Expression of CD44 in previously grafted alveolar bone.

  • Ricardo Ernesto Dueñas-Villamil. Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana. Bogotá, Colombia.
  • Leticia Belén Bernard-Gutiérrez Práctica privada. Guadalajara, México.
  • Diana Susely Hernández-Chavarría Facultad de Odontología, Universidad Francisco Marroquín, Guatemala.
  • Mercedes Olaya-Contreras Facultad de Medicina, Pontificia Universidad Javeriana. Colombia.
  • Nelly Stella Roa-Molina Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana. Bogotá, Colombia.
  • Adriana Rodriguez-Ciodaro Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana. Bogotá, Colombia.


Objetive: To determine the expressions of the bone surface marker CD44 in samples of alveolar bone previously regenerated with allograft, xenograft, and mixed, using the technique of guided bone regeneration. Material and Methods: This exploratory study was approved by the institutional research and ethics committee. By means of intentional sampling and after obtaining informed consent for tissue donation, 20 samples of alveolar bone previously regenerated with guided bone regeneration therapy with particulate bone graft and membrane were taken during implant placement. The samples were stained with hematoxylin-eosin for histological analysis, and by immunohistochemistry for the detection of CD44. Results: Sections with hematoxylin-eosin showed bone tissue with the presence of osteoid matrix and mature bone matrix of usual appearance. Of the CD44+ samples, 80% were allograft and 20% xenograft. The samples with allograft-xenograft were negative. There were no differences in the intensity of CD44 expression between the positive samples. The marker was expressed in osteocytes, stromal cells, mononuclear infiltrate, and some histiocytes. Eighty percent of the CD44+ samples and 100% of the samples in which 60 or more cells were labelled corresponded to allografts (p=0.000). A total of 67% of the samples from the anterior sector, and 40% from the posterior sector were CD44+ (p=0.689). Conclusion: This study shows for the first time that guided bone regeneration using allografts is more efficient for the generation of mature bone determined by the expression of CD44, compared to the use of xenografts and mixed allograft-xenograft, regardless of the regenerated anatomical area.

Author Biography

Ricardo Ernesto Dueñas-Villamil., Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana. Bogotá, Colombia.
Interim Editor -in- Chief


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How to Cite
DUEÑAS-VILLAMIL., Ricardo Ernesto et al. Expression of CD44 in previously grafted alveolar bone.. Journal of Oral Research, [S.l.], v. 9, n. 6, p. 449-456, jan. 2021. ISSN 0719-2479. Available at: <>. Date accessed: 27 feb. 2021. doi: