A gap between a baby's primary teeth does not automatically mean it needs closing. Dentition develops. Check-ups monitor this development, while a diastema alone does not justify an appliance or frenulum surgery.
Primary and permanent teeth: avoid early conclusions
The AAPD considers many diastemas in primary and mixed dentition part of development. A gap does not establish that future permanent teeth will have exactly the same positions.
To discuss this clearly with the dentist, identify which teeth have erupted and where the gap is. There is no need to measure it daily or compare your baby's mouth with another child's. A dated photograph can simply explain what you noticed.
What to report at the appointment
Describe your observations: feeding difficulty, discomfort, bleeding, trauma, emerging asymmetry or a change that concerns you. These are issues to describe to the professional; they do not establish a diagnosis remotely.
Paediatric assessment considers the entire dentition and its development, not just the gap between two incisors. The AAPD recommendations emphasise this overall assessment and timing adapted to the situation.
If feeding is difficult, do not assume the gap or visible frenulum is necessarily responsible. Have function and other possible explanations assessed by the professionals caring for your child.
The lip frenulum: why appearance is not enough
The frenulum connects the lip to the gum area. The AAPD does not support intervention based on appearance alone. Any decision requires a specific indication and discussion of the expected benefit.
Before a proposed procedure, ask: which difficulty are we trying to resolve? How was it assessed? Why intervene now? What follow-up is planned? These questions distinguish a functional need from an anticipated aesthetic concern.
A promise to “cut it now to avoid orthodontics later” does not follow from these recommendations. A long-term result cannot be inferred simply from a gap in a baby's teeth.
Thumb sucking, pacifiers and spacing: distinguish the issues
Prolonged thumb or pacifier sucking is associated with some bite abnormalities. This does not automatically attribute a diastema to a habit. Our guide to orthodontic pacifiers presents the evidence and its limitations.
Report habits to the dentist without treating them as wrongdoing. A gradual approach that the child understands and that is discussed with a professional is more useful than buying successive accessories out of worry.
Practical steps for parents
- Note what you observe and any associated difficulties.
- Show the gap to the dentist at follow-up, or contact them sooner if discomfort or a change concerns you.
- Ask whether observation alone is sufficient and which signs should prompt renewed contact.
- If treatment is proposed, clarify its indication and limitations.
Do not use a standard retraining appliance in a baby to try to bring teeth together. The Myoforce appliance is not presented as a treatment for gaps in infants' teeth.
For the broader situation in older children or adults, see our guide to diastema.
Common questions
Will a baby's tooth gap definitely disappear?
A child's development cannot be guaranteed from the presence of a gap. Monitoring dentition allows reassessment.
Is an appliance needed as soon as primary teeth appear?
An isolated gap does not establish an indication. Any need depends on diagnosis, not on a goal of bringing teeth together decided at home.
Sources and review
Guide reviewed on 1 October 2026 by Dr Vladimir Khourda. The references below concern the topics studied; they do not establish the results of a MyoForce product.