Hygiene Tribune U.S. No. 4, 2016
Testing toothpastes - toothbrushes / Industry News
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[1] =>
HYGIENE TRIBUNE
The World’s Dental Hygiene Newspaper · U.S. Edition
MAY 2016 — Vol. 9, No. 4
www.dental-tribune.com
Testing toothpastes, toothbrushes
Improving dental hygiene products through virtual brushing
D
esigning toothpastes and
toothbrushes is a time-consuming process involving
the production and testing of
numerous samples. Using a new type of
simulation, various parameters such as
bristle shape and abrasive particle size
can be modified with just a click. This enables manufacturers to improve the quality of new dental care products and bring
them to market more quickly.
When we wake up in the morning, there
is a fur-like coating on our teeth: this is a
biological film that forms overnight. Over
time, this can lead to the development of
caries — which is why it is critical that we
remove this “rug” using a toothbrush.
There is a large selection of dental hygiene products on the market, including brushes whose bristles are rounded,
pointed, hard, and soft. There are also
brushes with bristles of varying lengths.
Until now, to determine which ones clean
the most thoroughly while doing as little
damage to the tooth enamel as possible,
manufacturers have had to conduct experiments. This was also the case when
selecting the right abrasive particles to be
used in toothpastes.
Various toothpaste formulations had
to be mixed and then tested on artificial
tooth enamel models — a laborious task.
Another drawback to this approach is that
the brush, paste and enamel can be analyzed only as a complete system, which
means that manufacturers have a difficult time determining which effects observed in these experiments are derived
from which of the various parameters.
Help has arrived in the form of a new
type of simulation developed by researchers at the Fraunhofer Institute for
Mechanics of Materials IWM in Freiburg,
Germany. “With our procedure, manufacturers of dental hygiene products can
determine the cleaning effectiveness of
each individual parameter in a fast, economical and reliable manner,” says IWM
scientist Dr. Christian Nutto. “Unlike in
real-world experiments, the individual
parameters in the simulation can be easily modified — be it the size, shape and
quantity of abrasive particles in a toothpaste, or the material from which they are
made, or the shape and elasticity of the
bristles.”
Low viscosity
toothpaste suspension
Fig. 1
High viscosity
toothpaste suspension
Simulated tooth brushing
Researchers can increase the scope of the
experiments far beyond what is possible
in real-world testing, and that makes a
noticeable difference in the quality of
the products. What effects do the shape
and stiffness of the bristles have when
brushing? How do the different abrasives
or toothpaste viscosity affect the enamel,
and how do they affect their intended
target, the biofilm on the teeth? Simulation testing can deliver reliable answers
to questions such as these, and it does so
long before the manufacturer ever mixes
the toothpaste.
Nutto relies on SimPARTIX® simulation
software developed at the IWM, which
uses the Smoothed Particle Hydrodynamics (SPH) particle simulation method. “We
specify characteristics for the abrasive
particles such as density, shape and fill
factor,” he says. Even parameters for the
tooth enamel are included. The virtual
toothbrush bristle is then rubbed over
the tooth enamel, with the simulation
providing data on how the scrubbing particles interact with the elastic bristle. It
also calculates cleaning effectiveness, as
well as the aggressiveness of the abrasives
Fig. 2
Simulation of pressure distribution in suspensions of varying viscosities with spherical abrasive
particles as a toothbrush bristle rubs against tooth enamel: The more viscous toothpaste
suspension leads to greater abrasion on enamel. Fig. 1: Lower viscosity (1 mPas). Fig. 2: Higher
viscosity (20 mPas). Left-side images show pressure distribution in the suspension (a deeper red
indicates higher pressure). Right-side images show stress input against the tooth enamel by
abrasive particles (a deeper red indicates greater abrasion). Images/Provided by Fraunhofer IWM
against the tooth enamel. Here, the team
from the Powder Technology, Fluid Dynamics group can vary the speed at which
the bristles pass across the enamel as well
as their pressing force. The SimPARTIX
team, together with the Fraunhofer Institute for Algorithms and Scientific
Computing SCAI, designed an additional
software tool to integrate the particle
simulation into standardized simulation
programs.
