begin developing beneath the gum line during ages 13 to 15 — worth monitoring from the outset.

What you should do:

Support your teenager's orthodontic compliance. Wearing elastics, retainers and aligners as directed is what separates a good result from a prolonged treatment course. Invisalign Teen is available for eligible teenagers who prefer a discreet, removable option. Reinforce oral hygiene consistently — braces make thorough cleaning considerably harder, and teenagers aren't always the most diligent brushers. Start a conversation with your dentist about wisdom teeth so you know what to expect and when to act.

When to see a specialist: Active orthodontic treatment with a specialist orthodontist is the norm at this stage, and the orthodontic team within the Smile Solutions Group is well-placed to deliver personalised treatment. For teenagers managing dental anxiety, neurodivergent needs or particularly complex treatment plans, the specialist paediatric dentists at the Tooth Fairy Centre can continue to provide supportive oversight alongside orthodontic treatment.

16 to 18 years — transition to adult dental care

Wisdom teeth may begin erupting during this period, or may be causing concern below the gum line before they surface. Orthodontic treatment is often in its final stages, and your teenager is moving toward independent adult dental care.

What you should do:

Have wisdom teeth professionally assessed at ages 16 to 18. Not all require removal, but early monitoring prevents complications like impaction, infection or damage to the adjacent teeth. If orthodontic treatment is wrapping up, ensure retainers are worn precisely as directed — teeth can shift back faster than most people expect. Establish an adult routine built around six-monthly check-ups and professional cleans.

If your child has been cared for at the Tooth Fairy Centre, the move to adult care within the Smile Solutions Group or Core Dental network is seamless — all records, clinical history and specialist notes are connected, so nothing is lost in the transition.

When to see a specialist: Oral surgeons within the Smile Solutions Group provide comprehensive wisdom tooth assessments and extractions, including surgical removal under sedation or general anaesthesia where needed. For teenagers completing orthodontic treatment, a retention review with their specialist orthodontist is an essential final step.

The Tooth Fairy Centre advantage at every stage

From a baby's first tooth through to a teenager's wisdom teeth, the Tooth Fairy Centre delivers specialist paediatric dental care with a gentle approach across seven locations throughout Melbourne — Caroline Springs, Carrum Downs, Epping, Wyndham (Werribee), Berwick, South Melbourne and Southbank.

When your child needs orthodontics, oral surgery, airway assessment or any other specialist input, the full resources of the Smile Solutions Group are available — more than 25 specialists spanning every dental discipline, with in-house radiology and a dedicated TMD and sleep clinic at the Melbourne CBD flagship practice.

No referral needed. Visit toothfairy.com.au or call your nearest location to book a consultation today.

Eligible children may be bulk billed under the Child Dental Benefits Schedule (CDBS) — a government scheme that may allow eligible children to be bulk billed. Ask us to check your child's eligibility at your next visit.

Last reviewed: 8 June 2026