Orthodontics · Valleyfield and Vaudreuil-Dorion

Baby tooth lost too early in Valleyfield and Vaudreuil-Dorion: is a space maintainer needed?

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01In brief

Baby tooth lost too early: is a space maintainer needed?

Worth assessing after the tooth is lost

When a baby tooth, especially a molar, is lost or removed well before the permanent tooth is ready to come in, the neighbouring teeth can drift into the space and block it. A space maintainer, a small appliance, holds that space until the permanent tooth arrives. It isn’t always needed: it depends on the tooth lost, the child’s age and when the permanent tooth is expected to come in. Evaluation in Valleyfield or Vaudreuil-Dorion: 514-533-3368.

02What to know

What to know

A space maintainer helps prevent a lack of space that would take longer to correct later.

  1. Baby molars matterThey hold the place of the premolars until around ages 10 to 12. Their early loss is the situation where a space maintainer is most often discussed.
  2. Front teeth, less oftenThe early loss of a baby front tooth rarely causes significant space loss; it’s discussed depending on the situation.
  3. X-rays guide the decisionThey show how far along the permanent tooth is. If it is about to come in, a space maintainer often isn’t needed.
  4. Regular follow-upThe appliance is checked at exams, then removed when the permanent tooth starts to come in.

When to mention it to the dentist

  • A baby molar was removed because of a cavity or an abscess
  • A baby tooth came out after a fall
  • A baby tooth comes out much earlier than the one on the other side
  • The neighbouring teeth seem to be moving closer together
  • Your child’s appliance has come loose or broken

Good to know: A space maintainer that has come loose or broken is usually not an emergency, but it should be checked soon: keep it and call the clinic.

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03Options

Three possible decisions

The dentist explains which one suits your child.

  • No applianceThe permanent tooth is about to come in, or the lost tooth is unlikely to cause space loss: we monitor.
  • Space maintainerMost often a band on a neighbouring tooth and a wire that holds the space.
  • Orthodontic evaluationIf space has already been partly lost or other alignment problems are present, a full orthodontic evaluation is recommended.

04At our clinics

Follow-up at our clinics

After a baby tooth is lost or extracted, the dentist assesses the space and, if needed, takes an X-ray to locate the permanent tooth. The dentist explains whether a space maintainer would help, and how it would be placed and followed.

For children under 10, the exam and many dental services are covered by RAMQ (Quebec’s public health insurance plan); ask the clinic what applies to a space maintainer in your situation.

Directions to the Valleyfield clinic

Directions to the Vaudreuil-Dorion clinic

Opening hours

ValleyfieldVaudreuil-Dorion
MondayMon8 a.m. – 5 p.m.9 a.m. – 4 p.m.
TuesdayTue8 a.m. – 7 p.m.9 a.m. – 4 p.m.
WednesdayWed8 a.m. – 5 p.m.9 a.m. – 4 p.m.
ThursdayThu8 a.m. – 5 p.m.9 a.m. – 4 p.m.
FridayFri9 a.m. – 2 p.m.9 a.m. – 4 p.m.
SaturdaySat9 a.m. – 2 p.m.Closed
SundaySun9 a.m. – 2 p.m.Closed
A boy proudly showing his teeth after his visit — Go Dentiste, dentist for children in Valleyfield and Vaudreuil-Dorion

06FAQ

Frequently asked questions: space maintainer

Is a space maintainer always needed?

No. It depends on the tooth lost, the child’s age and when the permanent tooth is due to come in. An X-ray helps decide.

How long is it worn?

Until the permanent tooth starts to come in, which can range from a few months to a few years. It is checked at exams.

Is it uncomfortable for the child?

Most children get used to it within a few days. Very sticky foods, which can loosen it, should be avoided.

What should I do if it comes loose?

Keep it and call the clinic. It’s usually not an emergency, but the space needs to be protected soon.

What if nothing is done?

The neighbouring teeth can drift into the space and block the permanent tooth, which may call for longer orthodontic treatment later.

Have a question about orthodontics? Book an evaluation.

Orthodontic evaluation from age 7 in Valleyfield (7 days a week) and Vaudreuil-Dorion (Monday to Friday). New patients welcome, online booking 24/7.

Content prepared by the Go Dentiste team (Dr Dominic Morel-Maynard, general dentist and owner). Last updated: October 11, 2026. General information for guidance only: only an in-clinic exam can establish a diagnosis and a treatment plan suited to your situation. At Go Dentiste, orthodontic services are offered by general dentists; cases that require it are referred to an orthodontist.