But do the findings correspond to reality? The comparative experiments were
conducted by Dr. Andreas Kiesow and his
staff at the Fraunhofer Institute for Microstructure of Materials and Systems IMWS
in Halle as well as the MikroTribologie
Centrum µTC in Karlsruhe. In the tests, a
brush bristle was placed in a fastener and
brushed at a constant speed across an artificial tooth enamel model onto which
toothpaste had been applied. It was concluded that the simulation can precisely
predict how the toothpaste and bristles
will affect the tooth enamel. At a later
stage, it will also be able to predict the ef” See TESTING, page C2
Downtown Pittsburgh to host ADHA Center for Lifelong Learning
Some 2,000-plus attendees are expected at the American Dental Hygienists’
Association Center for Lifelong Learning (CLL) at the 93rd Annual Session. The
event will be from June 8–14 at the David
Lawrence Convention Center in Pittsburgh. The program will feature a diverse
offering of continuing education programs within six different tracks.
Follow a track, or plot your own
Attendees can choose from 30 C.E. programs and elect to follow a specific track,
or diversify their selections based on interest and educational requirements.
New this year, the ADHA’s Institute for
Oral Health is hosting the In Motion: 5K
Run/Walk/Fun. Taking place on Thursday,
June 9, at 8 p.m. along Pittsburgh’s riverfront, the event will enable attendees to
participate in a unique fundraising activity to support the institute’s commitment
to empowering, supporting and developing education and research opportunities
for dental hygiene professionals.
“ADHA’s CLL at the 93rd Annual Session is a one-of-a-kind, all- encompassing
event for dental hygiene professionals
and students,” said ADHA President Jill
Rethman, RDH, BA. “Each year, this signature event offers outstanding opportunities that include excellent educational
content, fun networking events and a
rewarding community outreach project.
With the introduction of the In Motion:
5K Run-Walk-Fun, we’re engaging dental
hygienists to participate in an exciting
event that supports overall health and
wellness. In addition, this event promotes
opportunities for dental hygiene research
and education by benefiting the ADHA’s
Institute for Oral Health.”
This year’s CLL again features a community service day on June 8; plenary
sessions slated for June 9 and 11; and an
two-day (June 10–11) exhibition hall showcasing more than 125 companies involved
in oral health and dental hygiene.
“CLL is an event that offers a unique
opportunity in the oral health and dental hygiene community,” said ADHA CEO
Ann Battrell, MSDH. “All of our attendees
benefit from not just the education but
the experience, the networking, the engagement. They have the opportunity to
interact with their peers, corporate sponsors and mentors in the field to build their
knowledge in oral health and create new
career opportunities.”
To learn more about the ADHA’s CLL
at the 93rd Annual Session, you can visit
www.adha.org/annual-session.
(Source: ADHA)
[2] =>
INDUSTRY NEWS
C2
Barrier protection critical
with any dental-care glove
Quality, safety top priorities
While caring for their patients,
dental and health care profesMalaysia is the world’s largest
CDA
sionals are constantly exposed
medical gloves exporter (latex
BOOTH
to bodily fluids that may carry
and nitrile). Both quality and usNO.
2143
viruses and other infectious
ers’ safety are of top priority to
agents.
the nation’s glove industry. To this
It is therefore critical that the gloves
end, a quality certification program
these professionals use provide the best
(the Standard Malaysian Gloves, or the
possible barrier protection.
SMG) has currently been formulated for
latex examination gloves.
Natural rubber latex is effective
All SMG-certified gloves must comply
with stringent technical specifications
Many types of gloves are available today,
to ensure the gloves are high in barrier
but it is important to know that not all
effectiveness, low in protein and low in
gloves have the same barrier capability,
allergy risks, in addition to having exceldepending on the type of material used.
lent comfort, fit and durability — qualiFor example, natural rubber latex
ties that manufacturers of many syngloves have long been acknowledged for
thetic gloves are trying to replicate.
their very effective barrier properties,
while non-latex gloves, such as vinyl
Natural, sustainable resource
(polyvinyl chloride), have inferior barrier
capability as has been shown by numerLatex gloves are green products, derived
ous studies.
from a natural and sustainable resource,
Other synthetic gloves, such as nitrile
and are environmentally friendly. (You
and polyisoprene, perform much better
can learn more online by visiting www.
than vinyl but are more costly, especially
smg-gloves.com or www.latexglove.info).
polyisoprene gloves. Using gloves with
The use of low-protein, powder-free
inferior barrier capability could expose
gloves has been demonstrated by many
both the patient and user to harmful inindependent hospital studies to markedfections.
ly reduce the incidence of latex sensitiza-
tion and allergic reactions in workplaces.
