Comparison of Measurements of Implant Stability by Two Different Radio Frequency Analysis Systems: An In Vitro Study

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.

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The relationship between resonance frequency analysis (RFA) and lateral displacement of dental implants: an in vitro study

Journal of Oral Rehabilitation ◽

10.1111/joor.12024 ◽

2012 ◽

Vol 40 (3) ◽

pp. 221-227 ◽

Cited By ~ 35

Author(s):

L. Pagliani ◽

L. Sennerby ◽

A. Petersson ◽

D. Verrocchi ◽

S. Volpe ◽

...

Keyword(s):

Resonance Frequency ◽

Dental Implants ◽

Frequency Analysis ◽

Lateral Displacement ◽

In Vitro Study ◽

Vitro Study ◽

Resonance Frequency Analysis ◽

The Relationship

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Relationship between Implant Geometry and Primary Stability in Different Bony Defects and Variant Bone Densities: An In Vitro Study

Materials ◽

10.3390/ma13194349 ◽

2020 ◽

Vol 13 (19) ◽

pp. 4349

Author(s):

Ahmad Ibrahim ◽

Marius Heitzer ◽

Anna Bock ◽

Florian Peters ◽

Stephan Christian Möhlhenrich ◽

...

Keyword(s):

In Vitro Study ◽

Primary Stability ◽

Tissue Level ◽

Significant Loss ◽

Titanium Implants ◽

Vitro Study ◽

Loss Of Stability ◽

Implant Stability ◽

Bone Level

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.

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