Orthodontic info
My child's baby teeth are crowded, or have big spaces between them. Is that normal?
Spacing between baby teeth is generally a good sign, but crowding is not, since the American Association of Orthodontists says crowded baby teeth could be an early sign of something an orthodontist should monitor.
On this page
Baby teeth hold the places of the permanent teeth that follow them, so the gaps between them, or the lack of gaps, say something about the room ahead. The American Association of Orthodontists (AAO) answers both worries directly, and the pages of Carvalho & Roth Orthodontics add the reasons behind them.
Gaps between the baby teeth
Gaps between baby teeth are usually good news. The AAO says that in general, space between baby teeth is a good thing because it "indicates there should be room for permanent teeth to come in." The reason comes from a practice post about permanent teeth that are not coming in: permanent front teeth are wider than the baby teeth they replace, so "there should typically be spaces between all of the front primary teeth." Seeking treatment to close those gaps for looks is the one thing to skip, since the AAO says the purpose of early treatment "is not moving baby teeth to improve their appearance." Very wide spacing is a different matter: the AAO lists excessive spacing among the concerns for which an orthodontist may recommend early treatment. After that, mention the spacing at the first check-up, which the AAO's FAQ entry dated October 2026 recommends when a problem is first recognized and no later than age 7.
Baby teeth that touch, with no gaps
Front baby teeth with no spaces at all can mean less room for the permanent front teeth, which are wider than the baby teeth they replace. A straight row of baby teeth is not proof of enough room, though, because the AAO says, "A child's smile may look fine from the outside even when an orthodontic issue is beginning to develop." The AAO also says some orthodontic concerns are easier to identify before they are obvious at home. A check-up comes next, where the orthodontist can judge the room the permanent teeth will need.
Baby teeth that overlap or crowd
Crowded baby teeth are the case the AAO flags. Asked whether crowded baby teeth are OK, the AAO answers, "No. This could be an early sign of something an orthodontist should monitor." Crowding is teeth without the room to come in straight; the AAO's October 2026 article counts significant crowding among the concerns for which an orthodontist "may recommend early treatment," and the list is printed on the practice's early treatment page. Waiting for growth to make room is not a plan; the AAO says the space available for permanent front teeth will not increase as a child grows, and whether a child's crooked teeth straighten on their own has a page of its own. What follows is the check-up the AAO suggests, after which the orthodontist may watch growth with periodic checks or recommend treatment. When the upper jaw itself is too narrow for the permanent teeth, a palate expander is the AAO's example of a treatment that could widen it; whether care then comes in one phase or two is the orthodontist's call.
A pattern to show the orthodontist, not a diagnosis
None of these patterns is a diagnosis on its own. The AAO's wording is careful: crowding "could be" an early sign, and spacing is good in general, so the exam is where a pattern becomes a finding. At a first consultation, the practice's page says, the initial examination uses digital photos and X-rays to help diagnose current or developing orthodontic problems. If something worries you sooner, the AAO says to check with an orthodontist, and a referral is not required.
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