Discover the Technologies behind our PAX2000 Suction System

discover the technologies behind our pax2000 featured image

Extraoral dental suction systems will be today’s new standard of care for most routine part of oral surgery, whether a dentist is filling a tooth, draining an abscess, or undertaking a more complex operation, such as removing, implant procedures. 

At pH Dental, we have managed to create the PAX2000 – the ultimate dental suction machine in preventing cross-contamination. Through innovative and advanced technologies, the PAX2000 suction system is most efficient in reducing and eliminating aerosols generated during dental treatments. 

So what are the technologies behind our FDA-approved system?

4 CORE Technologies

1. HEPA filters

HEPA filter

HEPA stands for “High-Efficiency Particulate Air.” HEPA is a designation used to describe filters that can trap 99.97% of particles that are 0.3 microns in diameter. The diameter specification of 0.3 micron responds to the worst-case scenario: the most penetrating particle size. Particles that are larger or smaller than 0.3 microns are trapped at even higher efficiency. The coronavirus is approximately 0.125 micron in diameter, which means the HEPA filter is extremely effective in filtering COVID-19. 

How HEPA filters stop particles
HEPA filters can stop particles through four mechanisms: direct impaction, sieving, interception, diffusion.

Most HEPA filters consist of interlaced glass fibers that are twisted and turned in myriad directions to create a fibrous maze. When particles try to go through this maze, they are stopped by the fibers. Even though there haven’t been any conclusive studies proving the effectiveness of HEPA toward COVID-19, their effectiveness against particles of similar sizes have been proven in various studies, including a study conducted by NASA

Nowadays, these filters are used in shops, salons, cars, vacuum cleaners, and air purifiers. They can also be found in hospitals. In our PAX2000, we even use 2 layers of HEPA filters to double its efficiency in filtering viruses and germs.

2. Activated carbon filters

activated carbon filter

Activated carbon filters are small pieces of carbon, typically in granular or powdered block form, that have been treated to be extremely porous to capture particles.

Inside our PAX2000, we combine activated carbon filters with our HEPA filters. The activated carbon works to prevent larger particles like bioaerosols, blood, dust, and other particulates from reaching the HEPA layers, enabling them to perform better and last longer.

However, our defense system doesn’t stop here. In addition to HEPA and activated carbon, we also add another two types of defense for extra protection.

3. Plasma sterilizer

Plasma disinfection is a technology that has been used to inactivate microorganisms on the surface of medical and dental devices. So how exactly does plasma work?

Plasma is a partially ionized gas created when a gas is heated sufficiently or exposed to a strong electromagnetic field. When the plasma is created, a small fraction of the gas molecules is turned into energetic electrons and ions. These electrons and ions then collide with the remaining gas molecules to produce a large amount of unstable chemical radicals, such as OH and ON. These radicals, together with the electrons and ions, would then “attack” microorganisms, destroying their enzymes and nucleic acids. 

A plasma sterilizer is our third line of defense within the PAX2000. But it’s still not the final step.

4. UV light

UV light

Ultraviolet (UV) light is a form of light that is invisible to the human eye. It has a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than x-rays. Hospitals and laboratories often use ultraviolet (UV) light to kill microbes. Scientists have found that UV light spectrum from 200 to 400 nm is highly effective in killing viruses and bacteria.

When viruses are exposed to UV light, their DNA absorbs the high energy from UV light. The light would then initiate a reaction between two molecules of thymine, one of the bases that make up DNA. The thymine dimers created will disrupt the DNA’s normal function, leading to the viruses incapable of reproducing and infecting as a result of damage to their nucleic acids. 

Before COVID-19, UV light has been proven effective in inactivating other coronaviruses, such as SARS and MERS. There are multiple scientific and anecdotal references abound for UV’s efficacy both in literature and in reports of field applications. Of the government reports, NIOSH, OSHA, CDC, GSA, EPA are the most notable. Science in the public forum comes from the University of Cincinnati, Tulsa University, University of Colorado, and McGill University (Canada), to name a few. UV light has the potential to become a game-changer in combating COVID-19. 

Among our PAX2000’s multistep filtration, sterilization, and disinfection process, we use a medical-grade UVC light disinfection of 254 nm as the final layer. UVC light is a particular spectrum of UV light that is harmless when exposed to the human skin. 

How the PAX2000 works?

So how do our these four technologies work together to create the ultimate virus prevention machine?

Our technology pulls airflow and filters the pollutants step by step through a multistep filtration process.

pax2000 dental suction system air flow chart 3
PAX2000’s airflow

Firstly, the system uses a blend of adsorbents through the use of combined filters (molecular sieves) to grasp all targeted pollutants onto their surface. We use 4 different adsorbents to hold a wide range of pollutants. In the second and third step, particulate matter and other dental practice hazards are filtered through the activated carbon and HEPA filters.

The remaining particulates are then inactivated and destroyed by UVC light. Particulates such as blood and other biomaterials have been known to die after being trapped on HEPA filters. Their decomposition can cause harmful VOC’s. This can be the case for many forms of bacteria, viruses, and other particulates found in the dental environment. When released, these gases may rise. At which point, they will be deactivated by the two layers of activated carbon filters located above them. Should the gases or decomposing particulates fall to the lower layers or be pulled via suction, they will then be eradicated by our UV light or plasma sterilization process.

pax2000 extraoral dental suction system internal filter layers: HEPA+Activated Carbon, UVC light, plasma sterilizer
The PAX2000’s internal filter layers

The final plasma stage flashes the adsorbents to break up pollutants and compact the remaining elements in a cartridge. This unique technology avoids rejection, even in the case of wet or hot weather, and makes our filtering efficiency up to 50 times better than competitive technologies. The plasma enhances the capacity to “oxidize” the molecules, and cleans the cartridge so that it remains as efficiently as new.

Moreover, the plasma will blast the walls of viruses and bacteria, thus reducing the risk of their propagation. This ensures that our process emits no toxic particles. Our system is ozone-free because the plasma generation process is well mastered. It is a crucial competence from our master technologist and engineers. Our molecular sieves trap ozone, so if we were to generate some molecules, they would be directly transformed into oxygen.

Now it’s your turn

pax2000 extraoral dental suction system in office photo

So, in conclusion, we have a multistage filtering process assembled within our PAX2000: four layers of activated carbon and HEPA pre-filtration, followed by UVC light and lastly, plasma technology. We designed our system to effectively remove and kill bacteria, viruses, odors, and harmful particles. This exceptional system is ideal for keeping dental professionals, patients, and staff safe. 

Our PAX suction units can operate continuously for up to 8 hours. So you can feel completely confident in knowing our system will protect you at all times. 

For more information regarding the PAX2000, please visit: https://phdentalinc.com/extraoral-dental-suction-system/

We look forward to hearing from you.

Learn more about the PAX2000

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