More importantly, latex allergic individuals donning non-latex gloves can
now work alongside their coworkers
wearing the improved low-protein gloves
without any heightened allergy concern.
However, for latex-allergic individuals,
it is still important they use appropriate
non-latex gloves, such as quality nitrile
and polyisoprene gloves, that provide
them with effective barrier protection.
Extensive array of brand, prices
Selecting the right gloves should be an
educated consideration to enhance safety
of both patients and users.
For decades, gloves made in Malaysia
have been synonymous with quality and
excellence, and they are widely available
in an extensive array of brands, features
and prices.
They can be sourced either factory direct (www.mrepc.com/trade and click
“medical devices”) or from established
dental product distributors in the United
States.
(Source: Malaysian Rubber Export
Promotion Council)
“ TESTING, page C1
fectiveness of the toothpaste and brush at removing the biofilm from teeth.
Abrasive particles are a key component of toothpastes and serve to mechanically remove plaque from the teeth. But a good toothpaste should not
be overly abrasive, as over the years the friction can damage the enamel,
which does not regenerate. Furthermore, this damaging effect is far more
pronounced on the soft dentine. For this reason, the representative body for
dentists in Germany recommends that patients with exposed root surfaces
choose a toothpaste with a low abrasive effect.
About Fraunhofer
Fraunhofer identifies itself as Europe’s largest application-oriented research
organization. Its research efforts are geared to people’s needs: health, security, communication, energy and the environment. The company designs
products, and it improves methods and techniques.
(Source: Fraunhofer)
Ad
Simulation of interaction
between a toothbrush
bristle and a suspension
with spherical abrasive
particles.
Hygiene Tribune U.S. Edition | May 2016
HYGIENE TRIBUNE
Publisher & Chairman
Torsten Oemus t.oemus@dental-tribune.com
President & Chief Executive Officer
Eric Seid e.seid@dental-tribune.com
Group Editor
Kristine Colker k.colker@dental-tribune.com
Editor in Chief Dental Tribune
Dr. David L. Hoexter feedback@dental-tribune.com
Editor in Chief Hygiene Tribune
Patricia Walsh, RDH feedback@dental-tribune.com
Managing Editor
Robert Selleck r.selleck@dental-tribune.com
Managing Editor
Fred Michmershuizen
f.michmershuizen@dental-tribune.com
Managing Editor
Sierra Rendon s.rendon@dental-tribune.com
Product/Account Manager
Humberto Estrada h.estrada@dental-tribune.com
Product/Account Manager
Will Kenyon w.kenyon@dental-tribune.com
Product/Account Manager
Maria Kaiser m.kaiser@dental-tribune.com
Business Development Manager
Travis Gittens t.gittens@dental-tribune.com
EDUCATION Director
Christiane Ferret c.ferret@dtstudyclub.com
Tribune America, LLC
116 West 23rd Street, Suite 500
New York, NY 10011
Phone (212) 244-7181
Published by Tribune America
© 2016 Tribune America, LLC, All rights reserved.
Tribune America strives to maintain the utmost accuracy in its news and clinical reports. If you find a
factual error or content that requires clarification,
please contact Managing Editor Robert Selleck at
r.selleck@dental-tribune.com. Tribune America cannot assume responsibility for the validity of product
claims or for typographical errors. The publisher also
does not assume responsibility for product names or
statements made by advertisers. Opinions expressed
by authors are their own and may not reflect those of
Tribune America.
