Kobayashi T, Shingaki S, Nakajima T, Hanada K
First Department of Oral and Maxillofacial Surgery, School of Dentistry, Niigata University, Japan.
J Long Term Eff Med Implants. 1993;3(4):283-94.
The results of chin augmentation by porous hydroxyapatite blocks were evaluated clinically and radiographically in nine patients. Recovery of a satisfactory facial profile was achieved by the procedure, and all patients but one, with removal of the implant because of infection, were satisfied with the results of the surgery. Radiographically, the implants were incorporated into the bony structure of the mandible by deposition of bone at and around the bone-implant interface and ingrowth of bone into pores. Cephalometrically, the procedure was found to provide very stable results, with little change in the position of the implants and no appreciable resorption of the implants and bone. Despite heavy chemotherapy, histologic examination of the removed hydroxyapatite showed the presence of areas with numerous inflammatory cell infiltration and no bone formation. Thus, the procedure is quite useful for chin augmentation, but utmost care should be taken to avoid infection.
对9例采用多孔羟基磷灰石块进行隆颏术的患者进行了临床和影像学评估。通过该手术获得了令人满意的面部轮廓恢复，除1例因感染取出植入物外，所有患者对手术结果均满意。影像学检查显示，通过骨在骨-植入物界面及周围的沉积以及骨长入孔隙，植入物与下颌骨的骨质结构融合。头影测量结果表明，该手术能提供非常稳定的效果，植入物位置变化很小，植入物和骨质无明显吸收。尽管进行了强化化疗，但对取出的羟基磷灰石进行组织学检查发现，存在大量炎症细胞浸润且无骨形成的区域。因此，该手术对隆颏非常有用，但应格外小心以避免感染。
