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Teeth realign in orthodontics : What are the teeth subjected to in orthodontics?
Despite the use of traditional fixed devices (braces), or removable ones with a bar in front of the teeth, or even invisible ‘’Invisalign’’ aligners, we need to apply a form of pressure on the teeth, whatever the necessary form of realignment is. A 25 mg pressure is sufficient.

There is a need for a ligament periodontal compression.
It is during this time frame that the blood flow in the alveolus, where the root of the tooth is located, will be altered.

An inflammatory reaction will then be triggered and will create an alarm signal for the cells that constitute the periodontal ligament. This is the period where the teeth will be in some pain following an orthodontic realignment. A restructuring mechanism is usually initiated in the day that follows the adjustment. As soon as it is triggered, the pain disappears.
The cells that are working are named OSTEOCLASTS (they deconstruct bone tissues), and the OSTEOBLASTS (they restructure it).
They will allow the restructuring of the bone alveolus.
They will perform well if the pressure is light and constant.

It is important to wear the devices on a regular basis. The patients that only wear their devices during nights will not have the desired teeth alignment correction, and their teeth will be in constant pain.

To obtain excellent results without any pain, it is necessary to wear the devices at all time, except during meals. This is why the teeth are more mobile during the treatment, because the periodontal ligament thickens.
After the treatment, there is a stabilization period (with the devices, without moving the teeth), until the ligament takes back its normal form.

Dr. Alain Brault, Orthodontist in Montreal and Mont-Tremblant