Relationship of Three-Dimensional Bone-to-Implant Contact to Primary Implant Stability and Peri-implant Bone Strain in Immediate Loading: Microcomputed Tomographic and In Vitro Analyses

2013 ◽  
Vol 28 (2) ◽  
pp. 367-374 ◽  
Author(s):  
Jui-Ting Hsu ◽  
Heng-Li Huang ◽  
Chih-Han Chang ◽  
Ming-Tzu Tsai ◽  
Wei-Ching Hung ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Immediate Loading ◽  
Bone Strain ◽  
Implant Stability ◽  
Primary Implant ◽  
Bone To Implant Contact ◽  
Relationship Of

scholarly journals Correction: Antonelli, A., et al. Can Bone Compaction Improve Primary Implant Stability? An In Vitro Comparative Study with Osseodensification Technique. Applied Sciences 2020, 10, 8623

2021 ◽  
Vol 11 (8) ◽  
pp. 3427
Author(s):  
Alessandro Antonelli ◽  
Francesco Bennardo ◽  
Ylenia Brancaccio ◽  
Selene Barone ◽  
Felice Femiano ◽  
...  
Keyword(s):  
Applied Sciences ◽  
Comparative Study ◽  
Implant Stability ◽  
Primary Implant

The author wishes to make the following corrections to this paper [...]

scholarly journals Reliability and Correlation of Different Devices for the Evaluation of Primary Implant Stability: An In Vitro Study

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5537
Author(s):  
Perry Raz ◽  
Haya Meir ◽  
Shifra Levartovsky ◽  
Maia Peleg ◽  
Alon Sebaoun ◽  
...  
Keyword(s):  
In Vitro Study ◽  
Implant Design ◽  
Implant Stability ◽  
High Positive Correlation ◽  
Primary Implant ◽  
Conical Connection ◽  
Vitro Model ◽  
Implant Length ◽  
Positive Significant Correlation

Our aim was to analyze the correlation between the IT evaluated by a surgical motor and the primary implant stability (ISQ) measured by two RFA devices, Osstell and Penguin, in an in vitro model. This study examines the effect of bone type (soft or dense), implant length (13 mm or 8 mm), and implant design (CC: conical connection; IH: internal hexagon), on this correlation. Ninety-six implants were inserted using a surgical motor (IT) into two types of synthetic foam blocks. Initial measurements for both the peak IT and ISQ were recorded at the point when implant insertion was stopped by the surgical motor, and the final measurements were recorded when the implant was completely inserted into the synthetic blocks using only the RFA devices. Our null hypothesis was that there is a good correlation between the devices, independent of the implant length, design, or bone type. We found a positive, significant correlation between the IT, and the Osstell and Penguin devices. Implant length and bone type did not affect this correlation. The correlation between the devices in the CC design was maintained; however, in the IH design it was maintained only between the RFA devices. We concluded that there is a high positive correlation between the IT and ISQ from a mechanical perspective, which was not affected by bone type or implant length but was affected by the implant design.

Three-Dimensional Evaluation of Implant Bed Preparation and the Influence on Primary Implant Stability After Using 2 Different Surgical Techniques

2015 ◽  
Vol 73 (9) ◽  
pp. 1723-1732 ◽  
Author(s):  
Stephan Christian Möhlhenrich ◽  
Nicole Heussen ◽  
Christina Loberg ◽  
Evgeny Goloborodko ◽  
Frank Hölzle ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Surgical Techniques ◽  
Implant Stability ◽  
Primary Implant ◽  
Implant Bed

