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Denture anchors designed with a spherical locking element for connection to a removable denture. These anchors are typically a metal or plastic ball (some anchors may have rectangular rather than round cross-sections) that is fixed to a natural tooth (extracoronal fixing) or an implant; both vertical and horizontal ball anchoring devices are available for either rigid or resilient attachment to removable dentures and/or overdentures. Ball anchors used as extracoronal or implant-retaining elements have a wide range of applications; dedicated ball anchors may be used as the fixed component of a two-component dental attachment for dentures.
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