Effect of Double Screw on Abutment Screw Loosening in Single-Implant Prostheses

• Autores: Young-Gun Shin, So-Yun Kim, Ho-Kyu Lee
• Localización: The International Journal of Prosthodontics, ISSN-e 1942-4426, Vol. 29, Nº. 5, 2016, págs. 445-447
• Idioma: inglés
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• Resumen

  • Purpose: This study was conducted to assess the effect of using a double screw on the prevention of abutment screw loosening.

    Materials and Methods: Internal connected abutment with a single screw (IS), internal connected abutment with a double screw (ID), external connected abutment with a single screw (ES), and external connected abutment with a double screw (ED) groups were prepared (n = 10 in each group). After 50,000 loading cycles, postload removal torque loss (RTL) percentage was measured.

    Results: Postload RTL of ID and ED were smaller than those of IS and ES (P = .000 and P = .039, respectively).

    Conclusion: This study showed that a double screw was more effective in prevention of screw loosening.