Virtual Surgery in Implantology: A Systematic Review and State of the Art

Introduction: Dental implant procedures have increased worldwide, reaching approximately one million dental implants per year. The optimization of faster and more accurate techniques by dentists and postoperative surgeons with better results and quality of life stimulated the development of numerous software and hardware for performing computer-guided surgeries, so-called virtual surgeries (VS). Objective: to present, through a systematic review, the main considerations of virtual surgery in dentistry and their respective advantages, disadvantages, and limitations. Methods: The model used for the review was PRISMA. We used databases such as Scielo, Lilacs, Google Scholar, PubMed. Major findings: In the scenario of VS in dentistry, advances in technology have contributed to the improvement of the models, since there was only the direct molding technique to obtain patient models, with the positioning of implants not very favorable in terms aesthetics. The information that is acquired in the 3D reconstructions allows us to determine the quantity and quality of the available bone and also allows the simulation of the installation of the implants in a virtual environment. This provides predictability of techniques and difficulties that can be encountered during surgical intervention, reducing the time and the possibility of errors, allowing the overall reduction of oral rehabilitation costs. Conclusion: Preoperative virtual planning and reconstruction of the mandible guided by dental implants through preoperative designs provide high success rates for the implant and dental rehabilitation, benefiting also prosthetic restorations supported by fixed implants. Still, the concept of using personalized implants with the help of 3D virtual treatment planning, stereolithographic models, and computer-assisted design greatly improves the mandibular restoration and helps to obtain a good facial profile, aesthetic and dental rehabilitation, avoiding complications with the grafts autologous

Virtual and minimally traumatic surgery in bucomaxillofacial procedures: a concise systematic review

Introduction: In recent years, maxillary atrophy is an increasingly frequent clinical condition and the causes that lead to focal or generalized atrophy are multiple factors. Based on the histological concept in which living tissues are formed by cells joined by thin elastic tissue and with nerve fibrils, capillaries, lymphatic and blood vessels. The disruption of these cells by surgical trauma provides the release of enzymes that delay healing. For this reason, surgical trauma should be minimized. Objective: Aimed to perform a brief review of the main considerations of virtual and minimally traumatic surgery in the context of maxillofacial surgery. Methods: The model used for the review was PRISMA. We used databases such as Scielo, Lilacs, Google Scholar, PubMed. The Cochrane Instrument was used to assess the risk of bias of the included studies. Results and Conclusion: A total of 118 articles were found involving virtual and minimally invasive surgery in maxillofacial procedures. A total of 56 articles were fully evaluated and 28 were included in this study. the main considerations regarding minimally traumatic surgery are the attempt to minimize the professional's effort, reduce surgical time and alleviate bleeding and inflammatory processes, edema, pain, and ecchymosis that can affect patients. Thus, the maximum preservation of the integrity of the soft tissues adjacent to the prosthetic spaces and the preservation of the level of the ridge of the alveolar bone to achieve a minimization of surgical trauma must be sought

The 1st Advanced Manufacturing Student Conference (AMSC21) Chemnitz, Germany 15–16 July 2021

The Advanced Manufacturing Student Conference (AMSC) represents an educational format designed to foster the acquisition and application of skills related to Research Methods in Engineering Sciences. Participating students are required to write and submit a conference paper and are given the opportunity to present their findings at the conference. The AMSC provides a tremendous opportunity for participants to practice critical skills associated with scientific publication. Conference Proceedings of the conference will benefit readers by providing updates on critical topics and recent progress in the advanced manufacturing engineering and technologies and, at the same time, will aid the transfer of valuable knowledge to the next generation of academics and practitioners. *** The first AMSC Conference Proceeding (AMSC21) addressed the following topics: Advances in “classical” Manufacturing Technologies, Technology and Application of Additive Manufacturing, Digitalization of Industrial Production (Industry 4.0), Advances in the field of Cyber-Physical Systems, Virtual and Augmented Reality Technologies throughout the entire product Life Cycle, Human-machine-environment interaction and Management and life cycle assessment.:- Advances in “classical” Manufacturing Technologies - Technology and Application of Additive Manufacturing - Digitalization of Industrial Production (Industry 4.0) - Advances in the field of Cyber-Physical Systems - Virtual and Augmented Reality Technologies throughout the entire product Life Cycle - Human-machine-environment interaction - Management and life cycle assessmen

