scholarly journals Establishment of a New Biomechanical Measurement Method for Surface Deformation of Bone by Force Application via Dental Implants—A Pilot Study

2021 ◽  
Vol 11 (16) ◽  
pp. 7568
Author(s):  
Ragai Edward Matta ◽  
Katharina Riegger ◽  
Horst Trägler ◽  
Werner Adler ◽  
Stephan Eitner ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Dental Implants ◽  
Measurement Method ◽  
Optical Measurement ◽  
Intraclass Correlation ◽  
Strain Gauges ◽  
Bone Block ◽  
Equivalence Test ◽  
3D Optical Measurement ◽  
Surface Changes

Purpose: To date, the qualitative and quantitative recording of biomechanical processes in dental implants represents one of the greatest challenges in modern dentistry. Modern, dynamic, 3D optical measurement techniques allow highly constant and highly accurate measurement of biomechanical processes and can be superior to conventional methods. This work serves to establish a new measurement method. Materials and Methods: A comparative analysis was undertaken for two different measurement systems, two conventional strain gauges versus the 3D optical two-camera measurement system ARAMIS (GOM GmbH, Braunschweig, Germany), as they detected surface changes on an artificial bone block under masticatory force application. Two implants (Straumann Standard Implants Regular Neck, Straumann GmbH, Freiburg, Germany) were placed in the bone block, and three different three-unit bridges were fabricated. Increasing masticatory forces, from 0 to 200 N, were applied to the bone block via each of these bridges and the inserted implants. Fifteen repetitions of the test were performed using a universal testing machine. The computer unit of the ARAMIS system was used to simultaneously integrate the surface changes recorded by the strain gauges and the ARAMIS system. The areas on the bone block examined by the dynamic 3D optical measurement method corresponded exactly to the locations and extent of the strain gauges. A statistical comparative analysis was carried out separately for the strain gauges and the corresponding optical measuring surface at the defined force magnitudes. The equivalence test and the intraclass correlation served as statistical means. Results: In the case of the intraclass correlation, a clear concordance of both measurement methods could be shown for all examined cases. For the equivalence test, no significance could be shown in individual cases. Conclusion: The accuracy of the modern, dynamic, 3D optical measurement method is comparable to that of conventional strain gauges. On this basis, versatile new research approaches in the field of biomechanics of dental implants can be pursued by establishing this method.

Research on Online Measurement Method of Hole Diameter and Position

2013 ◽  
Vol 347-350 ◽  
pp. 197-200
Author(s):  
Yu Gong ◽  
Jing Cai Zhang ◽  
Hong Qi Liu
Keyword(s):  
Comparative Analysis ◽  
Measurement System ◽  
Measurement Method ◽  
Measurement Methods ◽  
Hole Diameter ◽  
Laser Sensor ◽  
Online Measurement ◽  
Online Detection ◽  
Ccd Imaging ◽  
Inductive Sensor

In this paper, research on measurement methods of hole during the parts online detection has been made. Both diameter and position of the hole are going to be detected in the same measurement system. In order to obtain higher accuracy and efficiency, a comparative analysis test of using the contact probes, the inductive sensor, the laser sensor, the forward and back lighting CCD imaging have been achieved. Results show that the contact measurement using inductive sensor is more suitable for the system, for the reason that it has higher reliability and efficiency.

A new optical measurement method for verifying the exact change of thin films on the QZ blanks with ellipsometer

2009 ◽  
Author(s):  
Songbae Moon ◽  
Seong-Yoon Kim ◽  
Gyung-Yoon Bang ◽  
Byung-Gook Kim ◽  
Sang-Gyun Woo ◽  
...  
Keyword(s):  
Thin Films ◽  
Measurement Method ◽  
Optical Measurement ◽  
Optical Measurement Method

scholarly journals COMPARATIVE ANALYSIS OF XML AND JSON USING PHP APPLICATION PLATFORM WITH REPRESENTATIONAL STATE TRANSFER ( REST ) ARCHITECTURAL

Compiler ◽  
2013 ◽  
Vol 2 (2) ◽  
Author(s):  
Saryanto Saryanto ◽  
Sumarsono Sumarsono ◽  
Nurcahyani Dewi Retnowati
Keyword(s):  
Comparative Analysis ◽  
Web Service ◽  
Measurement Method ◽  
Data Communication ◽  
The Internet ◽  
Time Data ◽  
Xml Data ◽  
Data Measurement ◽  
The Difference ◽  
The Web

