MODERN METHODS OF CORONO-RADICULAR RESTORATION OF A LATERAL TOOTH WITH AN ENDODONTIC TREATMENT

Most of the teeth that require endodontic treatment have been affected by extensive caries. These weakened them, increasing their risk of fracture and making their restoration much more difficult for the dento-maxillary function to restore. Modern dentistry offers various possibilities for restoring endodontically treated teeth. The best option is selected by the clinician according to the clinical case particularities. This article is a summary of the modern methods used for restoring a lateral tooth with an endodontic treatment

Demonstrator Design of a Modular Multi-arm Robot for On-orbit Large Telescope Assembly

The development of building blocks, and standard interconnects in particular, enables promising perspectives for the assembly of large structures on-orbit. By coupling these standard interconnects with dexterous arms, it is now possible to imagine orbital robots assembling, in-situ, modular structures to emancipate from launcher constraints. Such a mission scenario and related concept of operations are proposed within the ESA MIRROR project. It involves a modular multi-arm installation robot to address this challenge. This paper deals with the design of a fully representative breadboard for this innovative robot in order to prove its concept and abilities. This demonstrator features a ground equivalent robotic system, a testbed and necessary ground support equipments

Use of UIoT for offshore surveys through autonomous vehicles

The ENDURUNS project is a European Research project of the Horizon 2020 framework, which has as its main objective to achieve the optimum and intelligent use of green hydrogen energy for long-term ocean surveys. The ENDURUNS system comprises an Unmanned Surface Vehicle (USV) and an Autonomous Underwater Vehicle (AUV) with gliding capability. The power pack of the USV integrates Li-ion batteries with photovoltaic panels, whilst the AUV employs Li-ion batteries and a hydrogen fuel cell. It is essential to develop a continuous monitoring ca-pability for the different systems of the vehicles. Data transmission between the devices onboard presents challenges due to the volume and structure of the different datasets. A telecommunications network has been designed to manage the operational components considered in the project. The autonomous vehicles perform measurements, providing their position and other data wirelessly. The system will generate a great volume of various signals during the survey. The Remote Control Centre needs to be interfaced with the vehicles in order to receive, manage and store the acquired data. An Underwater Internet of Things (IoT) platform is designed to establish efficient and smart data management. This study presents an exhaustive survey to analyse the telecommunication systems employed in the autonomous vehicles, including the back-end, user interface and mobile units. This paper presents the novel design of the hardware and software structure of the ENDURUNS project with regard to the literature, where its components and their in-terconnection layers are detailed, which is a novel scientific and technological approach for autonomous seabed surveying in deep oceans or in coastal areas

Concept of Operations and Preliminary Design of a Modular Multi-Arm Robot using Standard Interconnects for On-Orbit Large Assembly

The capability of assembling large structures in space is essential to meet the requirements of the future space exploitation and exploration missions. Whether for collecting solar power, or reflecting radio signals or light, dimensions matter. In fact, large structure are continuously increasing in size to bring increased scientific (or commercial) benefits. The studies conducted today foresee structures that will be too large to be launched into orbit as a single self-deploying piece that can be contained in standard launcher fairings. While few concepts exist to perform self-deployment of large structures in space, the approach taken here is based on standard modules that will be assembled in space by a robotic system launched along with the modules. Furthermore, it is assumed that the spacecraft structure and modules will be equipped with Standard Interconnects (SI) that will allow their mating to each other and to the robot system for manipulation/transport, as well as allowing the robot system to move across the structure. This paper introduces the concept of operations and preliminary flight model design of a novel modular multi- arm robot (MAR). The MAR is composed of three modules - a torso and two symmetrical 7-degree of freedom (DOF) anthropomorphic arms with non-spherical wrists - that are functionally independent and can be connected by the means of SIs to form the MAR. The torso is the main body of the robot. This mechanical hub can mate with three other modules (arms and/or payloads). The torso can also be attached directly to the spacecraft structure. It provides the required power, synchronizes and forwards high-level information to its connected modules and hosting spacecraft. The torso is equipped with exteroceptive sensors for monitoring purposes. The two 7-DOF manipulators are the limbs of the MAR: they serve as arms or legs depending on the desired configuration and are used to manipulate payloads or to relocate the robot. The MAR modular approach aims at reducing the burden of developing and launching a complex, large and monolithic robotic system by splitting it into a smaller number of more manageable components. By taking advantage of separating and recombining the manipulators in different configurations, this approach extends the range of possible operations and provides an intrinsic system redundancy that reduces overall mission risks. The MAR concept introduced in this paper is developed as part of the European Space Agency’s MIRROR project

ATLANTIS - The Atlantic Testing Platform for Maritime Robotics

The ATLANTIS project aims to establish a pioneer pilot infrastructure that will allow the demonstration of key enabling robotic technologies for inspection and maintenance of offshore wind farms. The pilot will be implemented in Viana do Castelo, Portugal, and will allow for testing, validation and demonstration of technologies with a range of technology readiness level, in near-real/real environments.The demonstration of robotic technologies can promote the transition from traditional inspection and maintenance methodologies towards automated robotic strategies, that remove or reduce the need of human-in-the-loop, reducing costs and improving the safety of interventions. Eight scenarios, split into four showcases, will be used to determine the required developments for robotic integration and demonstrate the applicability in the inspection and maintenance processes. The scenarios considered were identified by end-users as key areas for robotics.</p

ENDURUNS: An Integrated and Flexible Approach for Seabed Survey Through Autonomous Mobile Vehicles

The oceans cover more than two-thirds of the planet, representing the vastest part of natural resources. Nevertheless, only a fraction of the ocean depths has been explored. Within this context, this article presents the H2020 ENDURUNS project that describes a novel scientific and technological approach for prolonged underwater autonomous operations of seabed survey activities, either in the deep ocean or in coastal areas. The proposed approach combines a hybrid Autonomous Underwater Vehicle capable of moving using either thrusters or as a sea glider, combined with an Unmanned Surface Vehicle equipped with satellite communication facilities for interaction with a land station. Both vehicles are equipped with energy packs that combine hydrogen fuel cells and Li-ion batteries to provide extended duration of the survey operations. The Unmanned Surface Vehicle employs photovoltaic panels to increase the autonomy of the vehicle. Since these missions generate a large amount of data, both vehicles are equipped with onboard Central Processing units capable of executing data analysis and compression algorithms for the semantic classification and transmission of the acquired data