Assessment of the Correlation Between Implant Stability and Bone Density by Computed Tomography and Resonance Frequency Analysis in Fresh Cadavers

2014 ◽  
Vol 29 (6) ◽  
pp. 1264-1270 ◽  
Author(s):  
Jean-Christophe Coutant ◽  
Vincent Seguela ◽  
Laurent Hauret ◽  
Philippe Caix ◽  
Bruno Ella
Author(s):  
Ingrid Kästel ◽  
Giles de Quincey ◽  
Jörg Neugebauer ◽  
Robert Sader ◽  
Peter Gehrke

Abstract Background There is disagreement about the optimal torque for tightening smartpegs for resonance frequency analysis (RFA). Subjective finger pressure during hand tightening could affect the reliability of the resulting values. The aim of the current study was therefore to assess whether or not the insertion torque of a smartpeg magnetic device influences the implant stability quotient (ISQ) value during RFA. Methods Thirty self-tapping screw implants (XiVE S, Dentsply Sirona Implants, Bensheim, Germany) with a diameter of 3.8 mm and a length of 11 mm were inserted in three cow ribs with a bone quality of D1. The RFA value of each implant was measured (Ostell, FA W&H Dentalwerk, Bürmoos, Austria) in two orthogonal directions (mesial and buccal) after tightening the corresponding smartpeg type 45 with a mechanically defined value of 5 Ncm (Meg Torq device, Megagen, Daegu, South Korea) (test). Additionally, 4 different examiners measured the RFA after hand tightening the smartpegs, and the results were compared (control). Insertion torque values were determined by measuring the unscrew torque of hand seated smartpegs (Tohnichi Manufacturing Co. Ltd, Tokyo, Japan). Results The ISQ values varied from 2 to 11 Ncm by hand tightening and from 2 to 6 Ncm by machine tightening. The comparison of hand and machine tightening of smartpegs displayed only minor differences in the mean ISQ values with low standard deviations (mesial 79.76 ± 2,11, buccal 77.98 ± 2,) and no statistical difference (mesial p = 0,343 and buccal p = 0,890). Conclusions Manual tightening of smartpeg transducers allows for an objective and reliable determination of ISQ values during RFA.


2020 ◽  
Vol 35 (6) ◽  
pp. 1141-1148
Author(s):  
André Pelegrine ◽  
Fabíola Kubo ◽  
Débora Salatti ◽  
Marcelo Teixeira ◽  
Alireza Moshaverinia ◽  
...  

2011 ◽  
Vol 14 (6) ◽  
pp. 915-923 ◽  
Author(s):  
Joannis Katsoulis ◽  
Marianna Avrampou ◽  
Christian Spycher ◽  
Marko Stipic ◽  
Norbert Enkling ◽  
...  

2019 ◽  
Vol 21 (5) ◽  
pp. 1028-1040
Author(s):  
Attakorn Charatchaiwanna ◽  
Thaned Rojsiraphisa ◽  
Weerapan Aunmeungtong ◽  
Peter A. Reichart ◽  
Pathawee Khongkhunthian

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