Orthodontics' What is the difference between a fixed sedan chair appliance and a movable appliance?

The main difference between movable orthosis and fixed orthosis is that the former can be removed and the latter can't.

These two orthoses have their own advantages and disadvantages. Let me give you a brief introduction.

1. Movable orthotic:

Advantages: 1 The patient can take it off by himself, which is convenient for brushing teeth and can keep the appliance and oral hygiene; 2. It can avoid damaging the periodontal tissue of teeth; 3. It does not affect the appearance, and can be taken off if necessary and worn at night; 4. The orthosis is simple in structure and easy to manufacture.

Disadvantages: 1 The abutment without undercut has relatively poor retention, poor effect and insufficient anchorage; 2. The action force is single, and the tooth movement mode is mostly inclined, which makes the whole movement difficult; 3. Affect pronunciation; 4. There is a foreign body sensation, which is troublesome to take and wear; It is difficult to deal with the remaining gap.

2 Fixtures:

Advantages: 1 Good retention and sufficient anchoring force; 2. It can make most teeth move; 3. The moving direction of teeth can be controlled; 4. Small size is more comfortable; 5. It can correct complex malocclusion; 6. Does not affect pronunciation; 7. The interval between clinical follow-up and afterburner is long; 8. Short-term treatment

Disadvantages: 1 Special attention should be paid to oral hygiene when using fixed appliances; 2. The fixation correction technology is relatively complicated; 3. Because it can't be removed by itself, if the force is too large, it will easily cause periodontal damage.

Whether to adopt fixed orthodontics or active orthodontics requires a comprehensive examination of the teeth before deciding. Don't worry about any adverse effects, return to the clinic on time, follow the doctor's advice and maintain oral hygiene. I believe that your teeth will be healthy and tidy in the near future.

Good luck! ~