Supernumerary Teeth in Children | Causes, Signs & Treatment
Supernumerary Teeth in Children
When children start losing baby teeth and their adult teeth begin to appear, most parents expect things to follow a familiar pattern. So when a tooth doesn’t fall out on time, or a new one pops up in an unexpected spot, they may start wondering if something is wrong with their child’s dental development. Extra teeth — called supernumerary teeth — are something a kids’ dentist may see in children from time to time. Here’s how they develop and how dentists Brisbane decide when they need attention.
What Are Supernumerary Teeth?
As Dr Ellie Nadian explains, supernumerary teeth are simply extra teeth that develop in addition to the usual set. In some children, the extra tooth appears in the baby-tooth stage; in others, it stays hidden under the gums as an additional adult tooth. These teeth can sit quietly without causing issues, but they can also interrupt the normal path of the permanent teeth if they aren’t noticed early. Identifying them sooner means we can guide the developing adult teeth more predictably and avoid problems that might otherwise show up later.
How Common Extra Teeth Are In Children
Extra teeth in children aren’t something you see every day, but they’re not rare either — roughly one to three in every hundred kids will have at least one. Our Brisbane Paediatric Dentist says, supernumerary teeth tend to show up more often once the first adult teeth start arriving, because that’s when the developing teeth under the gums become easier to spot on X-rays, and any delays are more noticeable. Parents usually notice something around the age of six to eight, when a front tooth takes longer than expected to erupt, or a baby tooth refuses to fall out.
Why Some Children Develop Extra Teeth
A Strong Genetic Influence
According to Dr Roya, a dentist in South Perth, Extra teeth tend to run in families. If a parent or older sibling has had one, it’s not unusual for another child to have the same pattern. It’s simply the way their dental development has been passed down — nothing a parent caused or could have prevented.
An Extra Tooth Bud Develops During Early Growth
When babies are still developing in the womb, a thin strip of tissue starts forming the beginnings of each tooth. Occasionally, that tissue becomes a little more active than needed and creates an extra tooth bud. One small variation at that stage can later show up as an additional tooth.
A Tooth Bud That Splits Into Two
Sometimes a developing tooth divides. If it separates fully, it becomes a second tooth; if it only partly divides, it may create an unusual shape or a small duplicate next to the normal tooth. It’s a tiny change early on that becomes visible years later.
No Obvious Reason at All
Many children with supernumerary teeth have no family history and no other developmental concerns. Tooth formation is a complex process, and occasionally one step takes a slightly different path. Parents often appreciate knowing it doesn’t point to any wider health issue.
Part of a Broader Growth Pattern in a Small Group of Children
In rare cases, extra teeth appear alongside other structural differences noticed by paediatric specialists. When that happens, dentists usually pick it up early and work together with the family to monitor growth.
Types Of Supernumerary Teeth Seen In Young Children
By Shape
Supernumerary teeth can appear in a few different forms. Conical teeth are small and pointed, almost like a tiny peg, and they’re one of the more common shapes seen near the front teeth. Tuberculate teeth are broader with a lumpy, multi-lobed outline and tend to stay trapped under the gums for longer, which is why they often slow down the eruption of nearby adult teeth. Supplemental teeth look like a duplicate of a normal tooth, almost as if an extra copy has appeared where it wasn’t needed.
By Location
Extra teeth can sit in different areas of the mouth. A mesiodens is the most common and appears between the two upper front teeth, often influencing how those adult teeth come through. Some children develop extra teeth in the premolar region, which sits behind the canines; these are usually found on X-rays rather than during everyday brushing. Others may have them in the molar region, though this is much less common in younger children and is typically identified during routine imaging.
Signs Parents May Notice at Home
When a child’s teeth are changing, parents often pick up on small details long before anything feels “wrong.” Extra teeth don’t always show themselves straight away, but there are a few signs at home that tend to nudge parents to ask for a dental check:
Delayed front teeth: When the adult front teeth take longer than expected to appear, especially compared with siblings or classmates, it can hint that something is interrupting their path.
A gap that won’t close: A space between the upper front teeth that stays wide, even as other teeth move into place, sometimes points to a hidden mesiodens.
