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Innovative tooth brushing robot

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In principle, teeth and gums can also be perfectly cared for with a normal toothbrush. However, dentists repeatedly find that most people find it easier to achieve good results with electric assistance, and are therefore increasingly advising electric brushes. TÜV SÜD product expert Andrea Mertl explains what consumers should look out for and how products are tested on the German market.

The figures speak for themselves: three quarters of all dentists in Germany are convinced that correct brushing is easier with an electric toothbrush; one in three even believes they can tell from their patients’ dentition whether they are using an electric brush or not. Today, around 40 percent of all people over the age of 14 in this country already use an electric toothbrush. Since this brushing method has long been taken for granted even by more and more kindergarten children, the market share will continue to grow significantly in the coming years. In addition, many electric fans from the very beginning are switching to new models. Here, it is not only product improvements in terms of program selection or battery charging capacities that are enticing – those who still use a retro model with an electric cord or battery operation should switch for safety or environmental reasons. New features such as a smartphone app that documents cleaning time and quality or recognizes which areas are being neglected via a connection to the camera also encourage new purchases.

Andrea Mertl is responsible for testing electric toothbrushes at TÜV SÜD: “Many manufacturers advertise that their products provide good brushing performance. With our tests, we check this on the basis of various aspects and ensure that the electric toothbrushes also clean gently, are user-friendly to use and comply with the specifications regarding safety and environmental protection.”

Innovative toothbrushing robot

An extensive test scenario has been defined for these reviews. A specially developed brushing robot has already been in use since 2017, simulating brushing performance on black-colored artificial dentures. A white paste represents plaque and impurities to be removed from the tested models. How well this is achieved is analyzed by software, which assigns scores for the criteria of interdental spaces, tooth necks, smooth surfaces and overall surface area during its evaluation. After these automated tests and, of course, a thorough safety check in which, for example, the cord and charging station are also closely examined, human test subjects of all ages come into play. They test several products from different manufacturers with different product features and from different price ranges. Only after this elaborate procedure does the company award its test seal.

Rotary model or sonic toothbrush

Basically, electric toothbrushes are based on two different technologies. Rotary models and sonic toothbrushes are still on the market, and within these groups there are of course differences in terms of functionality. Very good results can be achieved with both variants: Rotary brushes have a small, rotating round brush head that works on each tooth individually. The brushes brush with an alternating left-right movement – a semi-circular rotation of the brush head.

Sonic toothbrushes usually have larger, oval brush heads and clean a larger area at once. Nevertheless, the brushes do not clean with sound, but with vibrations that occur at a very high frequency. Meanwhile, the integrated transducers generate sound waves between 250 and 300 hertz that drive the brush head. This creates a buzzing sound, which originally gave this type of toothbrush its name. Since less pressure is required with this system, gentle cleaning is even easier and interdental spaces are also better reached, more and more users are giving preference to sonic brushes.

Special form of sonic brush: ultrasonic toothbrushes

Still relatively new on the market are ultrasonic toothbrushes, which use a special toothpaste and send tiny microbubbles into the deepest crevices of the teeth at up to 96 million vibrations per minute to loosen plaque and bacteria. While the results achieved are excellent, optimal cleaning takes significantly longer than with other systems. Moreover, at the moment this technology is still exclusively represented in the upper price segment and is mainly recommended for people with gum problems, braces or bridges.

“Whether a toothbrush with smartphone connectivity is really necessary is up to each buyer to decide. However, our experience shows that electric toothbrushes generally make good oral hygiene much easier. In any case, we advise to go for tested safety and to pay attention to the corresponding labeling when buying.”  

– Andrea Mertl

News Operation & Maintenance Processing Technologies

Stabilization of plastic exhaust systems during implementation

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According to the exhaust specialist ATEC from Neu Wulmstorf, the Vario roof flange can be mounted on all roofs with high fitting accuracy. The selection is based on the roof pitch and the required nominal size. In addition, the flange is suitable for temperature classes T200 and T250 – and ATEC has had this certified with a general design approval.

The new product combines two components: first, the flange itself, which provides a stable connection between the roof elevation and the roof structure, and second, the optional seal, a self-adhesive vapor retarder. The company provides two versions: for roof pitches between 0° and 30°, and from 30° to 60°, each in eight nominal sizes between DN60/100 and DN250/315. It is also compatible with plastic and metal exhaust systems up to a nominal operating temperature of ≤ 250 °C.

The flange consists of a stainless steel clamp to which two retaining lugs/articulated brackets are welded at the factory. This is accompanied by a cover plate measuring 450 x 450 mm and 0.5 mm thick. With the help of malleable perforated strips, the exhaust pipe together with the Vario roof flange is screwed into place. This allows the Vario to be used flexibly both in new buildings and in existing properties.

