Impacted Teeth and Aligners: Can You Pull a Tooth Into Place?

An impacted tooth — one that has failed to emerge fully into its correct position in the dental arch — is a surprisingly common finding in adult dental assessments. Whether it's a canine sitting high in the palate, a premolar wedged beneath a neighbouring tooth, or a wisdom tooth trapped at an angle, impaction raises understandable questions about treatment options. One question that comes up increasingly is whether clear aligners can be used to help guide impacted teeth into place, particularly as aligner technology continues to advance.

The relationship between impacted teeth and aligners is a nuanced one. In certain carefully selected cases, orthodontic treatment — including aligners — may play a supporting role in guiding a partially impacted tooth into the arch. However, the process is rarely as simple as snapping in a tray and waiting for the tooth to move. Impacted teeth often require a combined approach involving surgical exposure, orthodontic forces, and careful clinical planning.

This article explains what tooth impaction is, why it happens, how it's typically managed, and where aligners may — or may not — fit into the treatment picture. A professional clinical assessment is always essential for determining the most appropriate approach for any individual case.

Can Clear Aligners Move an Impacted Tooth Into Place?

Can aligners fix an impacted tooth?

In some cases, clear aligners may assist with guiding a partially impacted tooth into the dental arch, but they cannot do so alone. Impacted teeth typically require surgical exposure first — a minor procedure to uncover the tooth and bond an attachment to it — followed by orthodontic forces to guide it into position. Whether aligners or fixed braces are used for this orthodontic phase depends on the tooth's position, the severity of the impaction, and clinical assessment by a specialist.

What Is an Impacted Tooth?

An impacted tooth is one that has not emerged — or has only partially emerged — through the gum into its expected position in the dental arch. Rather than erupting normally alongside the other teeth, an impacted tooth remains fully or partially trapped within the jawbone or beneath the gum tissue.

Fully Impacted vs Partially Impacted

A fully impacted tooth is entirely enclosed within the bone or soft tissue, with no visible portion in the mouth. A partially impacted tooth has broken through the gum to some extent but hasn't reached its correct position — it may be visible but tilted, rotated, or stuck against an adjacent tooth.

Which Teeth Are Most Commonly Impacted?

Wisdom teeth (third molars) are the most frequently impacted teeth, but upper canines are the second most common — and are often the teeth patients ask about in the context of orthodontic treatment, because canines play an important role in both function and appearance. Premolars, second molars, and occasionally central incisors can also become impacted, though less frequently.

The prevalence of impacted upper canines is estimated at around 2 to 3 per cent of the population, making it a relatively common clinical finding that dental professionals manage regularly.

Why Do Teeth Become Impacted?

Understanding the causes of impaction helps explain why treatment approaches vary from patient to patient.

Crowding and Space Deficiency

The most common reason for impaction is insufficient space in the dental arch. If the jaw is too small to accommodate all the teeth, or if the teeth themselves are larger than average relative to the jaw size, some teeth may not have enough room to erupt into their correct positions. They become blocked by neighbouring teeth and remain trapped beneath the gum or within the bone.

Abnormal Tooth Position

Sometimes a developing tooth takes an unusual path during its growth, angling towards the roof of the mouth, towards the lip, or sideways into an adjacent tooth root. This misdirection can prevent it from erupting normally, even if there appears to be adequate space in the arch. The reasons for this misdirection aren't always clear, but genetic factors, the early loss of baby teeth, and the presence of extra teeth (supernumerary teeth) can all play a role.

Physical Obstruction

Occasionally, a cyst, an extra tooth, or dense bone tissue may physically block the eruption path of a developing tooth. In these situations, the obstruction needs to be identified through imaging — typically radiographs or a CBCT (cone beam computed tomography) scan — before a treatment plan can be developed.

The Clinical Science Behind Moving Impacted Teeth

Moving an impacted tooth into the dental arch is a well-established clinical procedure, but it involves different biological considerations compared to standard orthodontic tooth movement.

Eruption vs Orthodontic Traction

Under normal circumstances, teeth erupt into the mouth through a natural biological process involving the breakdown of bone and tissue above the developing tooth. When this process fails — resulting in impaction — the tooth needs external help to reach the surface. This is where orthodontic traction comes in.

Traction involves bonding a small bracket or attachment directly to the impacted tooth (after it has been surgically exposed) and then applying a gentle, sustained pulling force to guide it along a planned path into the arch. This force stimulates the same bone remodelling process that underlies all orthodontic treatment: osteoclasts break down bone in the direction of movement, whilst osteoblasts build new bone behind the tooth as it moves.

The Importance of Direction and Force Control

Moving an impacted tooth is considerably more complex than moving a tooth that's already in the arch. The direction of force must be carefully controlled to avoid damaging the roots of neighbouring teeth, and the magnitude of force must be gentle enough to prevent root resorption (shortening of the root) in both the impacted tooth and its neighbours. This level of control requires detailed treatment planning, typically including 3D imaging to map the exact position of the impacted tooth relative to surrounding structures.

