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Screw-Retained Internal Connection Zirconia CAD/CAM Abutments

Now online in the Journal of Prosthodontics, a case report co-authored by ACP member Rafael del Castillo, DDS, FACP.

Single implant reconstructions can be clinically challenging, especially in the esthetic zone. Titanium is the preferred material for custom implant abutment fabrication, however, the use of metal abutments has important esthetic limitations. Zirconia screw-retained abutments have been suggested as an alternative to cement-retained, implant-supported single-tooth restorations.

This report evaluated the clinical and radiographic outcomes of single-tooth implant restorations using one-piece, internally connected, screw-retained, CAD-CAM monolithic zirconia restorations fabricated on regular diameter implants.

Twenty-two implants were placed in anterior and posterior areas in 21 partially edentulous patients. Implants and restorations were prospectively followed from the insertion of the restoration (baseline), up to 12-months post-loading.

A 100% implant survival rate resulted after loading. Clinically, patients performed adequate oral health, and tissues were kept healthy. Single-tooth implant restorations using internally connected, screw-retained, CAD-CAM monolithic zirconia abutments can be considered a reliable treatment alternative.

del Castillo, R, Gutiérrez-Garrido, L, Padial-Molina, M, Galindo-Moreno, P. Screw-retained internal connection zirconia CAD–CAM abutments in single implant reconstructions: Results of a 1-year prospective case series study. J Prosthodont. 2023; 1– 10. https://doi.org/10.1111/jopr.13674

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