 

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Modern user interface impresses international jury

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SIG’s new intuitive Human Machine Interface (HMI) “SIG CRUISER” has been awarded the prestigious iF DESIGN AWARD 2022 in Gold – one of the most important design awards in the world. This part of SIG’s next-generation filling technology enables customers to easily control their entire production process. The user interface is designed to make the operator’s job much easier, while reducing the need for training and prior experience.

The award has been presented annually since 1954 by the iF Industrie Forum Design for outstanding achievements in product design. The company impressed the 132-member jury, which is made up of independent design experts from around the world, and won the award in the “User Interface (UI)” category. Out of nearly 11,000 entries, SIG CRUISER was awarded gold as one of 73 outstanding design achievements.

The judges made the following statement, “With a user-centric approach and sound development methodology, SIG CRUISER provides consistency from the store floor to the top floor, ensuring quick response times and convenience for both the operator and the service team. The user interface is exceptionally simple and user-friendly in terms of operations, layout and graphics, allowing a single operator to control the entire line.”

Today’s competitive environment requires companies to increase production and margins and optimize available equipment. To get the most out of filling lines, it is critical to reduce the risk of downtime and to interconnect, automate and monitor lines for maximum efficiency. The new user interface makes it possible to control the entire filling line. It displays KPIs in an intuitive way.

“This prestigious global design award is the result of the good cooperation between SIG and our partner, HMI Project GmbH. We are very proud that SIG CRUISER stood out from thousands of submissions and convinced the 132-member jury to award an iF DESIGN AWARD in Gold.”

– Stefan Mergel, Senior Product Manager Equipment

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Innovative insights into emergence and classification into subtypes

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One of the deadliest tumor types is pancreatic cancer . The disease is often only discovered in locally advanced or metastasized tumor stages, when surgical intervention comes too late. Researchers led by Dr. Ivonne Regel of LMU Klinikum in Munich have now gained important new insights into the causes of tumor development. They have also succeeded in defining different tumor subtypes based on differences in their metabolic programs. Funded by the Wilhelm Sander Foundation, they are thus making a significant contribution to early detection and to individualized medicine in order to improve the chances of recovery for pancreatic cancer patients.

Pancreatic ductal adenocarcinoma, also known as pancreatic cancer, is a relatively rare but particularly malignant disease. It represents the fourth leading cause of cancer-related deaths in the European Union, and only about 10 percent of patients survive the first five years after diagnosis. This is due to aggressive growth and late diagnosis of the tumor. Pancreatic cancer often manifests itself only after other organs have already been affected and metastases are present. To improve the chance of cure for pancreatic cancer patients, it is of great urgency to find new biomarkers for early detection. Another essential step is to identify tumor-specific signaling pathways that cause aggressive disease progression in order to identify new targets for therapeutic approaches.

TLR3/IRF3/IRF7 signaling pathway critical for pancreatic cancer development

Pancreatic cancer development is a dynamic process involving tissue damage and inflammatory response in the pancreas. When pancreatitis occurs, the organ has a self-healing mechanism. Normal pancreatic cells can divide to replace damaged tissue. Molecules released during inflammatory and tissue-damaging processes are recognized by cell receptors, relaying signals that promote cell survival and division.

However, in pancreatic cells, this can contribute to cell degeneration and promote the development of pancreatic cancer. Researchers led by Dr. Ivonne Regel were able to show for the first time that the signaling pathway plays an important role in inflammatory responses not only in immune cells, but is also active in pancreatic cells of precursor lesions and tumor cells. This activation of the signaling pathway has an important function in pancreatic cancer development. Genetically-altered mice lacking a functional signaling pathway are unable to develop pancreatic carcinomas (see Figure). Similarly, it was genetically knocked out in pancreatic tumor cells using CRISPR/Cas9 gene scissors. These genetically modified tumor cells exhibited significantly less aggressive behavior in cell culture experiments and also showed greatly reduced metastasis in animal models.

“For the first time, we were able to demonstrate that an active signaling pathway in pancreatic cells contributes to the development of pancreatic cancer and also supports the formation of metastases.”

– Ivonne Regel

Dr. Regel’s team has made another exciting discovery: In pancreatic tumor cells, the signaling pathway surprisingly does not regulate known target genes; instead, evidence was found for epigenetic modifications. These are regulatory modifications to DNA and packaging proteins (histones) that influence the activity of genes. Thus, the current research results indicate that activation of the signaling pathway in tumor cells leads to high levels of transcription of specific tumor-promoting genes.

These genes primarily regulate tumor cell metabolism. This is particularly important because metabolites of tumor cells can be found in the blood of patients and can be used as biomarkers. “My team and I have succeeded in identifying different subtypes of pancreatic cancer from the blood of cancer patients based on differences in their metabolic programs” said Dr. Regel. “In further studies, we now want to find out to what extent the development of pancreatic cancer subtypes is regulated by the signaling pathway.”

 

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