Non-linear 3D Evaluation of Different Oral Implant-Abutment Connections

2012 ◽  
Vol 91 (12) ◽  
pp. 1184-1189 ◽  
Author(s):  
P. Streckbein ◽  
R.G. Streckbein ◽  
J.F. Wilbrand ◽  
C.Y. Malik ◽  
H. Schaaf ◽  
...  
Keyword(s):  
Finite Element ◽  
Cone Angle ◽  
Three Dimensional ◽  
Bone Strain ◽  
Finite Element Models ◽  
Implant Abutment ◽  
Non Linear ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Micro-gaps and osseous overload in the implant-abutment connection are the most common causes of peri-implant bone resorption and implant failure. These undesirable events can be visualized on standardized three-dimensional finite element models and by radiographic methods. The present study investigated the influence of 7 available implant systems (Ankylos, Astra, Bego, Brånemark, Camlog, Straumann, and Xive) with different implant-abutment connections on bone overload and the appearance of micro-gaps in vitro. The individual geometries of the implants were transferred to three-dimensional finite element models. In a non-linear analysis considering the pre-loading of the occlusion screw, friction between the implant and abutment, the influence of the cone angle on bone strain, and the appearance of micro-gaps were determined. Increased bone strains were correlated with small (< 15°) cone angles. Conical implant-abutment connections efficiently avoided micro-gaps but had a negative effect on peri-implant bone strain. Bone strain was reduced in implants with greater wall thickness (Ankylos) or a smaller cone angle (Bego). The results of our in silico study provide a solid basis for the reduction of peri-implant bone strain and micro-gaps in the implant-abutment connection to improve long-term stability.

scholarly journals Can Bone Compaction Improve Primary Implant Stability? An In Vitro Comparative Study with Osseodensification Technique

2020 ◽  
Vol 10 (23) ◽  
pp. 8623
Author(s):  
Alessandro Antonelli ◽  
Francesco Bennardo ◽  
Ylenia Brancaccio ◽  
Selene Barone ◽  
Felice Femiano ◽  
...  
Keyword(s):  
Cancellous Bone ◽  
Biological Response ◽  
In Vivo Studies ◽  
Insertion Torque ◽  
Clinical Settings ◽  
Implant Stability ◽  
Primary Implant ◽  
Significant Difference

Background: This study aims to analyze bone compaction and osseodensification techniques and to investigate how cancellous bone compaction could influence primary implant stability (PS). Methods: Two different surgical protocols (bone compactors—BC; osseodensification drills—OD) were compared by placing 20 implants into 20 fresh pig ribs for each procedure. Peak insertion torque (PIT) and peak removal torque (PRT) were investigated using an MGT-12 digital torque gauge, and implant stability quotient (ISQ) was analyzed using an Osstell® Beacon device. Results: Analysis of our data (T-test p < 0.05) evidenced no statistically significant difference between BC and OD in terms of PIT (p = 0.33) or ISQ (p = 0.97). The comparison of PRT values showed a statistically significant difference between BC and OD protocols (p = 0.009). Conclusions: Cancellous bone compaction seems to improve PS, preserving a significant amount of bone and evenly spreading trabeculae on the entire implant site. Although the PIT and ISQ values obtained are similar, the PRT values suggest a better biological response from the surrounding bone tissue. Nevertheless, a larger sample and further in vivo studies are necessary to validate the usefulness of this protocol in several clinical settings.

Effect of Rotating Osteotomes on Primary Implant Stability—An In Vitro Investigation

2013 ◽  
Vol 39 (1) ◽  
pp. 52-57
Author(s):  
Philipp Kreißel ◽  
Felix Kölpin ◽  
Friedrich Graef ◽  
Manfred Wichmann ◽  
Matthias Karl
Keyword(s):  
Bone Density ◽  
Primary Stability ◽  
Surrogate Models ◽  
Poor Quality ◽  
Cortical Layer ◽  
Implant Stability ◽  
Implant Stability Quotient ◽  
Primary Implant ◽  
In Vitro Investigation

Achieving sufficient primary implant stability in poor-quality bone is difficult. Other than for conventional osteotomes, little is known about the effectiveness of screw-shaped spreaders in condensing bone and increasing primary stability. Therefore, implant stability quotient (ISQ) measurements of implants placed in bone surrogate models were conducted. Whereas bony microarchitecture had no effect on implant stability, initial bone density, presence of a cortical layer, and the use of screw-shaped spreaders significantly increased ISQ levels.

