scholarly journals Contributions to the study of orthodontic mini-implants anchorage

2015 ◽  
Vol 61 (1) ◽  
pp. 5-9
Author(s):  
Alexandru Mircea Nicolau ◽  
◽  
Elisabeta Vasilescu ◽  
Viorica Milicescu ◽  
Vlad Gabriel Vasilescu ◽  
...  
Keyword(s):  
Implant Design ◽  
Space Thickness ◽  
Orthodontic Anchorage ◽  
Special Equipment ◽  
Mini Implants ◽  
Temporary Anchorage Devices ◽  
Orthodontic Implants ◽  
Main Factors ◽  
The Stability

Orthodontic implants, called mini-implants or temporary anchorage devices, have been designed to meet the needs of orthodontic biomechanics. Having the goal of providing resistance to unwanted tooth movements, anchorage is chosen according to the main factors that influence the quality of orthodontic care. Of these, local factors such as bone quality, space, thickness of the gum, etc. should be correlated with those watching the mini-implant design, geometric and dimensional factors that are taken into account for the stability of the mini-implant. This paper summarizes some of the results of the research aimed to analyze the main factors of stability of mini-implants used for orthodontic anchorage and how to measure it using the mini-implants (design shape and dimensions) and a special equipment for testing the tensile strenghth.

Structural and functional analysis of reconnaissance and fire system and decomposition of its functions and subsystems

2021 ◽  
pp. 38-48
Author(s):  
O. Maistrenko ◽  
O. Karavanov ◽  
A. Shcherba
Keyword(s):  
Functional Analysis ◽  
Fire Damage ◽  
Expert Group ◽  
Expert Evaluation ◽  
Military Conflicts ◽  
Main Factors ◽  
The Stability ◽  
The Impact

It is established that the role of reconnaissance and fire systems in the implementation of enemy fire damage in military conflicts occurring at the beginning of the XXI century. Increased  to 75%. However, it was found that the effectiveness of these systems depends on the quality of their equipment. The main factors that are often not taken into account in the acquisition are the possibility, interoperability, stability of each element, the impact of elements on the stability of each other and the functioning of the RVS as a whole. The analysis of recent research and publications has shown that as of today, the approaches to determining the composition of reconnaissance fire systems taking into account these factors are not justified. Given the above, it was decided to conduct a structural and functional analysis of the reconnaissance fire system and the decomposition of its functions and subsystems. To this end, based on the method of cluster analysis, an algorithm for combining a set of tasks performed by reconnaissance and fire systems into groups has been developed and substantiated. The method of expert evaluation was used to obtain substantiated data on the implementation of such a merger. According to the proposed algorithm, the main tasks were first identified, which involve reconnaissance and fire systems. Subsequently, an expert group was formed and the coefficient of relative competence of each member of the expert group was determined. The experts were then asked to combine the identified tasks according to their characteristics into an arbitrary number of groups. After processing the opinions of experts, 10 characteristic groups were identified. Finally, the experts were asked to combine the obtained groups in such a way that each association consisted of similar objects and the objects of different associations differed significantly. The results of the work revealed the functional interconnectedness of the tasks, processes and subsystems of the reconnaissance and fire system. It is also established that a typical reconnaissance fire system will consist of three subsystems (control, reconnaissance and fire influence), which perform specific functions for each of them.

The Monitoring System for Stability of CNC Machining Based on cDAQ and LabVIEW

2014 ◽  
Vol 1039 ◽  
pp. 177-182
Author(s):  
Man Meng ◽  
Wen Jun Zhang ◽  
Peng Chong Wang ◽  
Denis Niedenzu ◽  
Ying Zhong Tian
Keyword(s):  
Monitoring System ◽  
Online Monitoring ◽  
Cnc Machining ◽  
Machining Process ◽  
Depth Of Cut ◽  
Feed Speed ◽  
Online Monitoring System ◽  
Main Factors ◽  
The Stability

In recent years, researching the stability of the CNC machining process is a hotpot in CNC industry. Based on cDAQ and labVIEW, online monitoring system is presented, meanwhile, both software structure and hardware structure are introduced in detail. Researches show that vibration and pressure are the main factors for the quality of the flatness. By studying the relative vibration between the spindle and the platform in the Z axis direction, as well as the shifty pressure that tool works on the flatness of the workpiece, four experiments are designed in this paper under different technological conditions including free moving, Axial Depth of cut, speed and feed speed, which verify the reliability of the online monitoring system.

