Biological width around one- and two-piece implants retrieved from human jaws

Ricardo Judgar, Gabriela Giro, Elton Zenobio, Paulo G. Coelho, Magda Feres, Jose A. Rodrigues, Carlo Mangano, Giovanna Iezzi, Adriano Piattelli, Jamil Awad Shibli

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Abstract

Several histologic studies regarding peri-implant soft tissues and biological width around dental implants have been done in animals. However, these findings in human peri-implant soft tissues are very scarce. Therefore, the aim of this case series was to compare the biological width around unloaded one- and two-piece implants retrieved from human jaws. Eight partially edentulous patients received 2 test implants in the posterior mandible: one-piece (solid implants that comprise implant and abutment in one piece) and two-piece (external hexagon with a healing abutment) implants. After 4 months of healing, the implants and surrounding tissue were removed for histologic analysis. The retrieved implants showed healthy peri-implant bone and exhibited early stages of maturation. Marginal bone loss, gaps, and fibrous tissue were not present around retrieved specimens. The biologic width dimension ranged between 2.55 ± 0.16 and 3.26 ± 0.15 to one- and two-piece implants, respectively (P < 0.05). This difference was influenced by the connective tissue attachment, while sulcus depth and epithelial junction presented the same dimension for both groups (P > 0.05). Within the limits of this study, it could be shown that two-piece implants resulted in the thickening of the connective tissue attachment, resulting in the increase of the biological width, when compared to one-piece implants.

Original languageEnglish (US)
Article number850120
JournalBioMed Research International
Volume2014
DOIs
StatePublished - 2014

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ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)

Cite this

Judgar, R., Giro, G., Zenobio, E., Coelho, P. G., Feres, M., Rodrigues, J. A., Mangano, C., Iezzi, G., Piattelli, A., & Shibli, J. A. (2014). Biological width around one- and two-piece implants retrieved from human jaws. BioMed Research International, 2014, [850120]. https://doi.org/10.1155/2014/850120