Objective
Orthodontic treatments are increasingly applied to correct teeth alignment and occlusion problems. In France, for instance, recent studies show that nearly 1 million young adolescents have undergone such treatment. The principle of orthodontic treatments is to impose a continuous and slow displacement of teeth by adjusting tension forces between the brackets (stuck to the teeth), and an arch-wire.
Recent studies show that friction resistance between the arch-wire and the bracket contacts plays a critical role in the treatment quality. Indeed, high friction resistance induces over-stressing, which can damage the periodontal ligaments and generates fastidious and expensive clinical complications. Moreover, friction will induce wear of the bracket and arch-wire materials activating the toxic spreading of Nickel through the body. Current research focuses on the application of specific surface treatments to reduce wear and friction resistance.
However, an exhaustive survey of the literature shows that most of the current in vitro tests are conducted under basic steady state static loading, without considering the micro perturbations induced by mastication and/or the aggressive medium associated to saliva. The objective of this project is to develop new procedures providing quick and relevant information to characterize and optimise specific hardwearing and low friction surface treatments.
The applicant (a scientist in the field of surface coating engineering), working in the LTDS (Host institution specialized in the tribology area), will first define a representative sliding loading combining macro and micro fretting slidings. This loading condition will be reproduced on an adapted environmental fretting wear test, allowing temperature control and artificial saliva conditions. An optimised friction and wear quantification test protocol will be defined and validated through comparisons with in vivo results.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- medical and health sciences clinical medicine odontology orthodontics
- engineering and technology mechanical engineering tribology
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Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP6-2002-MOBILITY-5
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Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
ECULLY
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.