Temporary Orthodontic Anchorage Devices

2010 ◽  
Vol 1 (2) ◽  
pp. 103-107
Author(s):  
PS Vijayalakshmi ◽  
AS Veereshi
Keyword(s):  
Orthodontic Treatment ◽  
Orthodontic Anchorage ◽  
Temporary Anchorage Devices ◽  
Orthodontic Implants

ABSTRACT Efficient anchorage control is one of the important requisites for successful orthodontic treatment. The conventional means of anchorage control have been the use of transpalatal /lingual arch and palatal button but disadvantage is they do not provide absolute anchorage. Though the use of headgear provide efficient anchorage control, the patients are not compliant in using a headgear. Orthodontic implants have provided us with noncompliant and efficient means of anchorage control. This article traces the journey of development of implants as temporary anchorage devices.

scholarly journals A Brief Review on Micro-Implants and Their Use in Orthodontics and Dentofacial Orthopaedics

2021 ◽  
Vol 11 (22) ◽  
pp. 10719
Author(s):  
Sorana-Maria Bucur ◽  
Luminița Ligia Vaida ◽  
Cristian Doru Olteanu ◽  
Vittorio Checchi
Keyword(s):  
Selection Criteria ◽  
Meta Analysis ◽  
Experimental Investigations ◽  
Success Rates ◽  
Clinical Factors ◽  
Orthodontic Anchorage ◽  
Related Factors ◽  
Temporary Anchorage Devices ◽  
The Stability ◽  
Micro Implants

The aim of this study was to review the literature and evaluate the failure rates and factors that affect the stability and success of temporary anchorage devices (TADs) used as orthodontic anchorage. Data was collected from electronic databases: MEDLINE database and Google Scholar. Four combinations of term were used as keywords: “micro-implant”, “mini-implant”, “mini-screw”, and “orthodontics”. The following selection criteria were used to select appropriate articles: articles on implants and screws used as orthodontic anchorage, published in English, with both prospective and retrospective clinical and experimental investigations. The search provided 209 abstracts about TADs used as anchorage. After reading and applying the selection criteria, 66 articles were included in the study. The data obtained were divided into two topics: which factors affected TAD success rate and to what degree and in how many articles they were quoted. Clinical factors were divided into three main groups: patient-related, implant related, and management-related factors. Although all articles included in this meta-analysis reported success rates of greater than 80 percent, the factors determining success rates were inconsistent between the studies analyzed and this made conclusions difficult.

scholarly journals Revisiting the stability of mini-implants used for orthodontic anchorage

2015 ◽  
Vol 114 (11) ◽  
pp. 1122-1128 ◽  
Author(s):  
Chung-Chen Jane Yao ◽  
Hao-Hueng Chang ◽  
Jenny Zwei-Chieng Chang ◽  
Hsiang-Hua Lai ◽  
Shao-Chun Lu ◽  
...  
Keyword(s):  
Orthodontic Anchorage ◽  
Mini Implants ◽  
The Stability

scholarly journals Construction of Customized Palatal Orthodontic Devices on Skeletal Anchorage Using Biomechanical Modeling

2022 ◽  
Vol 9 (1) ◽  
pp. 12
Author(s):  
Dmitriy Suetenkov ◽  
Dmitriy Ivanov ◽  
Aleksandr Dol ◽  
Ekaterina Diachkova ◽  
Yuriy Vasil’ev ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Treatment Success ◽  
Optimal Placement ◽  
Skeletal Anchorage ◽  
Biomechanical Modeling ◽  
Mini Implants ◽  
Orthodontic Implants ◽  
Orthodontic Device ◽  
The Stability ◽  
Orthodontic Devices

Orthodontic implants have been developed for the implementation of skeletal anchorage and are effectively used in the design of individual orthodontic devices. However, despite a significant amount of clinical research, the biomechanical aspects of the use of skeletal anchorage have not been adequately studied. The aim of this work was to numerically investigate the stress–strain state of the developed palatal orthodontic device supported by mini-implants. Four possible options for the placement of mini-implants in the bone were analyzed. The effect of a chewing load of 100 N on the bite plane was investigated. The study was carried out using biomechanical modeling based on the finite element method. The installation of the palatal orthodontic device fixed on mini-implants with an individual bite plane positioned on was simulated. The dependence of equivalent stresses and deformation changes on the number and location of the supporting mini-implants of the palatal orthodontic device was investigated. Two materials (titanium alloy and stainless steel) of the palatal orthodontic device were also investigated. The choice of a successful treatment option was based on the developed biomechanical criteria for assessing the surgical treatment success. Application of the criteria made it possible to estimate the stability and strength of fixation of each of the considered mini-implants installation options. As a result, options for the mini-implants optimal placement were identified (the first and the fourth which provide distributed front and side support of the device), as well as the preferred material (titanium alloy) for the manufacture of the palatal orthodontic device.