Кибербезопасность в образовательных сетях

The paper discusses the possible impact of digital space on a human, as well as human-related directions in cyber-security analysis in the education: levels of cyber-security, social engineering role in cyber-security of education, “cognitive vaccination”. “A Human” is considered in general meaning, mainly as a learner. The analysis is provided on the basis of experience of hybrid war in Ukraine that have demonstrated the change of the target of military operations from military personnel and critical infrastructure to a human in general. Young people are the vulnerable group that can be the main goal of cognitive operations in long-term perspective, and they are the weakest link of the System.У статті обговорюється можливий вплив цифрового простору на людину, а також пов'язані з людиною напрямки кібербезпеки в освіті: рівні кібербезпеки, роль соціального інжинірингу в кібербезпеці освіти, «когнітивна вакцинація». «Людина» розглядається в загальному значенні, головним чином як та, що навчається. Аналіз надається на основі досвіду гібридної війни в Україні, яка продемонструвала зміну цілей військових операцій з військовослужбовців та критичної інфраструктури на людину загалом. Молодь - це вразлива група, яка може бути основною метою таких операцій в довгостроковій перспективі, і вони є найслабшою ланкою системи.В документе обсуждается возможное влияние цифрового пространства на человека, а также связанные с ним направления в анализе кибербезопасности в образовании: уровни кибербезопасности, роль социальной инженерии в кибербезопасности образования, «когнитивная вакцинация». «Человек» рассматривается в общем смысле, в основном как ученик. Анализ представлен на основе опыта гибридной войны в Украине, которая продемонстрировала изменение цели военных действий с военного персонала и критической инфраструктуры на человека в целом. Молодые люди являются уязвимой группой, которая может быть главной целью когнитивных операций в долгосрочной перспективе, и они являются самым слабым звеном Систем

Digital dentistry and guided treatments: a concise systematic review

Introduction: In the landscape of new digital technologies, many dental treatments have benefited from this digital advance. The development of computed tomography (CT) dental scanners has enabled powerful imaging capabilities and software applications. The prosthetic plane and implanted drill guides with the placement of trajectories based on a drill according to the position of the CT 3-D Space markers. Objective: To present, through a systematic review, the main considerations of guided surgery in implant dentistry and its respective advantages, disadvantages, and limitations. Methods: Clinical studies with qualitative and/or quantitative analysis were included, following the rules of the systematic review-PRISMA. Results: Out of a total of 102 articles found, 82 articles were evaluated and 57 were rejected for not meeting the GRADE classification, and only 25 articles were used in this study to compose the textual part. Advances in technology have contributed to the improvement of implant models. 3D reconstructions make it possible to determine the quantity and quality of available bone and also enable the simulation of implant installation in a virtual environment, reducing time and the possibility of errors, allowing for an overall reduction in the costs of oral rehabilitation. Conclusion: Guided preoperative planning or project-guided dental surgery provides high implant and dental rehabilitation success rates, also benefiting prosthetic restorations supported by fixed implants. Furthermore, the concept of using personalized implants with the help of 3D virtual treatment planning improves mandibular restoration with a good facial profile, esthetics, and dental rehabilitation

Patterns of risk of cancer in patients with metal-on-metal hip replacements versus other bearing surface types: a record linkage study between a prospective joint registry and general practice electronic health records in England.

