LOGIN
 
Share Page:
Back

Volume 27 , Issue 1
January/February 2014

Pages 7679


The Influence of Tightening Sequence and Method on Screw Preload in Implant Superstructures

Maha M. Al-Sahan, BDS, MSc/Nassr S. Al Maflehi, BS, MSc/Riyadh F. Akeel, BDS, MDSc, PhD


PMID: 24392482
DOI: 10.11607/ijp.3306

This study evaluated the effect of six screw-tightening sequences and two tightening methods on the screw preload in implant-supported superstructures. The preload was measured using strain gauges following the screw tightening of a metal framework connected to four implants. The experiment included six sequences ([1] 1-2-3-4, [2] 4-2-3-1, [3] 4-3-1-2, [4] 1-4-2-3, [5] 2-3-4-1, and [6] 3-2-4-1), two methods (onestep, three-step), and five replications. Significant differences were found between tightening sequences and methods. In the three-step method, a higher total preload was found in sequences 2 (312 85 N), 3 (246 54 N), and 4 (310 96 N). In the one-step method, a higher total preload was found in sequences 1 (286 94 N), 5 (764 142 N), and 6 (350 69 N). It is concluded that the highest total screw preload was achieved when anterior implants of the superstructure were first tightened in one step, followed by posterior implants. Int J Prosthodont 2014;27:7679. doi: 10.11607/ijp.3306


Full Text PDF File | Order Article

 

 
Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.

 

© 2017 Quintessence Publishing Co, Inc

IJP Home
Current Issue
Ahead of Print
Archive
Author Guidelines
About
Accepted Manuscripts
Submission Form
Submit
Reprints
Permission
Advertising
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us
Help