DT Asia Pacific No. 2, 2019DT Asia Pacific No. 2, 2019DT Asia Pacific No. 2, 2019

DT Asia Pacific No. 2, 2019

Asia Pacific News / World News / Interview: “Parents tell us that their children are now brushing correctly and independently”

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DENTALTRIBUNE
The World’s Dental Newspaper · Asia Pacific Edition

Published in Hong Kong

www.dental-tribune.asia

GIANT PANDA TEETH

Scientists from China and US have
discovered what is the key to pandas’ teeth lasting a lifetime. Their
obsevations inspire the design of
artificial durable ceramics.

Vol. 18, No. 02

SUBSIDISE DENTAL WORK

INTERVIEW

Lower sio-economic groups in New
Zealand cannot afford dental treatments. Government should be looking for more ways to better subsidise dental care for adults.

” Page 02

Dr Jongho Choi, Brush Monster cofounder and CEO of Kitten Planet,
talks about an interactive mobile
app that teaches children healthy
brushing habits.

” Page 04

” Page 11

Scientists discover oral cancer biomarkers
associated with patient survival
By DTI
DUNEDIN, New Zealand/KOLKATA,
India: In a recent study, researchers
have discovered epigenetic markers that are markedly different in
oral cancer tissue compared with
the adjacent healthy tissue in patients. This study is one of the first
to identify epigenetic markers in
oral cancer. Identifying these markers could help detect early signs of
cancer and significantly improve
patient survival rates.
The study was conducted by researchers from the University of Otago
in New Zealand and the Indian Statistical Institute (ISI) in Kolkata. The research team recruited 16 oral cancer
patients in India who either smoked
or chewed tobacco or had mixed habits, and took samples of their tumours
and adjacent tissue. After isolating
the DNA in the samples, the researchers discovered regions with altered
epigenetic profiles in tumour cells
compared with adjacent cells.

in oral cancer, using cutting-edge
approaches,” said co-author Dr Aniruddha Chatterjee, Senior Research
Fellow and Rutherford Discovery
Fellow in the Department of Pathology at the Dunedin School of Medicine at the University of Otago. The
findings showed that the arrangement of a certain epigenetic mechanism, called DNA methylation,
might be responsible for dictating
gene expression and the spread of
abnormal cells. “By validating in a
larger cancer cohort, we have shown
that a subset of these biomarkers
is significantly associated with poor
prognosis of patients,” Chatterjee
said.
The findings of a new study could help decrease high oral cancer mortality in
developing countries. (Photograph: Matej Kastelic/Shutterstock)

Epigenetics can alter gene expression in cancer cells without
changes to the DNA sequence and
can cause tumour progression.

“This phenomenon is relatively new
and understudied, particularly in
oral cancer. This study is one of the
first to identify epigenetic markers

The age-adjusted incidence of
oral cancer in the world is estimated
at four cases per 100,000 people,
according to the World Health Organization. This oral disease is more
common in men and in older
people, and varies considerably by

socio-economic condition. According to the 2019 report of “India
Against Cancer”, of the 300,000
cases of tobacco-associated oral
cancer detected globally, 86 per cent
are from India. Additionally, late
diagnosis and poor prognosis are
key problems associated with the
high mortality rate of this cancer
in developing countries. The research group was surprised to find
such broad differences in the oral
cancer tissue compared with adjacent healthy tissue in the same patients. “We were also surprised to
see that small molecules, called
microRNA, were methylated or demethylated in the tumours from
smokers or chewers or mixed habits,
suggesting that therapeutic intervention might be different in patients depending on the way the
tobacco was abused,” said lead
author Dr Roshni Roy, professor in
the Department of Pathology at the
University of Otago.

