Canine exposure surgery explained

Canine teeth, also known as cuspids or eye teeth, play a vital role in the alignment and function of our bite. However, in some cases, these teeth do not emerge (erupt) into the mouth as expected. When a canine tooth remains buried in the gum or bone, a surgical procedure known as canine exposure may be recommended to help guide it into place. This article by consultant oral surgeon Ms Catherine Sternberg explains what canine exposure involves, why it is needed, and what patients can expect before and after the procedure.

What is canine exposure?

Canine exposure is a surgical procedure to uncover an impacted canine tooth, usually but not always, in the upper jaw. The term "impacted" means that the tooth has not erupted normally and is trapped beneath the gum and sometimes the bone. This condition most commonly affects the upper canine teeth, which are the last of the front teeth to erupt, typically around the age of 11 to 13.

These teeth are essential for a healthy bite and a balanced appearance, guiding the rest of the teeth into alignment and supporting facial structure. If they do not erupt on their own, timely intervention is important.

When is canine exposure needed?

Canine exposure is often needed when a canine tooth fails to erupt naturally due to overcrowding, unusual tooth positioning, or genetic factors. In some cases, the tooth may be growing sideways or too high in the gum. If left untreated, an impacted canine can lead to problems such as misalignment of adjacent teeth, cyst formation, or resorption of nearby roots.

This procedure is most commonly recommended for teenagers and young adults, particularly during orthodontic treatment. An orthodontist usually identifies the impacted canine during routine X-rays and refers the patient to an oral surgeon for assessment. However, adults may also require the surgery, especially if the issue was not addressed earlier or if orthodontic treatment is being revisited.

What does the surgery entail?

Canine exposure is a routine oral surgery performed under local anaesthetic, intravenous sedation or general anaesthetic depending on the postion of the tooth and the patient’s age and ability to cope with a surgical procedure. The procedure typically takes between 30 to 60 minutes.

The surgeon carefully lifts the gum tissue to access the impacted canine. If necessary, a small amount of bone may be removed to uncover the tooth. Depending on the case, one of two approaches is used:

• Open exposure, where the gum is repositioned or removed to leave the crown of the tooth visible.
• Closed exposure, where a small gold bracket and chain are attached to the tooth before the gum is replaced. This chain is later used by the orthodontist to gently pull the tooth into position over time.

The choice of method depends on the location and depth of the impacted tooth and the preferences of the orthodontist and surgeon.

Aftercare and recovery

Following the surgery, mild swelling, discomfort, and bruising are common but manageable. Patients are advised to take over-the-counter pain relief such as paracetamol or ibuprofen, unless otherwise directed.

It is important to keep the surgical area clean. Saltwater rinses and a soft toothbrush may be recommended to help maintain oral hygiene. In some cases, antibiotics or antiseptic mouthwashes may be prescribed. Eating soft foods and avoiding hot drinks for the first few days will help minimise irritation.

Most patients can return to school or work within a day or two, although strenuous activity should be avoided for several days. A review appointment is usually scheduled within a week or two to monitor healing and coordinate with ongoing orthodontic care.

Long-term outlook

When combined with timely orthodontic treatment, canine exposure surgery is highly successful in guiding the impacted tooth into its proper position. Early diagnosis and treatment offer the best outcomes. In some complex cases, further orthodontic or surgical management may be needed, but these are usually planned as part of a broader treatment strategy.

Patients are encouraged to follow all post-operative and orthodontic advice closely to ensure a smooth recovery and optimal results.