What Is a Leong's Premolar?
A Leong's premolar is a developmental variation in which a small extra cusp or tubercle forms in the centre of the biting surface of a premolar.
It looks like a tiny bump between the two normal cusps of the tooth, and it usually appears on the lower premolars, often on both sides of the mouth.​
How We Manage a Leong's Premolar
Prevention with Reinforcement
If a Leong's premolar is spotted before any damage occurs, we can often prevent trouble entirely. The tubercle is reinforced with composite resin, which protects it against the chewing forces that would otherwise wear it down or snap it off.
Pulp Regeneration
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When the tubercle has fractured and the pulp is affected in a tooth that is still developing, pulp regeneration offers a way to save more than just the tooth.
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Root Canal Treatment If the Tooth Is Infected
When infection has taken hold and the pulp has died, root canal treatment is the definitive solution. The canal system is cleaned, disinfected, and sealed under magnification, and the tooth is then restored to full function.
Leong's Premolar Treatment Pricing
Treatment for a Leong's premolar at Sola Dental ranges from $1,000 to $9,500, depending on severity. A tooth caught early that only needs reinforcement sits at the lower end of that range, while an infected tooth requiring regenerative treatment or root canal treatment sits at the higher end.
This pricing structure is exactly why early screening pays off: the sooner a Leong's premolar is found, the simpler and more affordable its management tends to be.
Signs a Leong's Premolar Has Become a Problem
Problems begin after wear or fracture. Parents and patients should watch for:
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Pain or tenderness when biting on a premolar, in a tooth with no visible decay
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Sensitivity to hot or cold that lingers
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Swelling of the gum beside the tooth, or a small pimple like bump that may drain
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A dull ache that comes and goes, sometimes disturbing sleep
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A premolar that looks darker than the surrounding teeth
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A sharp or rough spot on the biting surface where a bump has worn or broken away​
When that happens, the consequences follow a predictable pattern:
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The pulp becomes exposed. Because the pulp horn extends into the tubercle, a fracture or heavy wear can open a direct pathway to the nerve.
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Bacteria reach the nerve. Infection sets in even though the tooth may be completely free of decay, which confuses many parents when their child develops an abscess on a tooth with no cavity.
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The pulp dies. The tooth becomes necrotic, often silently, and infection spreads to the bone around the root tip.
Why Choose Sola Dental for Leong's Premolar Treatment
Dental Surgeon - Aileen Loo
At Sola Dental, every endodontic procedure is carried out under a dental operating microscope, giving us the visibility to work precisely inside delicate, developing roots. Just as importantly, we screen for this condition routinely.
Because it appears so often in patients of Asian descent, we check every young patient's premolars as they erupt, and where a tubercle is found we put a monitoring or prevention plan in place before it ever becomes an emergency.