Green light for XIVIA Xylitol
dental health claims

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By DTI
at an effective daily dosage adjusted
from 10–25 g down to 5–10 g, a similar amount to that of international
dental association standards.
In South Korea, functional ingredients that have received a health
claim approval undergo a mandatory
re-evaluation every ten years. With
the latest re-approval, DuPont Nutrition & Health continues to work with
manufacturers to create sugar-free
products with oral health in mind.

DuPont Nutrition & Health is the first company in South Korea to receive reapproval for xylitol health claims. (Photograph: morisfoto/Shutterstock)

CHEONGJU, South Korea: South Korea’s Ministry of Food and Drug
Safety has issued a re-approval of
the health claim that consumers
from 3 to 80 years old of the sweetener XIVIA Xylitol have a reduced
risk of dental caries. The manufacturer, DuPont Nutrition & Health,

is the first company in the country
to receive such re-approval.
In the re-evaluation of the sweetener, the ministry reviewed 146 research reports, including 94 clinical
trials, and concluded that XIVIA Xylitol helps reduce the risk of caries

XIVIA Xylitol is claimed to deliver sweetness at 50 per cent of the
calorie level of sugar. In addition, it
is preferred for its relatively low
glycaemic index, which makes it
suitable for diabetic and health-conscious consumers. In addition to
replacing sugar in chewing gum
and other confectionery applications, xylitol is commonly incorporated into oral hygiene products,
including toothpaste, mouthwash
and teething gels.

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[2] =>
02

ASIA PACIFIC NEWS

Dental Tribune Asia Pacific Edition | 02/2019

Scientists draw inspiration from
giant panda teeth
By DTI
SHENYANG/HEFEI/LANZHOU, China/
BERKELEY, Calif., US: Tooth enamel
protects teeth over the lifetime of
an organism by providing a hard
surface resistant to wear and tear
and by withstanding impacts without breaking. According to researchers, the giant panda has particularly
resistant tooth enamel, which can
recover its structure and geometry
to counteract the early stages of
damage.

Hydration plays a key role in
the process. The viscoelasticity of
the organic-rich matrix surrounding the mineral prisms and fibres
facilitates self-recovery, while the
presence of water decreases the
width of any cracks that do form,
with only a minor cost in terms of
hardness.
“Our findings identify a novel
means by which the tooth enamel
of vertebrates develops an exceptional durability to accomplish its
functionality,” added Liu. “The
self-recovery process represents a
new source of durability that differs markedly from the conventional
protocol of fracture mechanics.”

The team which investigated
the tooth structure of the panda
was made up of researchers from
the Institute of Metal Research of
the Chinese Academy of Sciences
in Shenyang, the University of Science and Technology of China in
Hefei, Lanzhou University of Technology in Lanzhou and the University of California, Berkeley in the
US. They believe their observations
could be replicated in the tooth
enamel of all vertebrates, including
humans, and inspire the design of
artificial durable ceramics.
“Tooth enamel possesses an exceptional durability and plays a
critical role in the function of teeth,
however, [it] exhibits a remarkably
low resistance to the initiation of
large-scale cracks comparable to
geological minerals,” said Prof. Robert O. Ritchie, who led the study.
The ingenious design of the panda’s tooth enamel, which has to withstand a daily diet of bamboo—a ma-

Scientists from China and the US have discovered that hydration is the key to pandas’ teeth lasting a lifetime.
(Photograph: Hung Chung Chih/Shutterstock)

terial of remarkable strength and
toughness—comprises parallel micro-scale prisms made up of vertically aligned nanoscale fibres of the
mineral hydroxyapatite embedded
in an organic-rich matrix. When
there is an impact on the enamel, a
variety of different deformation

mechanisms take place to mitigate
the growth of small cracks and prevent the formation of large cracks.
“The tooth enamel is capable of
partially recovering its geometry and
structure at nano- to micro-scale dimensions autonomously after defor-

mation to counteract the early stage
of damage,” explained first author
Zengqian Liu. “[This] property results
from the unique architecture of tooth
enamel, specifically the vertical alignment of nanoscale mineral fibres and
micro-scale prisms within a water-responsive organic-rich matrix.”

