Fixed or removable brace: when to use which
Two designs with different tasks – neither is the better one.
The question is often asked as if one design were simply better. It is not. Fixed and removable appliances have different tasks and are used one after the other in many treatments.
What the removable brace can do
Widen the jaw. Hold space when a milk tooth was lost too early. Tilt individual teeth. And – this is its true field – guide the position of the lower jaw during growth. That is exactly what no fixed brace can do.
What it cannot do
Move a tooth bodily, that is together with its root. Rotate it around its axis. Move it vertically in a controlled way. Where that is needed, the path leads via brackets.
The practical difference
The fixed brace works around the clock, regardless of whether anyone thinks about it. The removable one works 14 to 16 hours a day – if it is worn. With children, this is the point where treatments fail, not the technology.
The typical sequence
In the mixed dentition, first a removable appliance that prepares the jaw. After the change of teeth, a fixed brace that positions the teeth precisely. Then a retainer that holds the result. That is not duplicated effort, but a division of labour.
The essentials at a glance
- Neither design is the better one – they have different tasks and often follow one another.
- The removable brace widens the jaw, holds space and guides the position of the lower jaw during growth.
- Only the fixed brace can move teeth bodily, rotate them or move them vertically.
- The fixed one always works, the removable one only when it is worn. That is where treatments fail, not the technology.
Answered briefly
Frequently asked questions
Only for simple cases. Where individual teeth have to be positioned precisely, there is no way around brackets. A removable brace can, however, prepare the way for the fixed one and thereby shorten it.
Because the two do different things. During growth the jaw can be guided – that is the task of the removable appliance. The precise positioning of the teeth comes afterwards and requires brackets.
Then nothing happens, and the treatment drags on without progress. Raise the issue. A fixed brace is then often the more honest solution than another six months of persuasion.
After the screw is adjusted it presses for a day or two. If it constantly chafes in one spot, it needs to be adjusted – that is not something to endure, it is a reason for an appointment.