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KMID : 0355620110370050405
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Journal of Korean Association of Oral and Maxillofacial Surgeons
2011 Volume.37 No. 5 p.405 ~ p.414
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Thermally induced bone necrosis during implant surgery
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Cheong Jeong-Kwon
Jo Kyu-Hong
Yoon Kyu-Ho
Park Kwan-Soo
Bae Jung-Ho
You Kyung-Ha
Han Ji-Hoon
Shin Jae-Myung
Baik Jee-Seon
Jeon In-Seong
Cheong Jeong-Kwon
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Abstract
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Thermally induced bone necrosis during implant surgery is a rare phenomenon and a potential contributing factor to implant failure. The frictional heat generated at the time of surgery causes a certain degree of necrosis of the surrounding differentiated and undifferentiated cells. The bone necrosis occurred in the mandible in all three cases, leading to a soft tissue lesion and pain. In each case, radiolucent areas appeared in the middle and apical portions of the implant 4 weeks after surgery. Thermally induced bone necrosis did not improve following systemic antibiotic medication, necessitating surgical treatment. The nonintegrated implants were removed, and meticulous debridement of dead bone and granulation tissue was performed. Then, new implants were implanted along with the placement of autogenous and xenogenic bone covered with a collagen membrane. No further complications occurred after re-operation. The radiolucencies around the new implants gradually resolved entirely, and the soft tissue lesions healed successfully. At 4-5 months after reoperation, implant loading was initiated and the implant-supported restorations have been functioning. The aim of this case report is to present the successful clinical treatment of three cases suspected to be caused by thermally induced bone necrosis after implant drilling.
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KEYWORD
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Osteonecrosis, Heat stress, Dental implants
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