Crown Lengthening in Ashburton

Two reasons we do it

Functional: when decay or a fracture extends below the gumline, there isn’t enough tooth exposed to hold a filling or crown. Reshaping the gum and sometimes a little bone gives the restoration something solid to grip.

Cosmetic: some people have teeth that look short because the gum covers more of them than average — often described as a gummy smile. Recontouring the gumline reveals the natural tooth already there.

What’s involved

When crown lengthening is needed

Common examples: a tooth broken off at the gumline, decay under the edge of an old crown, or front teeth that look short because gum covers more of them than usual.

Without enough tooth above the gum, a crown can’t seal properly. It may come loose or keep the gum inflamed. Crown lengthening creates that space. If gum disease is present, we treat it first (periodontal treatment).

What happens on the day

• Your dentist reviews your X-rays and measurements and confirms the plan with you.
• The area is numbed with local anaesthetic.
• The gum is gently reshaped. If needed, a small amount of bone is smoothed so the gum can settle at the right level.
• Stitches may be placed. Some dissolve and some are removed at a check visit.
• You go home with written aftercare instructions.

The first two weeks

• Eat soft food and chew on the other side for a few days.
• Brush the rest of your mouth as normal. Clean the treated area gently, as your dentist shows you.
• Avoid smoking, which can slow healing.
• Some swelling and light bleeding in the first day or two is common.

Call us on (03) 9885 7588 if bleeding does not stop with gentle pressure, swelling keeps getting worse, or you feel unwell.

Is crown lengthening right for your tooth?

It is not always the answer. If the break goes too far down the root, the tooth may not be worth saving. Removing it and replacing it with an implant or bridge may then be more reliable. Your dentist will compare the options with you.

Crown lengthening is usually done before a new crown or large filling. Some cases are more complex, such as several front teeth or a lot of bone work. These may need a referral to another practitioner. We will tell you if that applies.

More questions about crown lengthening

Will the treated tooth look longer than the others?

It can, especially on a front tooth treated for a break. Your dentist plans the new gumline with your smile in mind. Sometimes the teeth next to it are included so the gumline stays even. You will see the plan before treatment.

Can I go to work the next day?

Many people return to desk work the next day. Avoid hard exercise for a day or two, as it can start bleeding again. If your job is physical, ask your dentist about timing when you book.

Will my tooth be more sensitive afterwards?

Some people notice sensitivity to cold for a few weeks. More of the tooth is exposed, and the root surface can react to temperature. This usually settles. A sensitive toothpaste may help. Read about common causes of sensitive teeth.