Peri-Implant Bone Necrosis: Clinical Considerations and Histological Evaluation

Area of Science:

• Oral Surgery
• Dental Implantology
• Pathology

Background:

• Peri-implant bone necrosis (PIBN) is an uncommon but severe complication leading to dental implant failure.
• Etiology of PIBN can be multifactorial and challenging to ascertain.
• Potential causes include excessive bone compression during implant placement or secondary to peri-implantitis.

Purpose of the Study:

• To report on the successful management of peri-implant bone necrosis (PIBN) in a case series.
• To investigate both early and late presentations of PIBN, including those associated with peri-implantitis.

Main Methods:

• A case series of 5 patients with PIBN was analyzed.
• Management involved the removal of failed implants and associated necrotic bone.
• Histopathological evaluation confirmed bone necrosis in two cases, showing nonvital bone fragments and inflammatory infiltrate.

Main Results:

• All 5 cases of PIBN were successfully treated by surgical debridement and implant removal.
• No recurrence of bone necrosis was observed post-treatment.
• Histopathology confirmed characteristic patterns of bone necrosis in biopsy samples.

Conclusions:

• Peri-implant bone necrosis can manifest early after implant placement or delayed due to peri-implantitis.
• Surgical intervention involving removal of necrotic bone and implants offers a successful treatment strategy.
• Understanding the etiology, whether bone overcompression or peri-implantitis, is crucial for managing PIBN.