Nordquist W D, Naisbitt D
J Oral Implantol. 1995;21(4):304-8.
A design for the maxillary subperiosteal implant is detailed that (1) simplifies construction, (2) maximizes underlying bone support, (3) minimizes posterior forces to the "egg-shell"-thin bone under the maxillary sinuses, and 4 (accommodates the low-profile, cemented, parallel guiding planes Hader bar. This implant design maximizes bony support for the maxillary overdenture. It places the Hader bar superstructure within a precise envelope that maximizes esthetics, proper phonetics, and acrylic bulk for long-term serviceability.
（1）简化结构；（2）最大化下方骨支持；（3）将对上颌窦下方“蛋壳”薄骨的向后作用力降至最低；（4）适配低轮廓、粘结式、平行导向平面的哈德尔杆。这种种植体设计可最大化对上颌覆盖义齿的骨支持。它将哈德尔杆上部结构置于一个精确的范围内，以最大化美观性、实现正确的语音效果，并保证有足够的丙烯酸树脂体积以实现长期耐用性。