scholarly journals An In Vitro Evaluation of Primary Stability Values for Two Differently Designed Implants to Suit Immediate Loading in Very Soft Bone

2021 ◽  
Vol 9 (1) ◽  
pp. 5
Author(s):  
Dirk Krischik ◽  
Selen Ergin Tokgöz ◽  
Andreas van Orten ◽  
Anton Friedmann ◽  
Hakan Bilhan
Keyword(s):  
Dental Implants ◽  
Primary Stability ◽  
Poor Quality ◽  
Immediate Loading ◽  
Standard Protocol ◽  
Resonance Frequency Analysis ◽  
Implant Stability ◽  
Sufficient Stability ◽  
Implant Bed

The achievement of sufficient implant stability in poor quality bone seems to be a challenge. Most manufacturers develop special dental implants, which are claimed to show higher stability even in very soft bone. The aim of this experimental study was to compare two recently introduced dental implants with differing thread designs. A total of 11 implants of each group were inserted in the part of the fresh bovine ribs, corresponding to very soft bone. The primary stability was measured with resonance frequency analysis (RFA) and Periotest; the average of two measurements for each method and for each implant was taken and statistical analysis was applied. The highest stability values were obtained with the ICX Active Master implants, followed by the Conelog® Progressive-Line implants placed with the very soft bone protocol. The primary stability values of the Conelog® Progressive-Line implants inserted by the very soft bone protocol and the ICX Active Master implants placed with the standard protocol showed sufficient stability for immediate loading in low-density bone. Within the limitations of this study, the thread design of the implants and underdimensioned implant bed preparation seem to be effective for better primary stability in cancellous bone.

Relative Contribution of Trabecular and Cortical Bone to Primary Implant Stability: An In Vitro Model Study

2016 ◽  
Vol 42 (2) ◽  
pp. 145-152 ◽  
Author(s):  
Russell Wang ◽  
Steven J. Eppell ◽  
Christian Nguyen ◽  
Nathan Morris
Keyword(s):  
Trabecular Bone ◽  
Cortical Bone ◽  
Quantitative Information ◽  
Cortical Layer ◽  
Insertion Torque ◽  
Implant Stability ◽  
Relative Contribution ◽  
Primary Implant ◽  
Torque Values

The specific aim of this study was to examine the relative contributions to the implant insertion torque value (ITV) by cortical and trabecular components of an in vitro bone model. Simulated bone blocks of polyurethane were used with 2 densities of foam (0.08 g/cm3 to mimic trabecular bone and 0.64 g/cm3 to mimic cortical bone). We have developed a new platform technology to collect data that enables quantitative evaluation of ITV at different implant locations. Seven groups were used to model varying thicknesses of cortical bone over a lower-quality trabecular bone that have clinical significance: a solid 0.08 g/cm3 block; 1 mm, 2 mm, and 3 mm thick 0.64 g/cm3 sheets with no underlayer; and 1 mm, 2 mm, and 3 mm thick 0.64 g/cm3 sheets laminated on top of a 4 cm thick 0.08 g/cm3 block. The ITVs were recorded as a function of insertion displacement distance. Relative contributions of ITV ranged from 3% to 18% from trabecular bone, and 62% to 74% from cortical bone depending on the thickness of the cortical layer. Inserting an implant into 2-mm and 3-mm cortical layers laminated atop trabecular blocks had a synergistic effect on ITVs. Finally, an implant with a reverse bevel design near the abutment showed final average torque values that were 14% to 34% less than their maximum torque values. This work provides basic quantitative information for clinicians to understand the influence of composite layers of bone in relation to mechanical torque resistances during implant insertion in order to obtain desired primary implant stability.

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