Editorial Board
Dr. Joel Berg
Dr. L. Stephen Buchanan
Dr. Arnaldo Castellucci
Dr. Gorden Christensen
Dr. Rella Christensen
Dr. William Dickerson
Hugh Doherty
Dr. James Doundoulakis
Dr. David Garber
Dr. Fay Goldstep
Dr. Howard Glazer
Dr. Harold Heymann
Dr. Karl Leinfelder
Dr. Roger Levin
Dr. Carl E. Misch
Dr. Dan Nathanson
Dr. Chester Redhead
Dr. Irwin Smigel
Dr. Jon Suzuki
Dr. Dennis Tartakow
Dr. Dan Ward
[3] =>
Dental Tribune U.S. Edition | May 2016
INDUSTRY NEWS
C3
Protect your game face: A mouthguard PSA
For this year’s National Facial Protection Month (April), five of the nation’s
top dental associations joined forces to
remind athletes and recreational sports
players to wear mouthguards to protect
their teeth. Mouthguards are an essential
piece of athletic gear and can help prevent serious, painful facial injuries that
affect the mouth and teeth.
The dental experts at the Academy
for Sports Dentistry (ASD), American
Academy of Pediatric Dentistry (AAPD),
American Association of Oral and Max-
illofacial Surgeons (AAOMS), American
Association of Orthodontists (AAO), and
the American Dental Association (ADA)
urge parents, caregivers, athletes and
coaches to be proactive about staying
safe by using a mouthguard.
The five associations pooled together
the following mouthguard-related statistics to keep in mind as spring sports
season begins:
3 – Types of mouthguards: Custom-
fitted mouthguards are made by your
dentist for you personally. Stock mouth-
guards come pre-formed and may offer a
bulky fit. Boil and bite mouthguards are
softened in boiling water and then inserted and allowed to adapt to the shape
of your mouth.
5 – The number of top dental associa-
tions that encourage athletes and recreational sports players to wear mouthguards to keep their teeth and smiles
intact.
7 to 11 – The ages during which
impact protection, according to the company. The PF2’s unique design also enables
it to be re-fit by the user multiple times.
“Being a leader in this field means we
need to set the bar high for new products
and innovation,” said Michael Prozzillo,
vice president of sales for Keystone. “The
PF2 will change the way athletes buy
mouthguards, but also how the dentist
sells them.” The PF2 mouthguard is available in either black or white. The company
reports that there will be bulk purchasing
available in the near future, which will include a display piece and literature on the
product suited for dental offices.
letes are more likely to suffer harm to
the teeth if they’re not wearing a mouthguard.
All – How many sports during which
you should wear a mouthguard. Collision
and contact sports may be high-risk for
the mouth, but you can still experience
a dental injury from other sports such as
gymnastics or skating.
(Source: American Association
of Oral and Maxillofacial Surgeons)
children are most vulnerable to sportsrelated mouth injuries.
New mouthguard has athletes smiling
Keystone Industries, the U.S.-based company that manufacturers some of the
world’s top mouthguard products, has
launched the latest product in its Pro-Form
Mouthguard line — the PF2 mouthguard.
Unlike laminated mouthguard products
that require a dentist to custom fit to the
patient, the PF2 mouthguard is a do-ityourself guard that provides an accurate
custom fit without any need to take impressions of the teeth.
With the elimination of dentist appointments and impressions, the price of this
guard is significantly lower than customfit mouthguards while still providing high-
60 – The number of times that ath-
CDA
BOOTH
NO. 365
Multiple color options will also
be available soon, similar to the
Pro-Form line of color options, according to the company.
Custom fit in less than a minute
“You won’t be able to get ahold of another
mouthguard that can be custom fit in under a minute and provide the same beneficial features,” said Derek Keene, Keystone’s
vice president of marketing and product
development. “We’re excited to watch PF2
take off and provide significant value to
our customers and athletes across the
country.”
Keystone Industries’ PF2 mouthguard
provides a do-it-yourself custom fit with no
need to take impressions of the teeth.
Photos/Provided by Keystone Industries
To keep up to date on the PF2 and Keystone, go to www.keystoneindustries.com.
You also can follow the company on all the
major social media platforms.
(Source: Keystone Industries)
Ad
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