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BioMed Research International
Volume 2017, Article ID 7269467, 8 pages
Research Article

The Root Membrane Technique: Human Histologic Evidence after Five Years of Function

1Department of Periodontology and Implant Dentistry, College of Dentistry, New York University, New York, NY 10010, USA
2Private Practice, Athens, Greece
3Private Practice, Larissa, Greece
4Division of Periodontology, School of Dentistry, University of Minnesota, Minneapolis, MN 55455, USA
5Rutgers School of Dental Medicine, Newark, NJ 07103, USA
6Hackensack University Medical Center, Hackensack, NJ 07601, USA
7Private Practice, Fort Lee, NJ 07024, USA
8Department of Dental Sciences, Vita and Salute University S. Raffaele, 20132 Milan, Italy
9Department of Oral and Biotechnological Science, University G. D’Annunzio, 66013 Chieti, Italy

Correspondence should be addressed to Miltiadis E. Mitsias; moc.nsm@saistimm

Received 6 August 2017; Accepted 16 November 2017; Published 22 November 2017

Academic Editor: Hassan Maghaireh

Copyright © 2017 Miltiadis E. Mitsias et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. The “root membrane” (RM) is a technique that has become popular among implantologists for placement of immediate implants in the anterior maxilla. Purpose. To present histologic evidence of an immediate implant placed in the human anterior maxilla, according to the RM technique, and retrieved after five years. Methods. A fixture, along with the surrounding tissues, was retrieved from the anterior maxilla of a 68-year-old patient, who had been treated five years earlier with immediate implant placement and RM technique. The specimen was processed for histologic/histomorphometric evaluation. Results. The buccal bone plate was maintained without any resorption; a healthy periodontal ligament was evidenced. The implant showed osseointegration, with a high percentage of bone-to-implant contact (BIC = 76.2%). With regard to the space between the RM and the implant, the apical and medial thirds were filled with compact, mature bone; the coronal third was colonized by noninfiltrated connective tissue. Conclusions. The RM technique appears to be effective in preventing bone resorption of the buccal bone plate of the human anterior maxilla, five years after the placement of an immediate implant.