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Related Experiment Videos

Intermediate cementum. Development, structure, composition, and potential functions

J W Harrison1, R S Roda

  • 1Baylor College of Dentistry, Department of Restorative Sciences, Dallas, Tex., USA.

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
|May 1, 1995
PubMed
Summary

Intermediate cementum, a calcified tissue layer in mammalian teeth, is likely derived from Hertwig's epithelial root sheath, not cementum or dentin. This layer may play a role in tooth wound healing.

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Area of Science:

  • Dental Histology
  • Developmental Biology
  • Biomineralization

Background:

  • A highly calcified tissue layer, termed intermediate cementum, exists at the cementum-dentin junction in mammalian teeth.
  • Its origin is debated, with evidence suggesting it is not derived from cementogenesis or dentinogenesis.

Purpose of the Study:

  • To review the available evidence on the origin, structure, and composition of intermediate cementum.
  • To assess the potential functions of this layer, including its possible role in wound healing.

Main Methods:

  • Review of existing scientific literature on intermediate cementum.
  • Analysis of studies on human and nonhuman primate teeth.

Main Results:

  • Intermediate cementum contains enamel matrix proteins.

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  • Evidence suggests it originates from Hertwig's epithelial root sheath.
  • Its precise function remains under investigation, with a potential role in wound healing.

    • Conclusions:

    • Intermediate cementum is a distinct dental tissue with a unique origin.
    • Further research is needed to fully elucidate its structure, composition, and functional significance, particularly in regenerative processes.