How Impacted Teeth Are Typically Treated

The treatment of an impacted tooth usually involves a coordinated approach between a dental surgeon and an orthodontist.

Step One — Clinical and Radiographic Assessment

The first step is always a thorough examination, including detailed imaging. Radiographs and, increasingly, CBCT scans provide a three-dimensional view of the impacted tooth's position, its relationship to adjacent tooth roots, and the amount of bone covering it. This information is essential for planning the surgical approach and the direction of orthodontic traction.

Step Two — Surgical Exposure

A minor surgical procedure is performed to expose the crown of the impacted tooth. This is typically carried out under local anaesthetic and involves carefully lifting a flap of gum tissue and, if necessary, removing a small amount of bone to reveal the tooth surface. A small orthodontic bracket or button is then bonded directly to the exposed tooth, and a fine wire or elastic chain is attached to provide the initial traction force.

Step Three — Orthodontic Guidance

Over a period of weeks to months, gentle orthodontic forces are applied to the attachment on the impacted tooth, gradually guiding it through the bone and gum tissue into its correct position in the dental arch. This phase requires regular monitoring and adjustment to ensure the tooth is moving along the planned path without complications.

Step Four — Final Alignment

Once the impacted tooth has erupted into the arch, it may still need fine-tuning — rotation, tilting, or positioning adjustments — to sit correctly alongside the adjacent teeth. This final alignment phase is where clear aligners may play a more prominent role, depending on the complexity of the remaining movements.

Where Do Aligners Fit Into the Picture?

The role of aligners in managing impacted teeth is an area of ongoing development, and it's important to have realistic expectations about what they can and cannot achieve.

What Aligners Can Do

For mildly impacted or partially erupted teeth — particularly those that have already broken through the gum but are in the wrong position — aligners may be able to guide the tooth into better alignment, especially if the remaining movement is primarily within the arch rather than through bone. Aligners can also be used effectively in the later stages of treatment, after an impacted tooth has been surgically exposed and brought into the arch using other orthodontic methods.

Additionally, aligners can create space in a crowded arch to allow an impacted tooth room to be guided into position. By moving the surrounding teeth apart, aligners facilitate the eruption process and provide a destination for the impacted tooth to move towards.

What Aligners Cannot Do

Aligners cannot apply the type of directed, three-dimensional traction force needed to pull a fully impacted tooth through bone. They work by applying forces to the visible crowns of erupted teeth, and an impacted tooth that is entirely beneath the gum offers no surface for an aligner to grip. In these situations, fixed orthodontic appliances — such as brackets and wires — are typically needed for the traction phase, as they can deliver more precise, multi-directional forces and provide a rigid anchorage system.

Combined Treatment Approaches

Many contemporary treatment plans use a combined approach: fixed appliances for the initial traction of the impacted tooth, followed by a transition to clear aligners for the final alignment and finishing phase. This gives patients the benefit of the precision control needed for traction alongside the comfort and aesthetics of aligners for the later stages of treatment.

When Professional Assessment Is Important

Impacted teeth are not always symptomatic, and many are discovered incidentally during routine dental radiographs. However, there are situations where seeking assessment is particularly advisable:

• A baby tooth remains in place well past the expected age of loss, which may indicate that the permanent tooth behind it is impacted
• Swelling, tenderness, or a visible lump in the gum — particularly in the roof of the mouth or above the canine area — that could indicate an impacted tooth pressing against the tissue
• Pain or pressure in the jaw that doesn't have an obvious cause
• A gap in the dental arch where a tooth should be but hasn't appeared
• Changes in the position of adjacent teeth, which may be shifting due to pressure from an impacted tooth beneath the surface

Early identification and assessment of impacted teeth generally leads to better treatment outcomes. The younger the patient is when an impaction is identified, the more straightforward the treatment tends to be — though successful management is certainly possible in adults as well.

Your dental professional can assess the situation with appropriate imaging and, if needed, refer you to a specialist for a dental implant consultation or orthodontic opinion to discuss the full range of treatment options.

Maintaining Oral Health Around Impacted Teeth

Whether you're awaiting treatment for an impacted tooth or managing the situation conservatively, good oral hygiene around the affected area is important.

Partially Erupted Teeth

Partially impacted teeth are particularly susceptible to decay and gum problems because the gum tissue around them often forms a pocket that traps food debris and bacteria. This can lead to localised infection (pericoronitis), inflammation, and decay on the impacted tooth or its neighbour. Careful brushing with a small-headed toothbrush and regular use of interdental cleaning aids help keep these areas as clean as possible.

During Treatment

If you're undergoing orthodontic treatment to guide an impacted tooth into position, maintaining excellent oral hygiene is essential. The surgical site needs to heal cleanly, and the surrounding teeth must remain healthy throughout the treatment period. Regular professional cleaning appointments support this process and allow your dental team to monitor the area as the tooth moves.

