Orthodontic braces are clinical devices used to correct irregularities in the position of the teeth and the alignment of the jaw. By applying continuous, controlled pressure over an extended period, braces gradually shift teeth into a more functional and aesthetically balanced position. This process involves a biological response within the bone and connective tissues of the jaw, allowing for the restructuring of the dental arch. In the United Kingdom, orthodontic treatment is a common procedure for both children and adults, aimed at improving oral health, ease of cleaning, and the overall efficiency of the biting mechanism.
What We’ll Discuss in This Article
- The biological process of tooth movement known as bone remodelling.
- The primary components of traditional fixed braces.
- Different types of orthodontic appliances available in the UK.
- The role of the orthodontist in adjusting and monitoring treatment.
- How braces address issues like overcrowding, gaps, and bite misalignment.
- The importance of the retention phase after braces are removed.
The Mechanics of Orthodontic Tooth Movement
Braces work by exerting constant, gentle pressure on the teeth, which triggers a biological process called bone remodelling. When a bracket and wire apply force to a tooth, the periodontal ligament the connective tissue that anchors the tooth to the jawbone is compressed on one side and stretched on the other. This mechanical stress signals the body to send specialised cells to the area to break down and rebuild bone tissue.
On the side where the tooth is being pushed, cells called osteoclasts break down the bone to create space for the tooth to move. On the side where the ligament is stretched, cells called osteoblasts build new bone to fill the gap and stabilise the tooth in its new position. This complex physiological response ensures that as teeth move, the supporting structure of the jaw remains intact and healthy. The NHS provides information on why orthodontics may be necessary to correct bite issues and improve long-term dental health.
Components of Fixed Orthodontic Braces
Traditional fixed braces consist of several precise components that work together to guide tooth movement. Each part plays a specific role in transmitting the necessary forces from the appliance to the dental structure.
- Brackets: Small metal or ceramic squares that are bonded directly to the surface of each tooth using a dental adhesive. They act as anchors for the arch wire.
- Arch wire: A thin metal wire that runs through the brackets. It serves as the primary source of pressure; its shape and tension guide the direction of tooth movement.
- Ligatures (O-rings): Small elastic bands that secure the arch wire into the brackets. These are often replaced and tightened during regular adjustment appointments.
- Bands: Metal rings usually placed around the back molars to provide a strong anchor for the rest of the appliance.
- Elastics: In some cases, larger rubber bands are used to connect the upper and lower braces to correct bite alignment issues.
Types of Braces Available in the UK
There are several types of orthodontic appliances used today, ranging from traditional metal sets to more discreet options. The choice of appliance depends on the severity of the alignment issue, clinical requirements, and patient preference.
| Type of Brace | Characteristics | Common Usage |
| Metal Fixed | Highly durable, visible, most common | Complex alignment and bite issues |
| Ceramic Fixed | Tooth-coloured or clear brackets, less visible | Adult patients seeking a discreet look |
| Lingual Braces | Fixed to the back (inner) surface of teeth | Complete concealment of the appliance |
| Clear Aligners | Removable, transparent plastic trays | Minor to moderate crowding or spacing |
| Functional Appliances | Removable, used to correct jaw position | Growing children with significant overbites |
The Process of Orthodontic Adjustments
Orthodontic treatment is a phased process that requires regular appointments for adjustments, typically every six to eight weeks. During these visits, the orthodontist may change the arch wire for a thicker or differently shaped one to continue the progression of tooth movement. As the teeth shift, the original wire loses its tension, so these adjustments are necessary to maintain the constant pressure required for bone remodelling.
These appointments also allow the clinician to monitor the health of the gums and the progress of the roots. Each adjustment is meticulously planned to move specific teeth in a sequence that ensures the final bite is stable and correctly aligned. While the initial placement and subsequent adjustments may cause temporary discomfort, this is generally a sign that the appliance is effectively applying the necessary force.
Correcting Bite and Jaw Alignment
Braces are not only used for straightening crooked teeth but also for correcting “malocclusions,” or bite misalignments. These include overbites, underbites, crossbites, and open bites. An incorrect bite can lead to uneven wear on the teeth, difficulty chewing, and increased strain on the jaw joints (TMJ).
In cases of bite correction, the orthodontist may use additional components such as springs or elastics to encourage the upper and lower jaws to fit together properly. By aligning the arches, braces ensure that the force of chewing is distributed evenly across all teeth, reducing the risk of fractures and long-term joint pain. UK health guidance emphasizes that properly aligned teeth are easier to clean, reducing the risk of gum disease and decay.
The Retention Phase
Once the active phase of treatment is complete and the braces are removed, the teeth enter the “retention” phase. Because the bone and ligaments have been restructured, the teeth have a natural tendency to drift back toward their original positions. To prevent this, a retainer either a removable plastic tray or a thin wire bonded to the back of the teeth is used to hold them in their new alignment while the bone fully hardens.
Retention is considered a lifelong commitment for most orthodontic patients. Without consistent use of retainers as prescribed by the clinician, the results achieved during the months or years of wearing braces can be lost. Retainers ensure that the investment in orthodontic care provides a permanent improvement to oral function and health.
Conclusion
Braces are sophisticated medical tools that use controlled pressure to move teeth through the biological process of bone remodelling. By utilising brackets, wires, and consistent adjustments, they can correct complex overcrowding and bite issues, leading to improved long-term oral health. Whether using traditional fixed metal braces or modern clear aligners, the goal remains the creation of a functional and stable dental arch. If you experience severe, sudden, or worsening symptoms, call 999 immediately.
How long does treatment with braces usually take?
Most orthodontic treatments last between 18 and 24 months, though the exact duration depends on the complexity of the case and how the individual’s teeth respond to movement.
Do braces hurt when they are put on?
The process of bonding brackets to the teeth is painless, but patients typically experience some soreness and pressure for a few days after the initial fitting and subsequent adjustments.
Can adults get braces or is it only for children?
Adults can successfully undergo orthodontic treatment at any age, provided their teeth and gums are healthy, though the process may take slightly longer than in growing children.
Will I need to have teeth removed for braces?
In cases of severe overcrowding, an orthodontist may recommend the removal of one or more teeth to create enough space for the remaining teeth to be aligned properly.
Can I still play sports with braces?
Yes, but it is highly recommended to wear a professionally fitted mouthguard to protect both the teeth and the orthodontic appliance from impact during contact sports.
How often should I clean my teeth with braces?
You should brush your teeth after every meal to ensure that food particles do not become trapped in the brackets, which can lead to decay and permanent white marks on the teeth.
What happens if a bracket comes loose?
A loose bracket is not usually an emergency, but you should contact your orthodontic clinic to have it re-secured to ensure your treatment stays on track.
Authority Snapshot (E-E-A-T)
This article explains the clinical mechanics of orthodontics and tooth movement, following established UK health standards and NHS guidelines. The content focuses on the biological and structural aspects of braces to provide the public with an accurate understanding of the treatment. This information has been reviewed by Dr. Stefan Petrov to ensure medical accuracy and safety.
