Orthodontics · Valleyfield and Vaudreuil-Dorion
Crossbite in Valleyfield and Vaudreuil-Dorion: when the upper teeth bite on the inside
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01In brief
Crossbite: should it be corrected early?
Often worth correcting early in children
A crossbite is when some upper teeth sit inside the lower teeth as you close your mouth, at the front or on the side. In children, it is often better to correct it early: the jaw may shift to one side to compensate, and the teeth can wear. In teens and adults, it can also be treated, with braces or sometimes aligners. Evaluation in Valleyfield or Vaudreuil-Dorion: 514-533-3368.
- ClinicsGo Dentiste Valleyfield
785, boulevard Monseigneur-Langlois, Salaberry-de-Valleyfield
Go Dentiste Vaudreuil-Dorion
275, boulevard Harwood, Vaudreuil-Dorion - Phone514-533-3368
- HoursValleyfield: 7 days a week · Vaudreuil-Dorion: Monday to Friday
- EvaluationFrom age 7, no referral needed
- TreatmentBy our general dentists
- OnlineBooking 24/7
02What to know
What to know
Crossbite is one of the situations where the age of treatment matters.
- Anterior or posteriorOne or more front teeth behind the lower teeth (anterior), or side teeth that bite on the inside (posterior).
- A shift of the jawTo close properly, a child sometimes slides their jaw to one side. Over time, this shift can affect growth.
- A narrow palateA palate that is too narrow is a common cause of posterior crossbite. During growth, it can be widened with an appliance.
- Wear and gumsA front tooth in crossbite can wear abnormally and press on the gum of the lower tooth.
Signs to watch for
- An upper front tooth sitting behind the lower teeth
- The chin shifting to one side when the child closes their mouth
- Upper side teeth biting inside the lower teeth
- Visible wear on the edge of a front tooth
- A receding gum on a lower front tooth
Good to know: A crossbite in a child aged 6 to 9 is a good reason to ask for an evaluation, without waiting for the teen years.
New patients · First visit
Your complete checkup, in a single visit.
A 45- to 75-minute visit
- Complete exam service and low-dose X-rays
- Cleaning service, the same day when possible
- Written treatment plan, every cost explained
- Coming as a family? Grouped appointments on request: a single trip
Vaudreuil-Dorion just opened: openings for new patients
03Options
The options by age and type
The plan is set after the exam; some appliances are placed by an orthodontist.
- Child: expansion applianceDuring growth, an appliance can widen the palate to correct a posterior crossbite.
- A single tooth in crossbiteA front tooth caught behind the lower teeth can often be brought forward with a simple appliance or a few brackets.
- Teen or adultBraces or, in some cases, aligners. If the palate is very narrow in an adult, an orthodontist’s opinion is recommended.
04At our clinics
Crossbite at our clinics
The dentist looks at how the teeth close, the position of the chin and the width of the palate, and takes the X-rays needed. The dentist then explains the possible options.
For children, regular exams at our clinics in Valleyfield and Vaudreuil-Dorion make it possible to spot a crossbite early.
Directions to the Valleyfield clinic
Directions to the Vaudreuil-Dorion clinic
Opening hours
| Valleyfield | Vaudreuil-Dorion | |
|---|---|---|
| MondayMon | 8 a.m. – 5 p.m. | 9 a.m. – 4 p.m. |
| TuesdayTue | 8 a.m. – 7 p.m. | 9 a.m. – 4 p.m. |
| WednesdayWed | 8 a.m. – 5 p.m. | 9 a.m. – 4 p.m. |
| ThursdayThu | 8 a.m. – 5 p.m. | 9 a.m. – 4 p.m. |
| FridayFri | 9 a.m. – 2 p.m. | 9 a.m. – 4 p.m. |
| SaturdaySat | 9 a.m. – 2 p.m. | Closed |
| SundaySun | 9 a.m. – 2 p.m. | Closed |
05Related services
Services that may be offered to you
The plan depends on the exam: the dentist explains the options and their costs before starting.
06FAQ
Frequently asked questions: crossbite
Should a crossbite be treated in a young child?
Often, yes, especially if it makes the jaw shift. The palate is easier to widen during growth. The evaluation helps choose the right time.
Can a crossbite correct itself?
Rarely. A front tooth in crossbite or a narrow palate usually needs treatment.
Do aligners correct crossbite?
Some mild cases related to the position of the teeth, yes. A crossbite related to the width of the palate often calls for another type of appliance.
Does an expansion appliance hurt?
Pressure is often felt in the first few days. The dentist or orthodontist explains how to relieve the child’s discomfort.
And in adults?
The position of the teeth can be corrected with orthodontics. If the bone of the palate is involved, an approach with an orthodontist, and sometimes a surgeon, may be discussed.
07See also
Other orthodontic guides
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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.