As the architecture of the panda’s tooth enamel is essentially similar to that of other vertebrates, the
researchers believe that this self-recovery behaviour is likely to occur
in tooth enamel in general. “Our
findings also offer inspiration for
the development of artificial, durable, self-recoverable ceramic materials,” said Ritchie. The team is hoping to develop tooth enamel-inspired
self-recoverable durable materials
by introducing shape memory polymers at the interface of ceramics.
The study, titled “Hydrationinduced nano - to micro -scale
self-recovery of the tooth enamel
of the giant panda”, was published
in the November 2018 issue of Acta
Biomaterialia.

New oral appliance could help
manage sleep apnoea
By DTI
went mandibular advancement appliance (MAA) therapy. The researchers used multi-slice computed tomography in order to measure the
regional effects of the appliance on
the upper airway.

Scientists from China and the US have discovered that hydration is the key to pandas’ teeth lasting a lifetime.
(Photograph: Hung Chung Chih/Shutterstock)

HIROSHIMA, Japan: Researchers have
recently developed a novel treatment to improve the quality of sleep
for patients who suffer from mild
to moderate obstructive sleep apnoea (OSA). Using 3-D imaging of
the airways with the patients su-

pine to simulate sleeping conditions, the study confirmed that the
treatment is effective at opening
the airways and warrants further
collaboration between dentists and
doctors in the treatment of sleep
apnoea.

The treatment was developed
by researchers from the Department of Orthodontics at Hiroshima
University Hospital. The participants included eight men and five
women who were diagnosed with
mild to moderate OSA and under-

“This is like when you have to
use glasses. You have to wear them
every time you want to see properly so [patients] have to wear this
appliance every time [they] want
to sleep better,” said study co-author Dr Hiroshi Ueda, an associate
professor in the Graduate School
of Biomedical and Health Sciences
at Hiroshima University.
Previous research typically measured patients standing up, a technique that does not simulate sleeping conditions. The current study
measured the change in airway space
of patients lying flat. It demonstrated
that the proportional size of the
soft-tissue volume, that is, the soft
palate and tongue in the oro-hypo-

pharyngeal region, significantly decreased when the patient was wearing an MAA. This forward displacement of the soft tissue thereby increased the retro-glossal airway
space, except the nasopharynx,
three-dimensionally and therefore
allowed for easier breathing.
According to the researchers,
further investigations that focus
on 3-D airway enlargement analysis of various sites affected by MAA
therapy are required in a larger
number of patients with OSA. This
would help scientists understand
the pathogenesis of OSA and the
clinical applicability of MAA fully.
The study, titled “Multislice
computed tomography assessment
of airway patency changes associated with mandibular advancement
appliance therapy in supine patients with obstructive sleep apnea”,
was published online on 3 March
2019 in Sleep Disorders.


[3] =>
03

ASIA PACIFIC NEWS

Dental Tribune Asia Pacific Edition | 02/2019

State government bans advertising of junk
food on publicly owned space
By DTI
BRISBANE, Australia: An unhealthy
diet can be a contributing factor to
poor oral and general health, and
advertising plays a key role in this
regard. Seeking to curb this, the
Queensland government has announced a ban on the promotion
of unhealthy food and drinks on
the advertisement spaces it owns.
The move is the first of its kind by
an Australian state.

increased availability of free water,
in schools, government institutions,
children’s sports and places fre-

quented by children. In addition,
Rethink Sugary Drink suggested
the creation of state and local gov-

ernment policies that reduce the
availability of sugary drinks in
workplaces, government institu-

tions, healthcare settings, sports
and recreation facilities, and other
public places.
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In a move that is the first of its kind
in Australia, the Queensland
government has announced a ban
on the promotion of unhealthy food
and drinks on the advertisement
spaces it owns. (Photograph: beats1/
Shutterstock)

Rethink Sugary Drink, a partnership of 19 leading health and
community organisations, including the Australian Dental Association, praised the decision. In a statement, Craig Sinclair, head of the
prevention division at Cancer Council Victoria, a partner of Rethink
Sugary Drink, placed particular
focus on the need to provide supportive, healthy environments for
children where the considerable
negative impact on sugary drinks
can be tackled.

