Volume 16, Issue 5 pp. 751-761
ARTICLE

Osteonecrosis of the Jaw after Implant Surgery in Patients Treated with Bisphosphonates – A Presentation of Six Consecutive Cases

Yvonne Tam DDS, MS

Yvonne Tam DDS, MS

Associate doctor

Private practice, Vallejo, CA, USA

Search for more papers by this author
Kian Kar DDS, MS

Kian Kar DDS, MS

associate professor

Department of Advanced Periodontics, University of Southern California, Los Angeles, CA, USA

Search for more papers by this author
Hessam Nowzari DDS, PhD

Hessam Nowzari DDS, PhD

principal doctor

Private practice, Beverly Hills, CA, USA

Search for more papers by this author
Hyun-Suk Cha DDS, MSD, PhD

Hyun-Suk Cha DDS, MSD, PhD

associate professor

Department of Prosthodontics, College of Medicine, Asan Medical Center, University of Ulsan, Seoul, Korea

Search for more papers by this author
Kang-Min Ahn DDS, MSD, PhD

Corresponding Author

Kang-Min Ahn DDS, MSD, PhD

associate professor

Department of Oral and Maxillofacial Surgery, College of Medicine, Asan Medical Center, University of Ulsan, Seoul, Korea

Reprint requests: Prof. Kang-Min Ahn, Department of Oral and Maxillofacial Surgery, College of Medicine, Asan Medical Center, University of Ulsan, Seoul, Korea; e-mail: [email protected]Search for more papers by this author
First published: 27 February 2013
Citations: 33

Abstract

Background

Osteonecrosis of the jaws in patients treated with bisphosphonates is mostly associated with intravenous bisphosphonates while the incidence associated with oral bisphosphonates is not significant.

Purpose

The purpose of this paper is to describe a series of cases of jaw osteonecrosis that may be associated with dental implant placement in patients who had taken nitrogen containing bisphosphonates via oral and/or intravenous route.

Patients

Six female patients were treated for osteonecrosis of the jaw after implant placement. An average age was 71.8 ± 6.5 years old and they had a history of bisphosphonate use. Two patients suffered from cancer and the other patients had osteoporosis. Two osteoporosis patients had taken only oral bisphosphonate and the other patients received intravenous bisphosphonates.

Results

Resection of necrotized bone, implant removal, and primary closure were performed in five patients and four patients showed uneventful healing. One patient presented recurrence at the maxilla and underwent further extraction and resection. One patient presented with an exposure of the bone after implant placement was treated with an advanced flap closure, and the implants were preserved.

Conclusion

Unusual jaw necrosis after dental implant surgery might be related with oral and/or intravenous bisphosphonates. Wide resection of necrotic bone, collagen graft, and primary closure are key factors for successful healing.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.