Baby teeth that linger: If a baby tooth refuses to loosen or fall out when its partner side has already changed over, it suggests the adult tooth underneath might be blocked.
A tooth growing off-course: A tooth that angles forward, backward, or sideways instead of following the usual pattern can signal that an extra tooth is redirecting its path.
Crowding earlier than expected: When teeth start to overlap before most adult teeth have even arrived, an unnoticed extra tooth may be taking up valuable space.
How Dentists Check For Supernumerary Teeth In Children
When a child comes in for an exam, we start with a close look at their bite, the way the baby teeth are spacing out, and whether any adult teeth seem late or off-course. If something doesn’t quite match the usual pattern, we take small X-rays or a panoramic image so we can see what’s happening beneath the gums — that’s often where an extra tooth is hiding. Those images also show us how the nearby adult teeth are forming, which direction they’re heading, and whether anything is blocking their path. Finding an extra tooth early allows us to guide the permanent teeth as they grow, rather than trying to correct bigger issues later on.
Problems Extra Teeth May Cause In Early Childhood
Extra teeth don’t always cause trouble, but when they do, the signs often show up early in childhood as the adult teeth start preparing to erupt. Parents usually notice changes in timing, spacing, or the direction a tooth is growing — small clues that something underneath may be steering the teeth off their usual path.
Delayed eruption: An extra tooth may sit directly in the way of an adult tooth, slowing it down or stopping it from coming through on time.
Misplaced eruption: A front tooth may emerge too far forward, behind the line of teeth, or at an unusual angle if a supernumerary tooth alters its path.
Early crowding: Space that should be reserved for adult teeth may be taken up by an extra tooth, leading to crowding earlier than expected.
Hard-to-clean areas: When a tooth grows in an awkward spot, brushing and flossing become tricky, which may increase the chance of decay around those tight areas.
Developing bite issues: An extra tooth in the wrong place may nudge other teeth into positions that affect how the upper and lower teeth meet.
Visible cosmetic concerns: If an extra tooth appears in the mouth, a child may become self-conscious about its look, especially if it catches the light when they smile.
When Extra Teeth Cause No Problems at All
Some extra teeth sit quietly without disrupting anything — they don’t crowd nearby teeth, block an adult tooth, or change the way the bite is developing. In these situations, dentists often prefer to monitor rather than remove them straight away, because unnecessary treatment in a growing child isn’t helpful. Regular reviews let us keep an eye on how the jaw is changing and whether the extra tooth stays harmless as the permanent teeth begin to move into place.
What Happens If Treatment Is Delayed
When treatment for an extra tooth is delayed, the most common issue is that the adult tooth nearby may lose its ideal path and drift into a spot that’s harder to correct later. A delay may also lead to crowding or a tooth that erupts in an awkward position, which sometimes means more involved orthodontic work down the track. In some children, the extra tooth stays harmless for a while before gradually starting to affect spacing, so regular check-ups matter even if everything looks fine at first glance.
Care And Support For Children With Special Needs
As our kids’ dentist for special needs explains, children with sensory, communication, or medical needs often do best when appointments are shaped around what helps them feel safe and prepared. Dr Ellie Nadian, Brisbane special needs dentist, takes the time to adjust the pace, the environment, and the way information is introduced. Familiarisation visits, clear steps, and predictable routines usually help children settle in, and parents often appreciate having space to talk through any decisions without pressure.
Some children benefit from familiarisation appointments or very gentle pacing, while others settle best with support such as laughing gas or, in more complex situations, Sleep Dentistry in Brisbane under General Anaesthesia. According to Brisbane Dental Sleep Clinic, options like Sleep Dentistry Brisbane may be especially helpful for children with severe anxiety or special medical conditions that make routine dental care challenging.
For more information, visit: Brisbane Paediatric Dentist for Special Needs
What Parents Should Remember About Extra Teeth In Children
Extra teeth are simply additional teeth that form alongside the usual set, and many families only discover them when a baby tooth lingers, or an adult tooth is slow to appear. The timing of when they’re found matters because early checks give us the chance to guide the developing permanent teeth before crowding or misdirection sets in. A quick look at the right stage of growth often provides clarity and helps keep a child’s smile on a healthy path.
