Orsini Giovanna, Bianchi Andrea E, Vinci Raffaele, Piattelli Adriano
Dental School, University of Chieti, Italy.
Int J Oral Maxillofac Implants. 2003 Jul-Aug;18(4):594-8.
Bone augmentation for implant dentistry has become a necessary procedure for a number of edentulous patients. Calvarial bone grafting constitutes an important tool in achieving maxillary augmentation and sinus elevation. Much effort has been directed toward improving graft survival and volumetric maintenance. The purpose of the present study was to evaluate the histologic results of the calvarial onlay graft for maxillary reconstruction before implant placement. Two patients underwent maxillary augmentation using autogenous calvarial onlay grafts. After a 4-month healing period, biopsies of the augmented regions were performed and implants were placed. The implants were loaded after 5 months and then clinically examined after 15 months of function. Biopsies showed that calvarial onlay grafts were well incorporated into the preexisting bone after a 4-month period. Histologic and histomorphometric findings demonstrated a living bone that showed features characteristic of mature and compact osseous tissue. The restored Implants were stable and osseointegrated after a 15-month period of follow-up. The use of calvarial onlay grafts can be a predictable and successful method to achieve maxillary augmentation, allowing appropriate placement of implants and stable prosthetic restorations.
种植牙的骨增量手术已成为许多无牙患者的必要治疗手段。颅骨骨移植是实现上颌骨增量和鼻窦提升的重要方法。人们为提高移植骨的存活率和维持其体积付出了诸多努力。本研究旨在评估在种植体植入前，用于上颌骨重建的颅骨外置移植骨的组织学结果。两名患者接受了自体颅骨外置移植骨进行上颌骨增量手术。经过4个月的愈合期后，对增量区域进行活检并植入种植体。种植体在5个月后开始负重，并在功能行使15个月后进行临床检查。活检显示，4个月后颅骨外置移植骨已很好地与原有骨融合。组织学和组织形态计量学结果表明，移植骨形成了具有成熟致密骨组织特征的活性骨。经过15个月的随访，修复后的种植体稳定且实现了骨整合。使用颅骨外置移植骨是实现上颌骨增量的一种可预测且成功的方法，能够实现种植体的恰当植入和稳定的修复体修复。
