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You will find all kinds of portable aerosol suction system or extaoral suction unit in the market this year. You might want to know how to find a right one for your office. We’ve assembled a list of things to consider when searching for an aerosol suction unit to fit in your office…

Suction power- should we look at motor power (watts), pressure rating or airflow rate?

The customers want a machine with high suction power to capture as much aerosol as possible. So what does it mean high suction power? Which number on the product specs should we compare among different models? The short answer is bigger motor or higher pressure doesn’t guarantee the equipment can take more aerosol than a smaller unit.  The number really matters to us is the airflow rate (or volume flow), which is calculated by multiplying air velocity by the cross section area of a suction duct/pipe.  It can be translated to ACH (air changes per hour) in OSHA standard, meaning the number of times air is replaced in an hour. Volume flow is usually measured in Cubic Feet per Minute (CFM).Higher airflow (CFM) also means high face velocity from the suction hood and higher velocity pressure (suction power) in the pipe.

Let’s compare product A (1000 Watt) and product B (200 Watt) in the picture below. The negative pressure at fan inlet is claimed at -25kPa for product A, while the negative pressure at fan inlet is 3kPa for product B. However, both airflow is rated at 150CFM. What would you choose? Should we choose the higher suction pressure?

The most important factor is how much air with aerosol can be sucked into the system. In other words, how fast the polluted air around dentist’s operation area can be replaced with HEPA filtered clean air. Same airflow rate means the same face velocity and air movement from the suction hood. If the airflow is the same, bigger motor and high pressure may only indicate less efficiency design, higher noise level (db) or higher utility cost to the office.  That’s why OSHA and ASHRAE ventilation standard 62.1 gives specific ACH (air exchange per hour) requirements for different space types instead of using motor horsepower or fan inlet pressure.

You should be also careful about the number claimed on the manufacturer’s specs. For example, a product was claimed suction power of 4000 L/min (141CFM) air volume and 25kPa pressure, which is equal to 100 in. water gauge pressure. You may ask your engineer friend if a 1,000Watt fan can provide 100 inch pressure in real world. Here’s a simple calculation for fan power: required fan power= 141CFM*100 in./(100%*6356)=2.21HP=1,653Watt- this is the power needed with a 100% fan efficiency (which is impossible). Now we find the over-claim in this specs. 

Air Filtering Standard:  Why HEPA?  HEPA stands for High Efficiency Particulate Air. It is a standard defined and developed by the U.S. Department of Energy during the 1940s as part of their efforts to contain the spread of particles and contamination resulting from nuclear testing. This standard has since moved into the consumer market and has become commonplace for medical grade filtration.
True HEPA generally ranges from H10-H12. This is the “grade” of HEPA or the level of efficiency. The higher the grade, the better the filter. HEPA H13-H14 are within the highest tier of HEPA and are considered medical grade quality. Whereas H10-H12 filters only trap 85-99.5% of all particles that are 0.1 microns in diameter, HEPA H13 and H14 trap 99.95% and 99.995% of such particles, respectively.
Medical grade HEPA filters are commonly used in pharmaceutical manufacturing and electronic control rooms because they have a greater particulate retention rate. This means medical grade HEPA filters are more efficient in removing harmful toxins and airborne with virus from the environment. And you can always upgrade your filter from H13 to H14 anytime.

CAUTION: HEPA Type and HEPA Like

Unlike True HEPA, “HEPA Type” and “HEPA Like” filters fail the standard. These terms are essentially meaningless and are used in order to confuse consumers into purchasing lower quality filters and air purifiers. While it is variable what percentage of particles these filters do remove, it is certain that they do not remove 99.97% of particles 0.3 microns in diameter. These filters are less dense and thus unable to trap the smallest and most harmful particles.

So, to answer one of the first questions: No – there are not different types of HEPA. There is either HEPA or NOT HEPA.

Noise Level:  You want this to be as low as possible, but realize some of the high capacity aerosol suction units do make noise. Working in a noisy environment for a long time can be painful. Also make sure the unit come with speed adjustment function to lower the noise level if necessary.

