4.2 Attachment elements for fixed and removable dental prostheses
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Once you have completed this e-tutorial, you will…
- know about the different components of screw-retained and cemented implant-borne fixed dental prostheses.
- be able to evaluate in which patient situations a screw-retained fixed dental prosthesis is appropriate and when it should be cemented.
- be able to differentiate between prefabricated and custom-made attachments as well as between single and bar attachments.
- know the different implant components for removable implant-borne dental prostheses.
- understand the advantages and disadvantages of double crowns, bar retainers, magnets, ball attachments, and Locators™.
The connection between implant and superstructure (connecting elements) is of upmost importance. For fixed dental prostheses, these attachments comprise abutments, which enable screw retention or cementation of the restoration. In general, screw-retained superstructures on multiple implants have a tendency toward more technical complications, such as screw loosening, whereas cemented superstructures bear the risk of biological complications such as periimplant mucositis. Aspects influencing selection of the appropriate abutment in the anterior and posterior region as well as aspects of treatment with single crowns or fixed dental prostheses are discussed. Treatment concepts for removable dental protheses differ in terms of primary or secondary splinting as well as static or dynamic transmission of mastication forces from the superstructure to the implant. Correlated to the number and distribution of implants, various attachments such as double crowns, bar retainers, magnets, ball attachments, or Locator™ attachments are discussed.
A. Zöllner, A.F. Boeckler, M. Stimmelmayr, A. Kunz