Editorial Type:
Article Category: Research Article
 | 
Online Publication Date: 13 Feb 2024

Comparing Original and Universal Screwdrivers and How They Affect Friction in the Screw

DDS,
DDS,
DDS,
MD, DDS,
DDS, and
DDS
Page Range: 532 – 536
DOI: 10.1563/aaid-joi-D-20-00249
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The present study focused on investigating whether universal screwdriver kits cause less friction between the screwdriver and the abutment screw than original screwdrivers. For this purpose, 2 original screwdrivers (Straumann and BEGO) and a universal screwdriver kit (bredent) were investigated. On 1 implant per screwdriver, 26 abutments were properly attached one after the other with the corresponding abutment screws. After tightening the abutment screw, the force required to pull the screwdriver off the screw head was determined with a spring balance. For both manufacturers, greater pull-off forces were measured when using the original screwdrivers than when using the universal screwdriver. The pull-off force (mean ± SD) required for the Straumann original screwdriver was 3.7 ± 1.4 N, while that required for the universal screwdriver was 0.1 ± 0.1 N (P < .001). The pull-off force was 1.5 ± 1.5 N for the BEGO original screwdriver and 0.7 ± 0.9 N for the universal screwdriver (P = .19). Using original manufacturer-supplied screwdrivers could thus minimize the risk of the screwdriver slipping out of the screw head during dental treatment and being swallowed or aspirated by the patient.

Figure 1.
Figure 1.

Spring balance measurement of force to remove the screw heads. A, spring balance; B, dental floss; C, screw driver; D, abutment; E, abutment screw; F, implant; G, static torque transducer.


Figure 2.
Figure 2.

Comparison of the Straumann and BEGO screwdrivers.


Contributor Notes

Corresponding author, e-mail: marcus_stoetzer@web.de
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