Banton B, Henry M D
J Dent Technol. 1997 Sep;14(7):14-20.
Implant attachments of various designs are used to retain, stabilize and sometimes support overdentures. Tissue supported overdentures stabilized and retained by two to four implants are often the restorations of choice due to patient preference, limitations in finances, insufficient available bone to accommodate a greater number of implants, or needed improvements in esthetics, phonetics and oral hygiene. Female retentive sockets in the overdenture base that snap onto male ball abutments offer such advantages as reduction in hydraulic resistance to coupling, lower functional stress on the implants, retention that can be adjusted downward, easy component replacement and only relatively parallel abutments.
各种设计的种植体附着体用于固定、稳定义齿，有时还用于支持覆盖义齿。由两到四颗种植体稳定和固定的组织支持式覆盖义齿，由于患者偏好、经济限制、可用骨量不足以容纳更多种植体，或在美观、语音和口腔卫生方面需要改善，通常是首选的修复方式。覆盖义齿基托中的女性固位槽扣合在男性球形基台上，具有降低耦合液压阻力、降低种植体上的功能应力、固位力可向下调节、部件更换容易以及只需相对平行的基台等优点。
