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Histological Analysis of Soft and Hard Tissues in a Periimplantitis Lesion: A Human Case Report

Jung, Soong-Ryong DDS, PhD*; Bashutski, Jill D. DDS, MS; Jandali, Rami DMD, MS; Prasad, Hari BS, MDT§; Rohrer, Michael DDS, MS; Wang, Hom-Lay DDS, MS, PhD

doi: 10.1097/ID.0b013e31824eec0a
Clinical Science and Techniques
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Background: Little is known regarding the histologic hard and soft tissue changes that occur in chronic periimplantitis situations in humans. It is critical to gain an understanding of all aspects of periimplantitis to develop appropriate therapeutic approaches.

Methods: An 83-year-old African American man presented with a fractured implant affected by severe, chronic periimplantitis and surrounded by keratinized gingiva. A trephine biopsy of the implant and surrounding tissues was analyzed histologically.

Results: Histological analysis of the periimplantitis specimen revealed significant inflammatory infiltrate consisting predominantly of lymphocytes and plasma cells. In addition, epithelial migration and bone loss to the apical vent were noted.

Conclusion: This case report documents a single case of periimplantitis that was left untreated for 7 years. The presence of significant keratinized tissue and a smooth surface implant failed to prevent fibrous encapsulation of the implant.

*Codirector, Graduate Prosthodontics Program, John D. Dingell Veterans Affairs Hospital, Detroit, MI; Adjunct Clinical Lecturer, Department of Biologic and Material Science, University of Michigan, School of Dentistry, Ann Arbor, MI.

Clinical Assistant Professor, Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI.

Director, Graduate Prosthodontics Program, John D. Dingell Veterans Affairs Hospital, Detroit, MI; Adjunct Clinical Assistant Professor, Department of Biologic and Material Science, University of Michigan, School of Dentistry, Ann Arbor, MI.

§Assistant Director and Senior Research Scientist, Hard Tissue Research Laboratory at the University of Minnesota School of Dentistry, Minneaplois, MN.

Professor and Director, Division of Oral and Maxillofacial Pathology, School of Dentistry, University of Minnesota and Director of the Hard Tissue Research Laboratory, Minneapolis, MN.

Professor and Director of Graduate Periodontics, Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI.

Reprint requests and correspondence to: Hom-Lay Wang, DDS, MS, PhD, Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 North University Avenue, Ann Arbor, MI 48109-1078, Phone: 734-763-3383, Fax: 734-936-0374. E-mail: homlay@umich.edu

© 2012 Lippincott Williams & Wilkins, Inc.