Last updated: September 2026
The first question most people ask about braces, after "how much," is "how long." It is a fair question. Committing to orthodontic treatment means months or years of appointments, compliance and patience, and you want to know what you are signing up for before you start.
The honest answer is that it depends on the case. But the factors that determine treatment time are knowable, and your dentist can give you a realistic estimate at the assessment stage.
These ranges cover the majority of cases. Yours may fall outside them depending on the complexity of what needs to happen.
12 to 24 months for most full cases. Mild crowding or spacing may finish closer to 12 months. Cases involving significant bite correction, extractions, or large movements can extend to 24 months or beyond. Metal braces handle the widest range of complexity, which is why their treatment time range is broad.
Similar to metal braces for the same case. The mechanics are identical. Ceramic brackets are slightly larger and fractionally more fragile, which can mean adjustments are approached a little more conservatively, but the difference in treatment time is usually negligible.
6 to 18 months for cases that aligners can treat. Simple spacing or mild crowding may take 6 to 9 months. Moderate cases involving rotations and bite improvement sit closer to 12 to 18 months. Complex cases are not treated with aligners because the biomechanics required exceed what removable trays can deliver.
There is a significant caveat here: aligner treatment time assumes 20 to 22 hours of wear per day. Every hour the trays are out is time the teeth are not being moved. Patients who are diligent about wear finish on time. Patients who are not finish late or need additional trays, which extends both the timeline and the cost.
6 to 9 months, typically. These shorter-course systems focus on aligning the front six to eight teeth, the ones visible when you smile, without attempting to correct the back teeth or the full bite. They are faster because they are doing less. That is not a criticism; for patients whose concern is cosmetic alignment of the smile zone, doing less is doing the right amount.
Our six-month smiles article covers this option in detail.
A tooth that needs to shift 2mm sideways takes less time than one that needs to move 5mm and rotate 30 degrees. Each movement is applied in small increments, and the bone around the tooth needs time to remodel at each step. More movement equals more steps equals more time.
Not all tooth movements are equal. Tipping a crown sideways is relatively fast. Bodily movement (moving the whole tooth, root and all) is slower. Rotating a round tooth like a canine is notoriously difficult because there is less surface area for the force to grip. Vertical movements, pushing a tooth up (intrusion) or pulling it down (extrusion), are among the slowest.
If only the alignment of individual teeth needs fixing, treatment is typically faster. If the way the upper and lower jaws meet (the bite) also needs correction, that adds time and complexity. Bite correction often involves elastics, which the patient needs to wear consistently. Inconsistent elastic wear is one of the most common reasons treatment runs over schedule.
Adolescent bone is actively growing and remodelling, which means teeth move through it more readily. Adult bone is denser and more stable. This does not mean adult treatment takes dramatically longer, but the pace of movement is slightly slower. For students at local schools around Croydon and Ringwood starting braces in their early teens, the biological window works in their favour.
This is the factor the patient controls, and it matters more than most people realise:
If there is not enough room in the jaw for all the teeth to align, one or more teeth may need to be extracted to create space. Closing the extraction gaps adds to treatment time, typically two to six months depending on how large the gaps are and where they sit.
Your dentist gives you an estimate, not a guarantee. Things that can push treatment longer include:
Refinement is worth mentioning specifically. As the teeth approach their final positions, small adjustments are often needed to fine-tune the result. This phase adds a few months but produces a meaningfully better outcome. Rushing the finish to hit a timeline is poor treatment.
The day the braces come off or the last aligner tray goes in the bin is not the end of treatment. It is the start of the retention phase. Without retainers, teeth begin drifting back toward their original positions within weeks. Our retainer article covers this in full, but the short version is: retainers are for life, in some form.
The only way to know how long your treatment would take is to have your teeth assessed. At Divine Dental Care, the orthodontic assessment includes records, a clinical examination, and a discussion of which options suit your case and how long each would take.
We are at 59 Wicklow Ave, Croydon, a short walk from Croydon station. Patients from Ringwood, Bayswater, Mooroolbark, Kilsyth and Heathmont regularly attend the practice. Saturday appointments are available for those who cannot come during the week.
Call (03) 9725 8040 or book online. Our traditional braces and clear aligners pages detail the treatment options available.
Treatment times stated here are general ranges. Your treatment time depends on the specifics of your case. Your dentist will provide an individual estimate at your assessment. This article is general information, not personal dental advice.