In addition to praising the decision by the Queensland government, Rethink Sugary Drink recommended a public education campaign supported by government
that highlights the health impacts
of consuming drinks high in sugar.
The group also proposed comprehensive mandatory restrictions by
state governments on the sale of
sugar-sweetened drinks, as well as

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“Whether that is on their walks
to school, while waiting for the bus
or even when visiting sports and
community centres, the presence
of sugary drink marketing is overwhelming, making messages about
healthier options more difficult to
hear,” noted Sinclair.

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[4] =>
04

ASIA PACIFIC NEWS

Dental Tribune Asia Pacific Edition | 02/2019

Lower socio-economic groups in New Zealand
cannot afford urgently needed dental procedures
By DTI
AUCKLAND, New Zealand: Socially
disadvantaged adults in New Zealand cannot afford dental treat-

ments, even if in great pain, resulting in dangerous do-it-yourself
procedures. Consequently, various

representatives of the health sector
are calling for the government to
take action.

In a recent statement, the New
Zealand Dental Association (NZDA)
called for better government fund-

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ing to enable low-income adults to
access dental care. Even though New
Zealand adults have experienced
great improvements in oral health
since the 1980s, still many patients
only visit a dentist when a dental
problem occurs, and in particular,
low-income adults see the cost as a
significant barrier.
“Some truly cannot afford care,
and for these groups we must do
better, and that involves working
with government on a better deal,”
said Dr Bill O’Connor, President of
the NZDA.

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The New Zealand Dental Association
is urging the government to provide
affordable dental care for adults.
(Photograph: Andrey_Popov/
Shutterstock)

Mike Naera, health advocate in
Rotorua, commented: “Maori are
over-represented in the lower socio-economic demographic and
they sacrifice everything so they
can live day-to-day. A lot of [them]
can’t afford dental work so their
options are to remain in pain or
extract their teeth themselves. The
consequences of paying for dental
care would be sacrificing food on
the table. The government should
be looking for more ways to better
subsidise dental work so our families don’t have to keep suffering.”
According to Dr Sherry Sembhy,
from Rotorua Dentists, self-dentistry is dangerous, as people do
not know what they are doing, do
not understand the anatomy of
their teeth and use unsterile tools,
which make the condition only
worse. Infections, abscesses, swelling and broken teeth and jaws were
some of the possible outcomes of
the home procedures which Sembhy said could end up costing even
more in repairs.


[5] =>
Dental Tribune Asia Pacific Edition | 02/2019

05


[6] =>
06
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Dental Tribune Asia Pacific Edition | 02/2019

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ADA CERP is a service of the American Dental Association to assist dental professionals in identifying quality
providers of continuing dental education. ADA CERP does not approve or endorse individual courses or
instructors, nor does it imply acceptance of credit hours by boards of dentistry.


[7] =>
Dental Tribune Asia Pacific Edition | 02/2019

07

ASIA PACIFIC NEWS

W&H Australasia expands its
sales range

“With the extension of the offer customers benefit from innovative
technologies “Made in Austria” as well as high-quality W&H support and
service”, says W&H Australasia General Manager Martin Rolfe.
Photo: © W&H

With surgical devices such as Implanted or Piezomed W&H offers dentists high-quality products that are characterized by
powerful motors, innovative features and maximum safety.
Photo: © W&H

From March 2019, W&H Australasia
Pty Limited, a subsidiary of the international W&H Group, starts the distribution of the W&H Oral Surgery
and Implantology (OSI) product range
in Australia. Customers benefit from
innovative technologies “Made in
Austria” as well as high-quality W&H
support and service.

functionality and reliability expected
from the profession. In addition to
the W&H Service Centre, W&H offers measurable added value to the
OSI end-users”, says W&H Australasia General Manager Martin Rolfe.