Cost of Replacement Parts:  

Find out what it costs to replace filters and other parts. Make sure it is easy to access the filter chamber. Do you want to pay extra for technician to do maintenance?

Electricity Costs: Know how much it costs to run an electronic air cleaner.
Comparison of a 200 Watt High Efficiency motor and 1800 Watt motor
The electricity cost is $0.15/kWh * 1800 hrs * (1.8-0.2) = $432 with assumption of 1800hr run time and utility rate at 0.15/kWh

Warranty: Learn about the warranty available for the unit you are considering. Normally the cosmetic and consumables are not covered in Warranty.

Indicator Lights or alarm for Filter Changes:  

Some units have them. It’s not necessary, but is kind of convenient.

Multi-layer Filters: Does the unit have a pre-filter and middle layer of filter to increase HEPA filter efficiency? A pre-filter and middle layer filter can make the HEPA filter last longer with better efficiency.

Size and Look of the Aerosol suction unit:  Some dental aerosol suction units are big and ugly. Others are sleek and pleasing to the eye.

Choice of suction duct/pipeSome people like the convenience of flexible duct. But many others prefer the better looking and sturdy aluminum arm. Based on our observation and experience, the flexible duct doesn’t last as long as the aluminum arm/pipe.

Tips on Selecting a Perfect Dental Extra-oral Vacuum Machine

Top 1:

Mobile Trolley UV Sterilizer Disinfection Lamp Germicidal UV Sterilizing Light with Wheels

Power 100W or 150W is suitable for area of 40-150m2. It is specially used for large areas (schools, hospitals, factories, etc.)
Includes timer that can be set for 15, 30 or 60 minutes to allow exit from the room in order to avoid exposure to UV-C light.Automatically switches off when the desired time has expired.
10 secs activation delay,Long-distance remote control is more worry-free and can pass through walls
Reduces allergic reactions by eliminating airborne contaminants . Wheel design for easy movement
This product is divided into two types: UV and UV+Ozone. The model containing ozone needs to wait 40 minutes after use.

Top 2:

FY® 30DC Mobile UV+Ozone Disinfection Car Ultraviolet Lamp Sterilizer Trolley Cart Unit Hospital

Products Description:
FY UV Room sterilizer FY-30DC,has two pcs of 30 watts UV lamps that emit a high intensity ultraviolet light that hits every surface in the room and kills any micro organisms or pathogen including MRSA,hand foot mouth disease,colds and flu, pneumonia,molds,e.coli,salmonella and similar type bacteria.
The light penetrates and destroys the actual DNA of micro organisms.
There is no known micro organism that is immune to UV-C energy.
UV Room Sterilizer disinfects approximately up to 30 square meters room area.

Top 3:

FY 120W-220W Mobile UV+Ozone Disinfection Lamp Ultraviolet Sterilizer Light Trolley 253.7nm

UVC Light Sterilizer,has four (4) 30 watts /55 watts germicidal ultraviolet lamps that emit a high intensity ultraviolet light that hits every surface in the room and kills any micro organisms or pathogen including MRSA,hand foot mouth disease,colds and flu,pneumonia,molds,e.coli,salmonella and similar type bacteria.
UVC Light Sterilizer Trolley is laboratory tested ,used by hospitals and recommended by doctors.

Digital X-ray machine advantages:
• better image quality provides the possibility to detect important details through digital processing;

• operation speed provides the possibility to assess the obtained image online using a computer;

• availability – modern portable digital X-ray machines are both portable and stationary and are widely used to diagnose various medical conditions;

• provide the possibility to store relevant information on digital media, ensuring data handling convenience and efficient space utilization;

• and two of the most important advantages are low cost of patient examination and operating staff safety, as digital machines do not require film developing processes thus eliminating contact with chemical reagents.

The PHILIPS DigitalDiagnost, FUJI FCR GO and SHIMADZU MobileDaRt MUX-100Dsystems are among quality digital X-ray machines.

