Half the class is missing front teeth and your child still has a full set. It is an unsettling comparison, and in most cases there is nothing to fix.
- The starting point for losing baby teeth spreads from five to eight years, so seven with nothing loose is usually no cause for concern.
- Worth checking: past eight with no loose tooth, or a space empty more than six to twelve months while the matching tooth is fully through.
- A child may have lost no baby teeth yet already have the permanent first molar at the back, erupted from around six.
- Telling the causes apart takes an examination and usually a dental X-ray, since nothing below the gum can be judged by eye.
At the parents' meeting every other child seems to have gaps in their smile, while yours is seven with nothing loose at all. The worry is understandable. This article explains when late really counts as delayed, what usually lies behind it, and when to have your child seen.
Is seven with no lost teeth a concern?
Usually not. Six years is an average, nothing more. In practice the starting point spreads from five to eight years, and the pace is strongly influenced by family patterns. If a parent was also late, the child often follows.
One thing worth noting: your child may not have lost a single baby tooth and yet already have the permanent first molar at the very back, which erupts from around six. It is an addition rather than a replacement, so families rarely notice it. Look right to the back of the arch and you may find a permanent tooth already through.
When does it count as delayed?
Two situations are generally considered worth checking:
- Your child is past eight with no baby tooth loose or lost.
- A baby tooth came out more than six to twelve months ago and nothing has appeared in the space, while the matching tooth on the other side is fully through.
The second matters more than the first, because a space left open lets neighbouring teeth drift in and narrow the room for the permanent tooth on its way.
Common causes
- Individual and family variation. This accounts for most cases and needs nothing beyond monitoring.
- A baby tooth whose root does not resorb. Normally the root dissolves so the tooth loosens and falls. Some teeth fuse to the bone instead and hold their place, blocking the permanent tooth.
- A permanent tooth erupting off course or staying buried in the bone rather than coming up in the right place.
- A permanent tooth missing from birth. Some permanent teeth never form, most often the upper lateral incisor and the second premolar. The matching baby tooth may then stay in place for years.
- A baby tooth lost too early. The gum over the space thickens and the permanent tooth needs longer to come through.
- Not enough room on the arch, or more rarely a cyst or benign growth in the path of eruption, or a general condition affecting bone and tooth development.
This list is for orientation, not for self-diagnosis. Telling these causes apart takes an examination and usually an X-ray.
What the dentist will check
A visit usually covers feeling the gum to see whether a permanent tooth sits close to the surface, checking the condition of the remaining baby teeth, and assessing the space available on the arch. When it matters whether a tooth bud exists at all and where it lies, the dentist will ask for a dental X-ray. That is the decisive step, because nothing below the gum can be judged by eye.
Many parents hesitate over X-rays for a child. Dental X-rays use a very low dose and shielding is applied as required. It is reasonable to ask the dentist to explain it before you agree.
Usual courses of action
- Regular monitoring when the tooth buds are all present and simply slow. This is the most common outcome.
- Removing the baby tooth in the way when the permanent tooth is ready but the root has not resorbed.
- Holding the space when a baby tooth was lost far too early, so neighbouring teeth cannot drift in.
- Referral for specialist assessment when the X-ray shows a complicated buried tooth, several missing tooth buds, or a lesion needing separate treatment.
Which course fits depends on the examination and X-ray for that particular child, so comparisons with another family's experience are of limited use.
What parents can do meanwhile
- Keep the remaining baby teeth clean, since they are working longer than usual.
- Do not try to speed a tooth along at home.
- Let your child chew normally rather than cutting every meal small.
- Note the dates: which tooth came out when, so the dentist has something to follow.
Ky Hoa Dental sees children at 266A - 268, 3 Thang 2 Street, Hoa Hung Ward, Ho Chi Minh City, Monday to Saturday. Calling the hotline in advance allows an appointment in a quieter slot, so there is less waiting.
Frequently asked questions
My child is seven with no loose teeth. Should we come in straight away?
There is no urgency. The starting point spreads from five to eight years and is influenced by family patterns. The threshold usually considered worth checking is past eight with nothing loose. That said, a routine check-up is still useful, since the dentist also looks for decay and general condition.
A baby tooth came out long ago and nothing has grown in. What now?
If more than six to twelve months have passed with nothing in the space, while the matching tooth on the other side is fully through, have your child examined. An X-ray may be needed to see whether the permanent tooth bud exists and where it lies.
Will late tooth loss affect the permanent teeth?
Most delays come down to individual variation and leave no lasting effect. The greater concern is a space left open for a long time, which lets neighbouring teeth drift in and narrow the room for the permanent tooth. What is done therefore depends on the underlying cause, which a dentist needs to establish.