Postradiotherapy Dental Implant Insertion Into Bone Grafts Harvested From Nonirradiated Tissue: Case Reports

作者：Kimoto Akira; Shibuya Yasuyuki^*; Kobayashi Masaki; Akashi Masaya; Hasegawa Takumi; Suzuki Hiroaki; Komori Takahide

来源：Implant Dentistry, 2016, 25(5): 715-719.

DOI：10.1097/ID.0000000000000473

• oral cancer
• osteoradionecrosis
• dental implant rehabilitation

Background: Prostheses and dental implants are often used to aid oral rehabilitation after surgery ( with/without radiotherapy) for oral cancer. However, some studies have reported that the insertion of dental implants into irradiated bone results in a higher frequency of implant failure than the insertion of such implants in nonirradiated bone.
Materials and Methods: This report describes the cases of 4 patients with oral cancer who underwent surgery and radiotherapy ( total dose: 50-86 Gy) and then had dental implants inserted within the irradiated area. In each case, an ilium bone graft or a latissimus dorsi myocutaneous flap containing scapular bone was transferred to the dental implant site before the insertion of the implants.
Results: Twenty-three implants were inserted. After loading, 2 implants were lost, and 21 remained stable.
Conclusion: In patients who have undergone radiotherapy for oral cancer, transferring bone grafts harvested from nonirradiated tissue to the irradiated site before implant insertion might help to improve dental implant survival rates.

• 出版日期2016