Film (analog) X-ray machine advantages:
• the operational principles for these machines are usually familiar to all X-ray department staff;

• X-ray department performance will not suffer from computer malfunctions, if any;

• they are reliable and can be operated for many years continuously;

• relatively low cost of fim X-ray machines compared to the modern digital ones;

• some modern film X-ray machines support digital functionality, so, if necessary, you can upgrade them to a digital machine.

The GE AMX-4 Plus,GE Proteus XR/a, GE Optima XR200amx systems are among the top film X-ray machines.

Thus, only being aware of all the details will allow you to choose the right machine for you, and what is also important, to get a bargain. In its turn, this will ensure your X-ray department’s quality and proper performance in any clinic.

https://zhongmeixx1.blogspot.com/2015/03/vs-800-external-suction-vacuum-sealing.html
https://www.dentaltown.com/blog/post/12818/how-to-choose-dental-micromotor-fit-for-your-clinic

Do you know how dangerous aerosols in your dental practice?

The purpose of the present study was to determine the microbial atmospheric contamination during initial periodontal treatment using a modern piezoelectric scaler and to evaluate the efficacy of two commercially available mouth rinses (0.2% Chlorhexidine mouth rinse and Listerine) in reducing bacterial contamination when used as a pre-procedural rinse, with and without high volume evacuation (Aerosol reduction device). MATERIALS AND METHODS:Subjects for the study were selected from the outpatient Department of Periodontics, Sri Siddhartha Dental College and Hospital, Tumkur, India. Total 60 patients were taken for the study and on the basis of inclusion and exclusion criteria’s they were divided into three groups. 

The sampling was carried out in two stages before and after implementing a set protocol. Total duration of study was four months. MICROBIOLOGICAL EVALUATION:The samples (blood agar plates) were transported immediately to the Department of Microbiology, Sri Siddhartha Medical College, Tumkur for: Identification of microorganisms as per standard procedures (Gram stain, Biochemical Test, Species Identification).Counting the number of colonies formed on blood agar plates using colony counter unit. 

RESULTS:Out of all the three pre-procedural rinses 0.2% w/v Chlorhexidine is the best in reducing aerobic bacteria (CFU) followed by Listerine and then Water. CONCLUSION:The following conclusion was drawn that the use of pre-procedural rinses along with the use of high volume suction apparatus significantly reduced the aerosol contamination and hence chances of cross-infection in the dental units.

More related products to kill virus at:https://www.dentalsalemall.com/category-238-b0-Oral-Aerosol-Suction-Unit.html

Tips on choosing the right ozone generator for your application
Some Ozone Generator Know You Should Know

Background
Aerosols and spatter are concerns in health care owing to their potential adverse health effects. The Isolite illuminated isolation system (Isolite Systems) and a saliva ejector were compared for aerosol and spatter reduction during and after ultrasonic scaling.

Methods
Fifty participants were randomized to control (n = 25, saliva ejector) or test (n = 25, Isolite) groups and received a prophylaxis with an ultrasonic scaler. Aerosols were collected in a petri dish containing transport media, dispersed, and plated to anaerobic blood agar to determine colony-forming units (CFUs). The authors analyzed the data using a t test.

Results
No significant difference occurred between groups in aerosol and spatter reduction (P = .25). Mean (standard deviation) of log10 CFUs per milliliter collected during ultrasonic scaling in the control and test groups were 3.61 (0.95) and 3.30 (0.88), respectively. All samples contained α-hemolytic streptococci, and many samples contained strictly oral anaerobes.

Conclusions
A significant amount of contamination occurred during ultrasonic scaling in both groups, as indicated by high numbers of CFUs and the identification of strictly oral anaerobes in all plates.

Practical Implications
Neither device reduced aerosols and spatter effectively, and there was no significant difference in reduction between the 2 devices. Additional measures should be taken with these devices to reduce the likelihood of disease transmission.

If you have any problem in choosing external dental aerosol suction system, you can feel free to contact us.

