改良种植环形支架嵌磁性固位体修复全上颌骨缺失9例报道

目的：为解决传统全上颌缺损赝复体体积大、质量重、固位不良等缺点,设计并验证一种改良种植环形支架嵌磁性固位体对全上颌骨缺失患者赝复修复的临床效果.方法：对9例因肿瘤致全上颌骨切除患者,两侧颧骨植入种植体,以种植体为基本支撑方式,在种植体上端制作改良设计的新型金属环行支架,以前垂直杆摩擦力和后扁平环形杆磁固位体的磁力2种固位形式行上颌赝复修复.结果：经1～3a临床追踪观察,结果显示,改良后的种植体-磁性附着体支架固位稳定,效果更加可靠,义齿体积及重量明显减轻,患者自感舒适满意;较传统支架设计形式,平均义齿固位力增加5N,咬合力增加10N.结论：应用改良后的种植环形支架嵌磁性固位体对全上颌骨缺失行赝复修复,较以往修复方式在固位、稳定、舒适程度及患者自身满意程度上均有明显改善,临床应用前景广阔.

Clinical research of rehabilitating bilateral total maxillary defects with a new improved implants and magnetic attachments bar frameworks: Report of 9 cases

PURPOSE: The purpose of this study was to research the clinical effects of a new improved implant-magnetic attachment bar framework supported the total maxillary prosthesis. METHODS: Nine patients underwent tumor resection with defect of bilateral maxilla, and after at least 1 year,4 implants was inserted into their bilateral zygomatics in every patient. A kind of new improved bar framework were fabricated with implants tightly. Based on these bar framework ,total maxillary prostheses were completed finally. RESULTS: The new improved bar framework was utilized to support the prosthesis, it was observed that the prosthesis was more stable. All patients were satisfied with mastication, speech and appearance after wearing the prosthesis. The prosthesis demonstrated a significant improvement in function and esthetics. CONCLUSIONS: It is concluded that from the practical point of view,the prosthesis with new bar framework is superior to the previous one, and its clinical prosperity is wide. But further studies are necessary to evaluate its long term effects.