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Teeth

Teeth

The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...

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Related Experiment Video

Updated: Jun 9, 2026

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Published on: August 22, 2022

Nonsyndromic multiple mandibular supernumerary premolars: a case report.

Yumiko Kawashita¹, Toshiyuki Saito

¹Department of Oral Health, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan. yumiko-t@nagasaki-u.ac.jp

Journal of Dentistry for Children (Chicago, Ill.)

|September 8, 2010

Summary

Supernumerary teeth, extra teeth, are often asymptomatic. This case report details the diagnosis and surgical treatment of four nonsyndromic mandibular supernumerary premolars in a 13-year-old patient using advanced imaging.

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Area of Science:

Dentistry
Oral and Maxillofacial Surgery
Radiology

Background:

Supernumerary teeth are common dental anomalies, often asymptomatic and detected incidentally.
Radiographic diagnosis is crucial for appropriate management and follow-up.
Early identification prevents complications like impaction or crowding of normal dentition.

Observation:

A 13-year-old patient presented with four nonsyndromic supernumerary premolars in the mandible.
Diagnosis was confirmed using conventional radiography and advanced three-dimensional computerized tomography (3D-CT).
The supernumerary teeth were located within the mandibular premolar region.

Findings:

The case highlights the diagnostic utility of 3D-CT in visualizing complex supernumerary tooth presentations.
Surgical extraction was performed as the treatment modality.
Post-operative follow-up confirmed successful management.

Implications:

This case underscores the importance of thorough radiographic examination for diagnosing supernumerary teeth.
Effective management, including surgical intervention, is vital for preventing malocclusion and other dental issues.
Advanced imaging techniques like 3D-CT improve diagnostic accuracy and treatment planning for dental anomalies.