scholarly journals Factors Influencing the Stability and Quality of the French ED Surveillance System

2016 ◽  
Vol 8 (1) ◽  
Author(s):  
Isabelle Pontais ◽  
Vanina Bousquet ◽  
Marc Ruello ◽  
Céline Caserio-Schönemann ◽  
Anne Fouillet
Keyword(s):  
Data Quality ◽  
Surveillance System ◽  
Syndromic Surveillance ◽  
Syndromic Surveillance System ◽  
Health Events ◽  
Factors Influencing ◽  
Temporal Factors ◽  
Main Factors ◽  
The Stability

Identification of the main factors influencing the stability and the quality of the French Emergency departments (ED) syndromic surveillance system: tempOral factors, health events occurring in 2015 and the influence to move from a voluntary to a mandatory system on data quality and transmission.

Criteria for evaluation of the coordinate measurements quality of parts geometric parameters at pilot-experimental production

2019 ◽  
pp. 3-8
Author(s):  
N.Yu. Bobrovskaya ◽  
M.F. Danilov
Keyword(s):  
Quality Indicators ◽  
Quality Management System ◽  
Technical Specification ◽  
Experimental Production ◽  
Technological Heredity ◽  
Coordinate Measurements ◽  
Reasonable Choice ◽  
The Stability ◽  
Geometric Elements

The criteria of the coordinate measurements quality at pilot-experimental production based on contemporary methods of quality management system and traditional methods of the measurements quality in Metrology are considered. As an additional criterion for quality of measurements, their duration is proposed. Analyzing the problem of assessing the quality of measurements, the authors pay particular attention to the role of technological heredity in the analysis of the sources of uncertainty of coordinate measurements, including not only the process of manufacturing the part, but all stages of the development of design and technological documentation. Along with such criteria as the degree of confidence in the results of measurements; the accuracy, convergence, reproducibility and speed of the results must take into account the correctness of technical specification, and such characteristics of the shape of the geometric elements to be controlled, such as flatness, roundness, cylindrical. It is noted that one of the main methods to reduce the uncertainty of coordinate measurements is to reduce the uncertainty in the initial data and measurement conditions, as well as to increase the stability of the tasks due to the reasonable choice of the basic geometric elements (measuring bases) of the part. A prerequisite for obtaining reliable quality indicators is a quantitative assessment of the conditions and organization of the measurement process. To plan and normalize the time of measurements, the authors propose to use analytical formulas, on the basis of which it is possible to perform quantitative analysis and optimization of quality indicators, including the speed of measurements.

HASTANELERİN HİZMET KALİTESİNİN HASTA TATMİN ÖLÇEĞİ İLE ÖLÇÜLMESİ: KARABÜK DEVLET HASTANESİNDE YATAN HASTALAR ÜZERİNDE BİR ARAŞTIRMA THE MEASUREMENT SERVICE QUALITY OF THE HOSPITALS BY THE PATIENT SCALE: A RESEARCH ON THE PATIENTS IN KARABUK STATE HOSP

2013 ◽  
Vol 1 (1) ◽  
pp. 100
Author(s):  
Selçuk Yurtsever
Keyword(s):  
Patient Satisfaction ◽  
Health Services ◽  
Literature Review ◽  
Private Sector ◽  
State Hospital ◽  
Continuous Change ◽  
Satisfaction Scale ◽  
The World ◽  
Main Factors

It has been known that both in the world and in Turkey a continuous change has been experienced in the provision of health services in recent years. In this sense by adopting the customer(client) focused approach of either public or private sector hospitals; it has been seen that they are in the struggle for presenting a right, fast, trustuble, comfy service. The purpose of this research is to measure the satisfaction degree, expectations and perceptions of the patients in Karabük State Hospital through comparison. In this context, the patient satisfaction scale which has been developed as a result of literature review has been used and by this scale it has been tried to measure the satisfaction levels of the patients in terms of material and human factors which are the two main factors of the service that was presented. In the study, with the scales of Servqual and 0-100 Points together, in the part of the analysis MANOVA have been used. The expectations and the perceptions of the patient has been compared first by generally and then by separating to different groups according to the various criterias and in thisway it has been tried to be measured their satisfaction levels. According to the results that were obtained, although, the satisfaction levels of the patients who have taken service from Karabük State Hospital are high in terms of thedoctors and the nurses; it has been reached to the result that their satisfaction levels are low in terms of the materials that have been used at the presenting of the service and the management.

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