{"id":658,"date":"2014-07-17T21:22:31","date_gmt":"2014-07-17T21:22:31","guid":{"rendered":"https:\/\/emedicalhub.com\/?p=658"},"modified":"2018-08-06T18:01:59","modified_gmt":"2018-08-06T18:01:59","slug":"supernumerary-teeth-hyperdontia","status":"publish","type":"post","link":"https:\/\/emedicalhub.com\/supernumerary-teeth-hyperdontia\/","title":{"rendered":"Supernumerary Teeth (Hyperdontia)"},"content":{"rendered":"

Definition and What are they ?<\/h2>\n

Supernumerary teeth or hyperdontia are extra teeth that are not supposed to be there.<\/p>\n

These teeth are outside the normal number and position of dentition. It may be single or multiple, unilateral or bilateral, erupted or impacted, and morphologically normal or malformed. One or two supernumeraries occur in 90% of the cases while multiple supernumerary teeth occur in 10%. Their appearance may be isolated or associated with abnormalities and syndromes [1<\/strong>, 2<\/strong>].<\/p>\n

Photos<\/h3>\n

\"Supernumerary<\/p>\n

Picture 1: Supernumerary teeth behind the central incisors.<\/strong>
\nImage Source: supernumeraryteeth.com<\/p>\n

\"Supernumerary<\/p>\n

Picture 2: Supernumerary teeth on lateral incisors.<\/strong>
\nImage Source: supernumeraryteeth.com<\/p>\n

\"Supernumerary<\/p>\n

Picture 3: Supernumerary teeth on the lower jaw.<\/strong>
\nImage Source: drsteakley.com<\/p>\n

\"Dental<\/p>\n

Picture 4: Dental X-ray of Supernumerary Teeth<\/strong>
\nImage Source: wikipedia.org<\/p>\n

\"Multiple<\/p>\n

Picture 5: Multiple Supernumerary Teeth on Orthopantomograph<\/strong>
\nImage Source: intelligentdental.com<\/p>\n

<\/h2>\n

Supernumerary Teeth Numbering<\/a><\/h2>\n

There are different systems around the world that the dentists and orthodontists use in numbering the teeth. Different dentists may use different dental charts.<\/p>\n

What is going to be presented in this article is the one that is proposed to be the standard in numbering supernumerary teeth. Refer to the chart below.<\/p>\n

\"Supernumerary<\/p>\n

Picture 6: Supernumerary Teeth Numbering Chart<\/strong>
\nImage Source: supernumeraryteeth.com<\/p>\n

Before you learn how to number supernumerary teeth, you have to know how to number permanent teeth<\/strong><\/a>.<\/p>\n

As you notice in the chart, each quadrant normally contains 8 teeth. The counting starts on the upper right quadrant from right going left until the 16 permanent teeth are counted. Continue counting the lower teeth going left to right, i.e. from 17 to 32. 32 is the total number of normal permanent teeth.
\nFor supernumerary teeth, it is easy. Just add 50 to all those numbers [3<\/strong>].<\/p>\n

Classification of Hyperdontia<\/h2>\n

Diagnosis for supernumerary teeth can be done clinically or radiographically. Classification is based on the form and location of extra tooth or teeth.<\/p>\n

According to Shape<\/h3>\n

Conical supernumerary teeth are the most common in patients who have already developed permanent teeth. They have a normal root. It usually appears as a mesiodens, meaning they are associated with the central incisors. They may cause displacement of the maxillary central incisors.<\/p>\n

\"Conical<\/p>\n

Picture 7: Conical Supernumerary Tooth<\/strong>
\nImage Source: toothfulness.blogspot.com<\/p>\n

Tuberculate supernumerary teeth resemble the shape of a barrel and they are mostly invaginated. They have abnormal roots and they seldom erupt. They are located on the palatal area of the central incisors and sometimes, its presence delays the eruption of the incisors.<\/p>\n

\"Tuberculate<\/p>\n

Picture 8: Tuberculate Supernumerary Teeth<\/strong>
\nImage Source: identalhub.com<\/p>\n

Supplemental supernumerary teeth are the most common in primary dentition. They almost always erupt. They appear along with the continuity of the alveolar line. The most common location is lateral incisors.<\/p>\n

\"Supplemental<\/p>\n

Picture 9: Supplemental Supernumerary Tooth<\/strong>
\nImage Source: askanorthodontist.com<\/p>\n

Odontome or composite odontoma is the category which is not widely accepted by dentists as a classification of supernumerary teeth because the term depicts a tumor. The mass consists of different types of tissues. There are two subcategories. The first one is complex composite odontoma wherein the dental tissue is not organized. The second one is compound composite odontoma which externally resembles a normal tooth.<\/p>\n

\"Odontome<\/p>\n

Picture 10: Odontome or Composite Odontoma<\/strong>
\nImage Source: orthocj.com<\/p>\n

Molariform supernumerary teeth have a complete root and they resemble the shape of premolars [rajendran, saraf].<\/p>\n

\"Molariform<\/p>\n

Picture 11: Molariform Supernumerary Teeth<\/strong>
\nImage Source: ijds.in<\/p>\n

According to Location<\/h3>\n
    \n
  1. Mesiodens: The supernumerary teeth are located on the upper central incisors. They may be single or multiple, unilateral or bilateral, impacted or erupted, and inverted, horizontal, or vertical.<\/li>\n
  2. Paramolar supernumeraries are located on the lingual or buccal aspects of the maxillary molars.<\/li>\n
  3. Dislomolar supernumeraries are located on the distal aspect of the 3rd molar [1<\/strong>].<\/li>\n<\/ol>\n

    Causes and Prevalence of\u00a0Supernumerary Teeth<\/h2>\n