How to Clear Dentistry Aerosols with Aerosol Suction Unit
Do you know aerosols is so dangerous in you dental clinic

UV light is highly effective at killing germs
The three main types of UV rays are UVA, UVB, and UVC. Because UVC rays have the shortest wavelength, and therefore highest energy, they are capable of killing bacteria and viruses, also called pathogens. UVC light has a wavelength of between 200 and 400 nanometers (nm). It is highly effective at decontamination because it destroys the molecular bonds that hold together the DNA of viruses and bacteria, including “superbugs,” which have developed a stronger resistance to antibiotics.

Powerful UVC light has been regularly used to decontaminate surgical tools and hospital rooms. A study that included 21,000 patients who stayed overnight in a room where someone had been previously treated found that sanitizing a hospital room with UV light in addition to traditional methods of cleaning cut transmission of drug-resistant bacteria by 30%. This is partly because UVC light can effectively sanitize hard-to-clean nooks and crannies. UVC light also works by destroying the DNA of pathogens, which makes it effective against “superbugs.”

However, it’s not quite as good as we might have hoped. In a recent study – which looked at whether UVC could be used to disinfect PPE – the authors found that, while it is possible to kill the virus this way, in one experiment it needed the highest exposure out of hundreds of viruses that have been looked at so far. The amount of ultraviolet required varied widely, depending on factors such as the shape and type of material the virus was on.

Nevertheless, a concentrated form of UVC is now on the front line in the fight against Covid-19. In China, whole buses are being lit up by the ghostly blue light each night, while squat, UVC-emitting robots have been cleaning floors in hospitals. Banks have even been using the light to disinfect their money.

How to use a UV light to kill germs at home
UV Disinfection Lamp available to consumers come in various forms, including boxes, bottles, and covered wands. Each has its own set of instructions for how to use the light to kill germs, with specifics on things like how long the sanitation takes and, in the case of wands, how close it has to be to the object you’re trying to sanitize. Larger box-shaped versions fit tablets, toys, and baby bottles.

Why Use UV Sterilization?
UV sterilization with UV sterilizer cabinet is not a new technology, having been discovered in 1879. Discovered to be a useful technology for cleaning infectious spaces, more studies were done to determine the exact beneficial nature of UV for sterilization purposes. Since the 20th century, UV sterilization has been used to disinfect things like water and work surfaces. UV light is a shorter wavelength than visible light, and is able to penetrate and destroy the bodies of viruses and bacteria.

The use of UV sterilization, or ultraviolet germicidal irradiation, has been found to be extremely effective. Sources of UV sterilization can kill over 99% of viruses, bacteria, and fungi in an extremely short amount of time. Due to this effectiveness, various types of UV treatments and specialized UV devices for sterilization have been developed. This can make it difficult to determine what kind of UV device provides the best results for your facility.

Where Can UV be Used?
While UV sterilization can be used as a supplemental infection control strategy for almost any situation, such as disinfecting water and work surfaces as mentioned above, the efficiency of the sterilization make other specialized spaces accessible as well.

One of the best and fastest growing spaces for UV utilization is in hospital construction and renovation. Keeping hospital worksites from spreading pathogens to other patients is key for infection control solutions. UV sterilization techniques help provide a standard that can be hard for manual cleaning to meet. By providing a consistent procedure for disinfection, UV sterilization in hospitals is invaluable.

How Can UV be Utilized?
Beyond water and surface sterilization, UV can be used as a sterilization technique for other types of disinfection. UV can disinfect the air in isolated spaces, which is particularly beneficial in a hospital setting. Installing UV devices like lamps and lights at the top of rooms and other areas of circulation can disinfect the air as it moves, improving both the air quality and the effectiveness of the UV sterilization.

If you are have any problem in choosing personal protective equipment such as dental face shield and dental protective goggles, you can feel free to contact our customer service.

What is the reason that has led to developing a dental chip?

Your dental practice suction machine is not the most glamorous piece of equipment in your office, but without it, your day comes to a screeching halt. The newest dental vacuum systemsare being made to be stronger and more durable than ever while keeping the noise level to a minimum. Remember to find a system with the capacity to provide suction to every one of your treatment rooms. Space is another important consideration when looking for a vacuum. Be sure the system you choose will fit in your practice utility room. If you are renting your facility, or are in a shared space it is important to make sure the vacuum you choose doesn’t conflict with any restrictions or leasing agreements. As a vital piece of equipment in your practice, it is important to have your vacuum system up and running every day.

