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This personalized device is characterized by its development with biocompatible materials, that is to say natural or artificial components that can be in contact with the human body and that can also be implanted in a living organism [19659002] in a 3D printer from an exhaustive study of the mandibular movement
In addition, this mechanism is manufactured in a 3D printer from an exhaustive study of the mandibular movement. Until now, researchers have produced several prototypes with which they have conducted clinical trials.
The novelty of this study published in the journal Mechanism and Machine Theory, is the ability to design each device individually using an X-ray that collects morphological data from each person. In addition, it is combined with a kinematic analysis, ie a study of the jaw that offers parameters capable of predicting its movement, especially during the rest phases.
The measurements, which can also be performed at the scanner, experts detailed information on the status and behavior of the jaw. "Data such as forward measurements or recession of the jaw with closed mouth respectively, or what is the maximum mouth opening are essential to develop an effective device with guarantees," explains the researcher at the University of Malaga Alex Bataller, one of the makers of this work.
In addition, another of the improvements made by this system is the use of a pair of symmetrical pieces, called cams, that allow the jaw to perform its natural movements. At the same time, they prevent you from backing up while opening your mouth while breathing. "This splint incorporates two cams with a profile tailored to each patient instead of cams with a straight profile as is conventional because it is so that the directed mobility of the jaw is guaranteed," says this researcher.
Removing the sensation of choking [19659002] With the incorporation of these two elements that respect the mandibular movement, experts claim that the system does not represent a feeling of suffocation or a lack of Autonomy for patients. "These are some of the main complaints against the current systems that exist on the market by those who use these conventional devices," says Bataller.
All trials were successfully tested in people with obstructive sleep apnea [19659002] To make prototypes of this mandibular advancement device, experts used a 3D printer that allows for accurately reproduce the dimensions and technical characteristics of the splint. "This technology allows us to get an exact replica of what we are looking for, as well as to take advantage of the raw material without generating waste. With all this, it also gives us the opportunity to innovate without interrupting production, "explains Juan Cabrera, co-author of this research
In this sense, the experts are working in parallel in search of alternative biocompatible materials to conventional transparent plastic. of the main components used today. "With use, this compound acquires a yellowish tone and on contact with the mouth, an average of eight hours a day causes accelerated wear, so we test with other synthetic or synthetic materials. different organic origin of plastic that has a longer shelf life and are free of hazards when they are implanted or when they come into contact with living tissue, in this case the mouth
All the tests conducted by these experts were tested directly on people with sleep disorders, especially obstructive sleep apnea, and were tested positive. "The direct experience is the only way to determine if this type of device meets the needs of patients with sleep disorders and that they can keep their mouths shut or open during their sleep without causing them anxiety or distress. choking, "explains Cabrera
This research work is the result of a collaboration agreement between the university and the company, entities that funded this project. The next phase of the study focuses on finding new biomaterials that are stronger and more durable than current biomaterials.
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