After Treatment

Once an impacted tooth has been successfully brought into the arch, it should be treated with the same care as any other tooth — regular brushing, interdental cleaning, and routine dental examinations. Retainer wear is particularly important after orthodontic treatment involving impacted teeth, as these teeth may have a greater tendency to drift if not maintained in their corrected positions.

Key Points to Remember

• An impacted tooth is one that has failed to erupt fully into its correct position in the dental arch
• Treatment typically requires surgical exposure followed by orthodontic traction — aligners alone cannot pull a fully impacted tooth through bone
• Clear aligners may play a role in creating space for impacted teeth or in the final alignment phase after traction
• Upper canines are the most commonly impacted teeth after wisdom teeth, affecting around 2 to 3 per cent of the population
• Early identification through routine dental imaging generally leads to more straightforward treatment
• A combined approach using fixed appliances for traction and aligners for finishing is increasingly common

Frequently Asked Questions

Can impacted canines be treated with clear aligners alone?

In most cases, fully impacted canines cannot be treated with aligners alone. The tooth typically needs to be surgically exposed so that an orthodontic attachment can be bonded to it, and fixed appliances are usually required to apply the controlled traction needed to guide it through the bone into the arch. However, aligners may be used in the later stages of treatment for final positioning once the canine has erupted, or to create space in the arch beforehand. Your orthodontist will recommend the most appropriate approach following clinical assessment and imaging.

How long does it take to move an impacted tooth into place?

The timeline varies considerably depending on the severity of the impaction, the tooth's position, and the distance it needs to travel. Moving an impacted canine into the arch typically takes between six and eighteen months from the point of surgical exposure, though the overall orthodontic treatment — including any preliminary space creation and final alignment — may take longer. Progress is monitored through regular appointments, and the treatment plan is adjusted as needed based on how the tooth responds. Your dental professional will provide a more specific estimate after assessing your individual case.

Is surgical exposure of an impacted tooth painful?

Surgical exposure is a minor procedure usually performed under local anaesthetic, so you should not feel pain during the procedure itself. Some discomfort, swelling, and tenderness in the area are normal for a few days afterwards and can typically be managed with over-the-counter pain relief and cold compresses. Most patients find the recovery straightforward, with any soreness subsiding within a week. Your dental surgeon will provide specific aftercare instructions and will be available to address any concerns during the healing period.

What happens if an impacted tooth is left untreated?

An impacted tooth that is left in place without treatment may remain entirely asymptomatic for years, particularly if it's positioned away from adjacent tooth roots and surrounded by healthy bone. However, potential complications can include cyst formation around the impacted tooth, resorption (damage) to the roots of neighbouring teeth, infection if the tooth is partially erupted, and shifting of adjacent teeth. Regular monitoring through dental imaging allows your dental professional to assess whether the impacted tooth is stable or whether intervention is recommended.

Are impacted teeth more common in adults or children?

Impacted teeth can be identified at any age, but they are most commonly diagnosed during the teenage years when the permanent teeth are expected to have erupted. Upper canines typically erupt between the ages of 11 and 13, and if they haven't appeared by this age, radiographic investigation is usually recommended. However, many adults discover impacted teeth later in life — sometimes incidentally during routine dental imaging. Treatment in adults is certainly possible, though it may take longer and involve more complex planning than in younger patients.

Can an impacted wisdom tooth be moved with aligners?

Impacted wisdom teeth are not typically treated with orthodontic movement — whether aligners or fixed braces. In most cases, impacted wisdom teeth that are causing problems (pain, infection, damage to adjacent teeth) are managed through extraction rather than repositioning. This is because wisdom teeth sit at the very back of the arch where they serve limited functional purpose and where orthodontic access is most difficult. If you have concerns about an impacted wisdom tooth, your dental professional can assess the situation and recommend the most appropriate management approach.

Conclusion

The question of whether aligners can pull an impacted tooth into place doesn't have a simple yes or no answer — it depends on the type and severity of the impaction, the tooth involved, and the broader clinical picture. For fully impacted teeth, surgical exposure and fixed orthodontic traction remain the standard approach, with aligners potentially playing a valuable role in creating space beforehand or in the final alignment phase afterwards. For partially erupted teeth with milder impaction, aligners may have a more direct role in guiding the tooth into its correct position.

What's clear is that managing impacted teeth and aligners requires careful clinical planning, detailed imaging, and often a collaborative approach between different dental specialists. Every case is different, and the treatment that's right for one patient may not be appropriate for another.

If you're aware of a missing tooth, a retained baby tooth, or symptoms that may suggest an impaction, seeking a professional assessment is the most important step. Your dental team can evaluate the situation thoroughly and explain which treatment options are realistic for your specific circumstances.

Dental symptoms and treatment options should always be assessed individually during a clinical examination.

Disclaimer:

This article is intended for general educational purposes only and does not constitute personalised dental advice. Individual diagnosis and treatment recommendations require a clinical examination by a qualified dental professional.

Written Date: 2 April 2026

Next Review Due: 2 April 2027