What is the difference between Normal Vacuum System and Central Vacuum System?
Attentive dentists will find that when they purchase dental units from us, our sales will ask them if need to connect to the central vacuum system. This is since the piping inside the dental unit needs to be specially designed to match the connection of the central vacuum system for the best suction effect. So, what is the difference between Normal Vacuum system and Central Vacuum System?

Normal Vacuum System
Normal Vacuum System the suction power is from the dental unit, NO additional auxiliary machines.
The dental unit’s suction power depends on air and water pressure. Air pressure control strong suction, water pressure control weak suction.
The advantages of this design is don’t need to connect a central suction machine, you can save place and money. The disadvantages of this design is:

1. Unstable and very weak suction power.
2. Easy to block.
3. Expendable resources (water and compressed air).
4. Failure to meet surgical suction requirements.
5. Easy to produce secondary pollution.

Dry Vacuum System
Advantages

• Reduction or elimination of water used for suction, which decreases the ongoing cost of the unit dramatically (water bill reduction)
• Variable speed motor allows a more consistent vacuum flow for multiple users
• More efficient electrical use reduces electrical utility costs
• Less maintenance required
• If the motor fails, the system can be connected to a shop vacuum to provide emergency suction until a TechEdge service technician arrives to fix.

Disadvantages

•The initial cost of equipment is significantly higher than a wet vacuum system
• Dry vacuum unit can be loud, requiring its installation location to be farther away from the treatment rooms
• Larger square footage requirement in mechanical room due to size of equipment and requirement for venting/cooling
• Cost to install second motor for redundancy signifi cantly higher than wet options.

Dental Chair Features and Performance – Making a Smart Investment

Watching television commercials, and the apparent growing obsession with white teeth in the United States, you would think that dental health is of primary importance to most Americans. And yet millions fail to follow basic guidelines on oral health, such as regular cleanings. There are many reasons for this, the most obvious being the high cost of dental care. Another is lack of insurance, which again places patients in the difficult position of caring for their teeth versus more immediate expenses.

According to the American Dental Association (ADA), this lack of dental care comes at great expense to a person’s overall health. Here are a few of the ADA’s sobering statistics:1

Twenty-seven percent of adults over 20 have untreated cavities.
Ninety-one percent of Americans over 20 have had cavities at some point in their lives.
There are substantially greater rates of untreated dental disease among African Americans (42 percent) and Hispanics (36 percent).

The Centers for Disease Control and Prevention, in another report, offers similarly grim statistics:2

Percent of children ages 5-19 with untreated dental cavities: 18.6 (2011-2014)
Percent of adults ages 20-44 with untreated dental cavities: 31.6% (2011-2014)
Percent of children ages 2-17 with a dental visit in the past year: 84.7% (2015)
Percent of adults ages 18-64 with a dental visit in the past year: 64.0% (2015)
Percent of adults ages 65 and over with a dental visit in the past year: 62.7% (2015)
Among adults ages 20–64, 91% had dental cavities and 27% had untreated tooth decay.
Adults ages 20–39 were twice as likely to have all their teeth (67%) compared with those ages 40–64 (34%).
About one in five adults ages 65 and over had untreated tooth decay

The ADA stresses the importance of prevention in staving off dental and gum disease. The problem is access. Many people, especially those in rural or impoverished regions, do not have access to a dentist. Some, like the elderly, do not have insurance coverage, and their fixed incomes leave little room for dental expenses.

That’s where portable dentistry comes in. This new trend in dental access brings the dentist to the patient, especially those in need. Common localities where mobile dentists operate are:

Nursing homes
Inner city schools
Migrant communities/programs
Rural/remote communities
Native American reservations

Although the scope of practice is more limited in mobile dentistry, and complex procedures are difficult if not impossible in some instances, mobile dental suction machine can provide many treatments, most geared at preventive care.