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Related Experiment Videos

Ciliated epithelium-lined radicular cysts.

P N Ramachandran Nair1, Gion Pajarola, Hans-Ulrich Luder

  • 1Department of Oral Structural Biology, Center of Dental and Oral Medicine, University of Zurich, Switzerland.

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
|October 11, 2002
PubMed
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Three cases of ciliated epithelium-lined radicular cysts were found in apical periodontitis lesions. One cyst also showed Actinomyces infection, highlighting potential spread to the maxillary sinus.

Area of Science:

  • Oral pathology
  • Dental histology
  • Microbiology

Background:

  • Radicular cysts are common sequelae of apical periodontitis.
  • Epithelial lining of these cysts typically includes stratified squamous epithelium.

Purpose of the Study:

  • To identify and characterize ciliated epithelium-lined radicular cysts.
  • To investigate the presence of Actinomyces in periapical cysts.

Main Methods:

  • Review of 256 serial sections of apical periodontitis lesions.
  • Examination of identified cysts using transmission electron microscopy.
  • Histopathological analysis for epithelial types and microbial presence.

Main Results:

  • Three ciliated columnar epithelium-lined cysts were identified among 256 lesions.

Related Experiment Videos

  • Two lesions were periapical pocket cysts, one was a true cyst.
  • One pocket cyst contained Actinomyces colonies; all affected maxillary premolars.

    • Conclusions:

    • Ciliated epithelium in radicular cysts may originate from the maxillary sinus.
    • Stratified squamous epithelium may arise from cell rests of Malassez.
    • Infection in pocket cysts, especially in posterior teeth, may spread to the maxillary sinus.