Data communication in the internet today is so complex as an example of the speed factor becomes very important in communicating, everyone wants fast data communication services provided in order to maximum. In relation to the application as a communication liaison with client server applications, web service using a data serialization format to transmit the data. Before the data is sent, either fromthe client to the server or vice versa, should be modified in a specific data format beforehand according to the web service is used. Types of data serialization format used in the web service such as XML and JSON. The method used for testing include data serialization method, data measurement method and data parsing method. Data serialization method is used to calculate the time serialization of data from the database to the form of XML and JSON in applications with PHP platform. Data measurement method used to measure the size of the XML and JSON data which based on many fields of data serialization process. Data parsing method is used to calculate the processing time and JSON parsing XML data. Results o f comparative analysis o f XML and JSON in PHP applications using thearchitecture Rest can be concluded that the test result o f the difference in time and time serialization and JSON parsing XML data is influenced by the number o f records, if the number of records the greater the difference in eating time data serialization and parsing the data the greater the time also itcan be concluded that the faster the process JSON serialization and parsing XML data is compared. Testing results o f the JSON data size is smaller than the size of XML. Data exchange using XML format has a size limit of up to 31456.31 KB while JSON XML exceeds the size limit. Testing results on the Internet when the number o f records up to 50,000 data when the data serialization and parsing time data can not be detected in the database.

scholarly journals Perfecting the Hardening Process with 3D Technology

2021 ◽  
Author(s):  
Dirk Schlesselmann ◽  
Andreas Endmann
Keyword(s):  
Optical Measurement ◽  
Induction Hardening ◽  
Fine Tuning ◽  
Process Technology ◽  
3D Optical Measurement ◽  
Induction Process ◽  
New Process ◽  
Drastic Increase ◽  
Complex Development ◽  
Connection System

Abstract Perfecting the induction process relies on fine-tuning every small detail. For the tool, this means the complex development process for the inductors using design software, high-precision production, and the correct positioning of the tool in the machine’s connection system. Applying different new and highly advanced 3D technologies such as FEM & CFD analysis and 3D printing of inductors will lead to a drastic increase of efficiency and the highest reproducibility for the entire process. When this happens, computer-aided accuracies of the inductors are compared with real manufactured inductors using 3D optical measurement methods and will reveal the advantages of this new process technology. The precision and process repeatability of this technology is showcased by various experimental test series’ that take the daily operational challenges for induction hardening as a benchmark.

scholarly journals Comparison analysis of using micrometers and strain gauges for measuring deformations and loads in the method of monitoring the stress-strain state

2021 ◽  
Vol 18 (3) ◽  
pp. 71-75
Author(s):  
M. O. Lobovskiy ◽  
◽  
A. L. Tukkiya ◽  
P. A. Pyatkin ◽  
◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Strain Gauge ◽  
Laboratory Tests ◽  
Strain State ◽  
Field Tests ◽  
Strain Gauges ◽  
Construction Site ◽  
Comparison Analysis ◽  
Stress Strain ◽  
Stress Strain State

The micrometer method for measuring deformations and loads in bar elements has proved to be effective not only in laboratory tests, but also in field tests on a real construction site. Having carried out a comparative analysis of the method proposed by the authors for monitoring the stress-strain state (SSS) with the strain gauge method which is widely used at present, the authors have proved that the method for measuring deformations and loads using a micrometer is not inferior in accuracy to the strain gauge method, although it is much cheaper.

scholarly journals Biomechanical Effects of Diameters of Implant Body and Implant Platform in Bone Strain around an Immediately Loaded Dental Implant with Platform Switching Concept

2019 ◽  
Vol 9 (10) ◽  
pp. 1998
Author(s):  
Hsuan Lung ◽  
Jui-Ting Hsu ◽  
Aaron Yu-Jen Wu ◽  
Heng-Li Huang
Keyword(s):  
Dental Implants ◽  
Lateral Load ◽  
Strain Gauges ◽  
Bone Strain ◽  
Vertical Load ◽  
Artificial Bone ◽  
Implant Stability ◽  
Loading Test ◽  
Platform Switching ◽  
Post Hoc

Dental implants designed with platform switching have been used clinically to reduce crestal bone resorption. The aim of this study was to determine the biomechanical effects of loading types, diameter of platform, and implant diameter in bone strain around immediately loaded implants with platform switching concept. Platform-switching features of dental implants with various diameters of implant body and implant platform (named as RP5.0, RP4.3, and NP3.5) were inserted into artificial bone blocks. The initial implant stability was confirmed using a Periotest device before the loading test. Rosette strain gauges were placed on the alveolar region around the implants, and peak values of the bone strain during a 190-N vertical load or 30-degree lateral load were measured by a data acquisition system. The Kruskal-Wallis test and post-hoc pairwise comparisons were performed as statistical analyses. The median Periotest values of the RP5.0, RP4.3, and NP3.5 implants ranged from −6.59 to −7.34. The RP5.0 implant always showed the lowest bone strain around the implant, regardless of whether a vertical or lateral load was applied. Relative to the RP4.3 and NP3.5 implants, the RP4.3 implant produced a higher bone strain (by approximately 8%) under a vertical load but a lower bone strain (by approximately 25%) under a lateral load. This study confirmed that using a wider implant could relieve the bone strain around an immediately loaded implant with platform switching concept especially under lateral loading.

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