Orthodontic Treatment Timeline

Orthodontic treatment follows a predictable sequence of stages. Knowing what happens at each stage — and how long it typically takes — helps you plan, set realistic expectations, and understand what you are committing to before you start.

The timeline below covers the full journey from initial enquiry to long-term retention. Typical durations are given, but every case is different — your orthodontist will give you a personal estimate based on your specific situation.

Most patients now start by submitting photos online or calling a practice for an initial conversation. Photo-based assessment services allow a qualified UK orthodontist to review your teeth remotely and give an initial indication of suitability and likely costs — before you commit to a consultation fee.

Your orthodontist takes a full set of clinical records at the consultation appointment. This typically includes intraoral and extraoral photographs, a panoramic X-ray (OPG) showing all teeth and roots, and a lateral cephalometric X-ray for bite and jaw analysis. Some practices also take a 3D digital scan (CBCT) for complex cases. The orthodontist reviews the records and discusses your diagnosis, treatment options, expected duration, and total costs.

Orthodontic treatment can only begin once your teeth are in good health. Any decay must be filled, gum disease treated, and hygiene improved before a brace can be fitted. In cases requiring tooth extractions to create space, these are carried out by your general dentist or an oral surgeon and the sites must heal before brace placement. Not everyone needs pre-treatment work — your orthodontist will advise.

For fixed braces, this is called the bond-up appointment. Brackets are bonded to each tooth using dental adhesive and a curing light, and the first archwire is threaded through. For clear aligners, any attachments (small resin bumps) are bonded to the teeth at this appointment, and the first set of trays is provided along with instructions on wear, removal, and care.

This is the longest stage. For braces, you attend adjustment appointments every 6–8 weeks. The orthodontist changes wires, adjusts elastics, and monitors progress at each visit. Wires typically progress from flexible nickel-titanium in early treatment to stiffer stainless steel in later stages. For aligners, you change trays every 1–2 weeks at home and attend progress appointments approximately every 6–12 weeks. Both systems require consistent compliance: with braces, avoiding hard/sticky foods and maintaining hygiene; with aligners, wearing trays for 20–22 hours per day.

In the final phase of active treatment, the orthodontist fine-tunes tooth positions. For braces, this may involve adjusting torque or using specialised detailing wires. For aligners, it commonly means issuing refinement trays — additional aligners to address any teeth that have not fully reached the planned positions. Refinements are common and should be included in the treatment fee; always confirm this before starting.

For braces, this is the debond appointment — brackets are carefully removed with a debonding tool and any adhesive residue is polished from the tooth surfaces. For aligners, this is the final review appointment confirming treatment completion. At both, impressions or 3D scans are taken to make retainers. The transition from active treatment to retention happens at this appointment.

Retention begins immediately after treatment ends. The bone and periodontal fibres around the teeth take time to stabilise in their new positions — particularly in the first 6–12 months after treatment. During this phase, retainer wear is most critical. Most orthodontists recommend wearing removable retainers every night and keeping fixed retainers permanently in place.

The British Orthodontic Society recommends retainer wear for as long as you want to keep your teeth straight. Teeth continue to change throughout life — natural ageing, wisdom teeth, and bone changes can all cause movement over time. Most patients transition to a nightly wear routine and continue indefinitely. Fixed retainers typically last 5–10+ years before needing replacement; removable retainers may need replacing every 2–5 years.