Despite its name, crown lengthening does not actually make your teeth longer. Instead, it removes a small amount of gum tissue to expose more of the natural tooth structure beneath.
This guide covers what the procedure involves, when it's recommended, and what recovery looks like.
What is crown lengthening?
During crown lengthening, a dental specialist (typically a periodontist or an oral surgeon) carefully adjusts the gum tissue around one or more teeth. This exposes a greater portion of the tooth's natural structure, either to improve its appearance or to make it easier to carry out restorative dental work.
The procedure is usually performed under local anaesthesia and takes approximately 60 to 90 minutes, depending on the number of teeth involved and the complexity of the case.
Why do people get crown lengthening?
There are two broad reasons a dentist might recommend crown lengthening: cosmetic and functional. In some cases, the same procedure addresses both at once.
To correct a gummy smile
A gummy smile occurs when an excess of gum tissue covers the teeth, making them appear shorter than they are. This is often influenced by genetics, tooth eruption patterns, or the way the upper lip moves when smiling.
Crown lengthening can address this by removing the excess tissue and reshaping the gumline to reveal more of the tooth's natural surface. The result is a more balanced ratio of tooth to gum, which can make the smile appear more symmetrical.
Crown lengthening for cosmetic reasons can also serve as a preparatory step before other treatments, such as dental veneers or crowns, where a more exposed tooth surface is needed to ensure a good fit.
To support a dental crown or restoration
When a tooth is broken, heavily decayed, or has a filling that extends below the gumline, there may not be enough tooth structure visible above the tissue for a dental crown or bridge to anchor securely. In these situations, crown lengthening creates the necessary space.
By exposing more of the tooth and adjusting the surrounding bone where required, the procedure allows a restoration to fit properly and function well over time. It can also improve the relationship between the tooth and the surrounding gum tissue, potentially reducing the risk of irritation or infection around the restoration.
If any of the above situations sound familiar, a consultation with a dental specialist can help clarify whether crown lengthening may be an appropriate option for your circumstances.
If you have questions about crown lengthening, request an appointment with Thomson Medical to explore your options and make an informed decision at your own pace.
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The crown lengthening procedure: step-by-step
Preparing for the procedure
Before crown lengthening, your dentist will typically recommend a periodontal consultation to assess your gum health and determine whether you are a suitable candidate. Maintaining good oral hygiene in the lead-up to the procedure – and attending any recommended check-ups – helps ensure you are in the best possible condition beforehand. This is also a good opportunity to ask any questions about what to expect.
What happens during the procedure
Crown lengthening generally follows these steps:
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Local anaesthesia is administered to numb the area.
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Small incisions are made to separate the gum tissue from the teeth.
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The gum tissue is gently retracted to expose the underlying bone.
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Excess gum tissue is removed and, where necessary, the bone is lightly reshaped.
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The tissue is repositioned and sutured into place.
The procedure typically takes between 60 and 90 minutes, though this varies depending on the number of teeth treated and the complexity of your case.
Recovery and aftercare
Some discomfort and swelling in the days following the procedure are normal. Most people find this manageable with over-the-counter pain relief, though your dental team will advise on what is appropriate for your situation.
During the recovery period:
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Follow any prescribed medication schedule as directed.
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Be gentle around the surgical site when cleaning your teeth.
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Stick to soft foods such as yoghurt, scrambled eggs, or soup while the tissue heals.
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Attend all follow-up appointments so your dentist can monitor healing and remove sutures if needed.
General healing timeline:
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First 2–3 days: Main period of discomfort and swelling
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1–2 weeks: Soft tissue begins to heal
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4–6 weeks: Most patients can resume normal oral hygiene routines
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2–3 months: Full healing and tissue stabilisation, after which a permanent restoration can typically be placed
How much does crown lengthening cost in Singapore?
Crown lengthening in Singapore may start from about SGD 500, but actual fees vary by clinic and case complexity. It is worth asking your dentist for a full breakdown of estimated costs before proceeding.
Whether Medisave or CHAS subsidies can be applied to crown lengthening depends on the nature of the procedure (functional versus cosmetic) and your individual circumstances.
What to consider before deciding
Crown lengthening is generally safe and well-tolerated, but there are a few things worth considering before proceeding:
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It is irreversible. Once gum tissue and bone have been removed, they cannot be restored to their original state.
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Temporary sensitivity is common. Teeth may feel more sensitive to temperature or pressure during the healing period.
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Not everyone is suitable. Your overall gum health and the specific condition of the affected tooth will determine whether crown lengthening is the right approach.
When performed by a qualified specialist and followed by appropriate aftercare, crown lengthening can provide lasting results that support both the function and appearance of your teeth.
If you have been advised to consider crown lengthening, or if you have questions about whether it might be right for you, speaking with a dental specialist is a good first step. A periodontal assessment will help clarify your options and what to expect.
If you have questions about crown lengthening, schedule an appointment with Thomson Medical to speak with a dental professional. A consultation gives you the opportunity to discuss your concerns, understand your options, and make an informed decision at your own pace.
FAQ
What is crown lengthening, and when is it recommended?
Crown lengthening is a dental surgical procedure that removes or reshapes gum tissue – and sometimes bone – to expose more of a tooth's surface above the gumline. A dentist may recommend it to correct a gummy smile, to prepare a tooth for a crown or bridge where there is insufficient tooth structure, or to provide better access to treat decay or damage that extends below the gumline.
Is crown lengthening painful, and what can I expect during recovery?
The procedure is carried out under local anaesthesia, so you should not feel pain during the surgery itself. Afterwards, it is normal to experience mild to moderate discomfort and some swelling for a few days. Most patients find this manageable with over-the-counter pain relief. Full healing typically takes two to three months, though many people feel comfortable returning to normal routines within a few weeks.
What is the difference between crown lengthening and a gingivectomy?
A gingivectomy removes excess gum tissue only – it does not involve reshaping the bone. It is commonly used to treat gum disease or correct cosmetic gum concerns and generally involves a simpler procedure with a shorter recovery. Crown lengthening, by contrast, removes both gum tissue and bone to expose more tooth structure and is typically performed where restorative work or significant cosmetic correction is needed.
Can crown lengthening fix a gummy smile permanently?
For most people, the results of crown lengthening are long-lasting, provided the underlying cause of the gummy smile has been addressed. In cases where a hyperactive upper lip is the primary factor, the results of gum reshaping alone may be more limited. Your dental specialist can advise on the most appropriate approach based on your individual anatomy.
What are the main risks or disadvantages of crown lengthening?
As with any surgical procedure, crown lengthening carries some risks, including temporary discomfort, swelling, and tooth sensitivity. There is also a small possibility of minor bleeding, slight asymmetry in gum appearance, or, in rare cases, some root exposure. Most of these effects are temporary and can be managed with proper aftercare. Because the procedure is irreversible, it is important to have a thorough discussion with your dental specialist before proceeding.
The information provided is intended for general guidance only and should not be considered medical advice. For personalised recommendations and tailored advice based on your unique situations, please consult a specialist at Thomson Medical. Request an appointment with Thomson Medical today.