Tag Archives: leong’s premolar

The Little Devil Horn – part II

In my previous post “The Little Devil Horn,” I showed a case of fractured Dens Evaginatus (DE) that had resulted in pulpal necrosis in an 11 years old girl.  In almost all cases the tubercles fracture off as soon as the teeth come into occlusion.  The resultant pulp exposure goes unnoticed until patient develops pain and symptoms and a combined endodontic-restorative procedures would then be necessary.  Therefore, just observing what does not belong to a proper occlusion is not a good choice.

The endodontic treatment for necrotic teeth with immature roots is either regenerative endodontics or MTA apexogenesis depending on many factors.  The latter was used to treat the case of fractured DE with pulpal necrosis.

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So, what should we do if we face a vital tooth with an intact tubercle?

Some evidence suggest a gradual shaving off the tubercle over a period of few months in order to allow tertiary dentin formation is the treatment of choice.  However, tertiary dentinogenesis may not provide a complete seal of the pulp chamber as this process lays down an irregularly formed dentinal structure.

Another approach would be to remove the tubercle mechanically under RD isolation and to seal off the resultant mechanical exposure, if any, with bonding material. This approach was performed for the same young patient for tooth #3-5.

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Office website: vanendo ,  FaceBook page: @endospecialists


The Little Devil Horn

Dens evaginatus (a.k.a. Leong’s premolar) is an odontogenic developmental anomaly.  This anomaly, an enamel-covered tubercle with an extension of pulp horn in most cases,  occurs primarily in premolars.  Loss of this tuberculated cusp during natural root maturation and development will result in early pulp exposure, pulpal necrosis, periapical disease, and arrested root development. Early diagnosis and management of dens evaginatus is therefore the key factor in preventing premature loss of tooth vitality.

dens evaginatus, leong's premolar


Office website: vanendo ,  FaceBook page: @endospecialists


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