BACKGROUND: There are concerns that metal-on-metal hip implants may cause cancer. The objective of this study was to evaluate patterns and timing of risk of cancer in patients with metal-on-metal total hip replacements (THR). METHODS: In a linkage study between the English National Joint Registry (NJR) and the Clinical Practice Research Datalink (CPRD), we selected all THR surgeries (NJR) between 2003 and 2010 (n = 11,540). THR patients were stratified by type of bearing surface. Patients were followed up for cancer and Poisson regression was used to derive adjusted relative rates (RR). RESULTS: The risk of cancer was similar in patients with hip resurfacing (RR 0.69; 95% Confidence Interval [CI] 0.39–1.22) or other types of bearing surfaces (RR 0.96; 95% CI 0.64–1.43) compared to individuals with stemmed metal-on-metal THR. The pattern of cancer risk over time did not support a detrimental effect of metal hip implants. There was substantial confounding: patients with metal-on-metal THRs used fewer drugs and had less comorbidity. CONCLUSIONS: Metal-on-metal THRs were not associated with an increased risk of cancer. There were substantial baseline differences between the different hip implants, indicating possibility of confounding in the comparisons between different types of THR implants

An Introduction to the Intellectual Property Law Implications of 3D Printing

Put simply, 3D printing allows people to print physical objects that are scanned, downloaded, or created digitally. There are an astonishing number of uses, benefits, and advantages associated with 3D printing. However, as with any new technology with so much potential, 3D printing presents a number of threats and challenges to many who benefit from the way manufacturing currently operates. While 3D printers will likely have a tremendous economic and socio- cultural impact, the following will provide an overview of some of its implications relating to intellectual property law. I will begin by briefly discussing the history of 3D printing and explain how it works. Next, I describe how and why 3D printing could drastically change the world we live in by outlining its advantages over previous manufacturing methods, listing some of its possible uses, and exploring the economic impact it might have. The next section of this article will focus on 3D printing’s relationship with intellectual property law. This new technology is of particular interest because it encompasses copyright, patent, trademark, and industrial design laws. I will generally discuss some of the challenges 3D printing presents in each of those areas, outline how the current regime might deal with those challenges, and provide some suggestions. There are a number of approaches that could be taken with regards to 3D printing. Some might involve tightening intellectual property law in order to protect rights-holders, while other approaches could focus on loosening the current regime in order to foster innovation and allow 3D printing to develop to its full potential. I will ultimately suggest that rushing new legislation or altering current legislation could have unintended consequences

Rapid manufacturing as an enabling technology in supply chain improvements

Rapid Manufacturing (RM), the direct production of a finished product, is a newly emerging manufacturing technology projected to provide supply chain benefits. However, there is a lack of information detailing its expected benefits in the supply chain. Robust, generic guidelines are needed in order to help practitioners cope with this emerging manufacturing technology. The aim of this research is to establish the benefits and difficulties of RM in supply chain along with an indication of the possible changes required to sustain RM as a future potential manufacturing machine. There is a common consensus that an information system is required for the effective functioning of the supply chain. This study concerns the integration of RM within the supply chain information system. As the parameters of the supply chain and information system applications are many, the research is focused on a specific set of parameters. Critically, the focus of the study is on identifying how RM would improve customisation and reduce lead time and inventory on products. The application of the information system is also examined. With the research focused towards the future, technological forecasting of RM's impact on the supply chain and information system is considered. Adopting scenarios the application of RM is explored in various supply chain structures, A performance analysis of RM is undertaken by means of a questionnaire involving people with relevant experience. From the results, decision analysis on supply chain structures adopting RM is undertaken to select a suitable structure for the manufacture of a product through RM. A decision-analysis tool kit is developed and products are grouped according to the criteria suitable for the application of RM. Validation of the decision-analysis tool kit and the suitability of RM in the supply chain is carried out via a case study of the production of a prosthetic product. The results how that the developed decision-analysis system works simply and effectively. RM is suitable for application in various supply chain structures; it provides a new dimension ('in-depth') in customising products as well as reducing inventory and lead-time. However, the full effectiveness of RM is entirely dependent on the supply chain structure adopted. Hence, some changes required to sustain RM as a future potential manufacturing system are suggested. Finally, the case study is used to illustrate the possible application of RM in improving selected parameters of supply chain performance for the manufacture of customised products