IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v18y2020i1p125-d468894.html
   My bibliography  Save this article

A Novel Technique Using Polytetrafluoroethylene Tape to Solve Screw Loosening Complication in Implant-Supported Single Crowns

Author

Listed:
  • Luis F. Félix

    (Department of Prosthodontics and Restorative Dentistry, School of Dentistry, Complutense University of Madrid, 28040 Madrid, Spain)

  • Michell Medina

    (Department of Prosthodontics and Restorative Dentistry, School of Dentistry, Complutense University of Madrid, 28040 Madrid, Spain)

  • Cristina Gómez-Polo

    (Department of Surgery, Faculty of Medicine, University of Salamanca, 37007 Salamanca, Spain)

  • Rubén Agustín-Panadero

    (Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain)

  • Rocío Ortega

    (Department of Prosthetic Dentistry, School of Dentistry, European University of Madrid, 28045 Madrid, Spain)

  • Miguel Gómez-Polo

    (Department of Prosthetic Dentistry, Faculty of Dentistry, Complutense University of Madrid, 28040 Madrid, Spain)

Abstract

This study aimed to analyze a novel technique to make screws with greater untightening resistance and to solve screw loosening in implant-supported single crowns. Thirty grade IV titanium straight abutments were screwed onto 30 external hex implants using grade IV titanium screws (30 Ncm). They were exposed to cyclic loading (300,000 cycles, 200 N). Samples were divided into 4 groups (15 samples per group): new screws (SCREW group) (control), reused screws (rSCREW group), new screws wrapped with polytetrafluoroethylene (PTFE) tape (PTFE group), and reused screws wrapped with PTFE tape (rPTFE group). Reverse torque values (RTVs) were recorded with a digitally calibrated implant motor. Mean RTVs observed were 14.46 N (±1.10 N) for the control group, 14.42 N (±1.22 N) for the rSCREW group, 19.97 N (±1.16 N) for the PTFE group, and 19.13 N (±2.38 N) for the rPTFE group. Statistically significant differences were found between RTVs of both groups employing screws without PTFE tape (SCREW and rSCREW groups) compared with those using screws wrapped with PTFE tape (PTFE and rPTFE) ( p < 0.001). These results suggest that wrapping the implant–abutment screw with PTFE tape may effectively lower the risk of loosening and even constitute a solution when this complication occurs in implant single crowns.

Suggested Citation

  • Luis F. Félix & Michell Medina & Cristina Gómez-Polo & Rubén Agustín-Panadero & Rocío Ortega & Miguel Gómez-Polo, 2020. "A Novel Technique Using Polytetrafluoroethylene Tape to Solve Screw Loosening Complication in Implant-Supported Single Crowns," IJERPH, MDPI, vol. 18(1), pages 1-10, December.
    • Handle: RePEc:gam:jijerp:v:18:y:2020:i:1:p:125-:d:468894
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/18/1/125/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1660-4601/18/1/125/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:18:y:2020:i:1:p:125-:d:468894. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.