• Users Online: 249
  • Home
  • Print this page
  • Email this page
Home About us Editorial board Ahead of print Current issue Search Archives Submit article Instructions Subscribe Contacts Login 
ORIGINAL ARTICLE
Year : 2021  |  Volume : 13  |  Issue : 1  |  Page : 24-29

Comparing original and universal screwdrivers in terms of torque loss in the abutment screw


1 Department of Dentistry, Steiner Landstraße 124, 3500 Krems an der Donau, Austria
2 Department of Oral and Maxillofacial Surgery, Hanover Medical School, Carl-Neuberg-Strasse 1, D-30625 Hanover, Germany

Correspondence Address:
Marcus Schiller
Department of Oral and Maxillofacial Surgery, Hanover Medical School, Carl-Neuberg-Strasse 1, D-30625 Hanover
Germany
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/IJDS.IJDS_86_20

Rights and Permissions

Objective: The aim of this study was to examine whether tightening or loosening the abutment screw results in torque loss and whether there is a difference in this respect between original screwdrivers and universal screwdrivers. Materials and Methods: For the purpose of the study, two groups were formed, with the original screwdriver used in group 1 and the universal screwdriver used in group 2. One Straumann implant and one BEGO implant were each inserted into a stationary torque transducer. The next step was to screw 13 abutments into each implant with 13 original abutment screws, using the screwdriver assigned to the group with the torque specified by the manufacturer. To establish whether the torque transmitted to the abutment screw via the screwdriver is also transmitted to the implant rather than causing deformation of the screw head or being transmitted to the surrounding area, the actual torque transmitted from the screw to the implant was measured and recorded electronically during the experiment. Results: There was no loss of torque in the transmission of the tightening torque to the Straumann implant with either screwdriver (P > 0.05). There was a loss of torque in the transmission of the tightening torque to the BEGO implant when using the universal screwdriver but not with the original screwdriver (P < 0.01). Relative to the previously applied tightening torque, a loss of torque when loosening the screw was found with both screwdrivers, both Straumann (P > 0.05) and BEGO (P < 0.05). Conclusion: Using universal screwdrivers can result in loss of torque. The loosening torque is thus decreased, which in turn increases the likelihood of complications such as screw loosening.


[FULL TEXT] [PDF]*
Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)
 

 Article Access Statistics
    Viewed225    
    Printed6    
    Emailed0    
    PDF Downloaded32    
    Comments [Add]    

Recommend this journal