Differences in implant stability associated with various methods of preparation of the implant bed: An in vitro study

2012 ◽  
Vol 107 (6) ◽  
pp. 366-372 ◽  
Author(s):  
Su-Jin Ahn ◽  
Richard Leesungbok ◽  
Suk-Won Lee ◽  
Young-Ku Heo ◽  
Kyung Lhi Kang
Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4349
Author(s):  
Ahmad Ibrahim ◽  
Marius Heitzer ◽  
Anna Bock ◽  
Florian Peters ◽  
Stephan Christian Möhlhenrich ◽  
...  

Aim: This in vitro study aimed to evaluate the effects of implant designs on primary stability in different bone densities and bony defects. Methods: Five implant types (tapered-tissue-level, tissue-level, zirconia-tissue-level, bone-level, and BLX implants) were used in this assessment. The implants were inserted into four different artificial bone blocks representing varying bone-density groups: D1, D2, D3, and D4. Aside from the control group, three different types of defects were prepared. Using resonance frequency analysis and torque-in and -out values, the primary stability of each implant was evaluated. Results: With an increased defect size, all implant types presented reduced implant stability values measured by the implant stability quotient (ISQ) values. Loss of stability was the most pronounced around circular defects. Zirconia and bone-level implants showed the highest ISQ values, whereas tissue level titanium implants presented the lowest stability parameters. The implant insertion without any thread cut led to a small improvement in primary implant stability in all bone densities. Conclusions: Compared with implants with no peri-implant defects, the three-wall and one-wall defect usually did not provide significant loss of primary stability. A significant loss of stability should be expected when inserting implants into circular defects. Implants with a more aggressive thread distance could increase primary stability.


2017 ◽  
Vol 22 (1) ◽  
pp. 349-359 ◽  
Author(s):  
R. A. Delgado-Ruiz ◽  
E. Velasco Ortega ◽  
G. E. Romanos ◽  
S. Gerhke ◽  
I. Newen ◽  
...  

2020 ◽  
Vol 11 (2) ◽  
pp. 202-207
Author(s):  
Cenker Zeki Koyuncuoglu ◽  
Becen Demir

Aim: To compare and evaluate the implant stability quotient (ISQ) measurements by two different radio frequency analysis (RFA) machines, Osstell Mentor and PenguinRFA. Materials and Methods: Twenty bone-level implants (3.7 × 10 mm2) were placed on a bovine bone in this in vitro study. The ISQ measurements were performed with the PenguinRFA and Osstell Mentor machines using the multipeg of the Penguin system. The measurements were repeated three times for each direction and an average ISQ value was calculated. The results were averaged (mean ± SD) and the intraclass correlation coefficient (ICC) was calculated to assess the relationship between the measurements. Result: The mean ISQ values for the Osstell and Penguin machines were 77.60 + 2.11 and 78.05 + 2.04, respectively. The ICC was 0.958. The ISQ values obtained from the Osstell and Penguin machines were significantly compatible ( P < .05). Conclusion: Both of the RFA devices provided similar and reliable ISQ measurements.


2015 ◽  
Vol 41 (4) ◽  
pp. e90-e95 ◽  
Author(s):  
Hakan Bilhan ◽  
Altug Cilingir ◽  
Canan Bural ◽  
Caglar Bilmenoglu ◽  
Olcay Sakar ◽  
...  

Periotest (Medizintechnik Gulden, Modautal, Germany) is a widely accepted implant stability measurement method, although the reliability is not well known. The aim of this in vitro study was to investigate the reliability of the Periotest in implant stability measurements. Thirty implants were placed in 3 cow ribs. The stability of each implant was measured by insertion torque, resonance frequency analyses, and Periotest and then compared. The Periotest values (PTVs) were measured by 4 different examiners. The measurements were repeated twice in both the buccal and mesial directions, for each implant at 2-hour intervals and the intra- and interobserver reliability of Periotest was measured. Results showed that the intraobserver reliability of the Periotest was excellent for the buccal PTVs but fair to poor for the mesial PTVs. The interobserver reliability of the Periotest was excellent for the buccal PTVs but poor for the mesial PTVs. No significance was found between the PTVs and IT values (P = .803) and PTVs and ISQ values, whereas a 47.1% significant correlation was detected between the IT values and ISQ values (P = .009). The present study indicates that only Periotest measurements from buccal result in excellent intra- and interobserver reliability for the quantification of the implant stability.


2021 ◽  
Vol 22 (2) ◽  
pp. 146-151
Author(s):  
Sampathkumar JayaKrishnaKumar ◽  
Rahmath S Shafiullah ◽  
Ramasubramanian Hariharan ◽  
Chitra S Krishnan ◽  
Navarasampatti S Azhagarasan ◽  
...  

2016 ◽  
Vol 46 (4) ◽  
pp. 254 ◽  
Author(s):  
Ho-Chyul Han ◽  
Hyun-Chang Lim ◽  
Ji-Youn Hong ◽  
Su-Jin Ahn ◽  
Ji-Young Han ◽  
...  

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