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Related Experiment Videos

Computerized 3-D reconstruction of two "double teeth"

K Lyroudia1, G Mikrogeorgis, N Nikopoulos

  • 1Department of Dental Pathology, Aristotelian University of Thessaloniki, Greece.

Endodontics & Dental Traumatology
|April 29, 1998
PubMed
Summary

This study used 3D reconstruction to analyze two cases of double teeth, a rare dental malformation. Findings revealed varying degrees of dentin and pulp chamber fusion in these unique tooth formations.

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Area of Science:

  • Dentistry
  • Oral and Maxillofacial Surgery
  • Dental Morphology

Background:

  • Double teeth, a rare dental anomaly, involve the fusion or gemination of two or more teeth.
  • Understanding the complex morphology of these malformations is crucial for diagnosis and treatment planning.

Purpose of the Study:

  • To perform a three-dimensional (3D) reconstruction of the external and internal morphology of two distinct cases of double teeth.
  • To visualize and analyze the anatomical variations in fused dental structures.

Main Methods:

  • Utilized serial cross-sectioning of the dental specimens.
  • Employed digital photography, image digitization, and boundary extraction for each section.
  • Generated 3D surface models using triangulation and photorealistic rendering techniques.

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Main Results:

  • Case 1 (mandibular molar and premolar): Demonstrated fusion of coronal and radicular dentin, along with fused pulp chambers.
  • Case 2 (maxillary molar and supernumerary tooth): Showed fusion of radicular dentin and pulp chambers, but not coronal dentin.

Conclusions:

  • 3D reconstruction provides detailed insights into the complex internal and external anatomy of double teeth.
  • The degree of fusion in double teeth can vary significantly, affecting both dentin and pulp chamber structures.