Devlin H, Barker G R
University Dental Hospital of Manchester, U.K.
J Prosthet Dent. 1992 Feb;67(2):223-7. doi: 10.1016/0022-3913(92)90458-m.
A variety of problems faces the prosthodontist attempting reconstruction of maxillary defects. This article reviews developments in materials and techniques of obturator prosthesis design for patients experiencing maxillectomy. The size of the maxillectomy defect is one of the main factors governing the prognosis for treatment. Many patients require special prosthodontic techniques. However, routine attention to extension of the prosthesis and balanced occlusion is essential. Obtaining satisfactory retention and stability in the definitive obturator prosthesis can be elusive. Resilient denture base materials are extremely useful in retaining the prosthesis, which obturates small defects. However, the flexibility of these materials makes them unsuitable in large maxillectomy cavities because of the deformation that occurs during mastication. Alternative forms of retention, eg., osseointegrated implants and sectional prostheses retained by magnets, are discussed.
对于试图修复上颌骨缺损的口腔修复医生来说，存在各种各样的问题。本文综述了针对上颌骨切除患者的闭孔器假体设计在材料和技术方面的进展。上颌骨切除缺损的大小是决定治疗预后的主要因素之一。许多患者需要特殊的口腔修复技术。然而，常规关注假体的伸展和平衡咬合至关重要。在最终的闭孔器假体中获得令人满意的固位和稳定性可能并非易事。弹性义齿基托材料在固位假体方面极为有用，可用于封闭小的缺损。然而，由于这些材料在咀嚼过程中会发生变形，其柔韧性使其不适用于大的上颌骨切除腔。文中还讨论了其他固位形式，例如骨整合种植体和通过磁体固位的分段式假体。