Since June 2018, W&H Australasia Pty Limited has been the exclusive distributor of Miele thermal
washer disinfectors (TWD) in the
dental field. W&H Australasia is now
expanding its sales activities in the
OSI application area to include W&H

surgical devices, W&H surgical
straight and contra-angle handpieces,
Osstell products as well as accessories and consumables. The merchandise are distributed through a national dealer structure specialising
in OSI distribution. The W&H Service
Centre is designed, equipped and
staffed to meet the high W&H service standards. For support and service, W&H is available by the following service number: 1300 613 988.
“I´m very pleased about the extension of the offer. With the OSI product portfolio, including the Implantmed with the Osstell ISQ module, W&H provides the relevant

Exciting time ahead
The expansion of the sales portfolio to include W&H OSI products
is the first step in 2019. Already in
May, a further expansion of the
W&H Prophylaxis & Periodontology program is planned. W&H’s
product range in the Restoration &
Prosthetics, as well as in the dental

Sterilization & Hygiene application
fields continues to be available
through A-dec Australia.

Global success with dental
technology made in Austria
Renowned for its quality, reliability and excellent service, W&H
is one of the top brands in the field
of dental technology. By combining
qualified employees, a strong focus
on Research & Development, a close
collaboration with users around
the world and a modern production
system, W&H creates innovative
product and service solutions.

For further information please
contact:
W&H Australasia Pty Limited
ABN: 33108399800
PO Box 240
Belrose NSW 2085
t: 1300 613 988
e: support.aus@wh.com
W&H Service Centre
10 Konando Terrace
Edwardstown SA 5039
t: 1300 613 988
e: service.aus@wh.com

Researchers find effective way to teach
visually impaired children oral hygiene
By DTUK
BELAGAVI, India: An adapted approach is required to train children
with visual impairment in oral hygiene and to motivate them to care
for their teeth regularly. Researchers at the KLE Academy of Higher
Education and Research in Belagavi
have tested different approaches
to oral hygiene training and compared their effectiveness.
For the study, 90 visually impaired children between the ages
of 12 and 15 were selected and randomly assigned to three equal
groups. The first group was trained
with verbal and tactile stimuli and
playful teaching methods, the second one was trained using braille,
while the third group received a
combination of these two approaches.

corded their knowledge and practice of oral hygiene and their attitude towards it.
The researchers found that the
combined hygiene training in the
third group reduced the children’s
plaque and gingival scores by 55
and 52 per cent compared with
the other two groups. In addition,
not only did the children’s practical implementation improve,
but their knowledge of the subject
and their attitude towards it did
too.
The best method of educating visually impaired children on oral health is by using a combination of different stimuli, a
study has found. (Photograph: wavebreakmedia/Shutterstock)

The researchers tested the dental hygiene of the children by assessing plaque and gingival status

at different intervals. The first assessment was after 21 days and the
final one took place after nine

months. In addition, before and
after the training, the children had
to fill out questionnaires which re-

The study, titled “Effectiveness
of different oral health education
interventions in visually impaired
school children”, was published in
the March 2019 issue of Special Care
in Dentistry.


[8] =>
08

ASIA PACIFIC NEWS

Dental Tribune Asia Pacific Edition | 02/2019

New research provides faster cheaper
method to treat periodontitis
By DTI
SENDAI, Japan: Periodontitis affects
many people and can have serious
effects on oral health. In new research originating from Japan, scientists have developed a cell-based
regenerative therapy approach. The
proposed therapy design promises
to address periodontitis without
some of the shortcomings and limitations of regenerative therapies
to date.
According to the researchers
from Tohoku University in Sendai,
the therapy will be faster and
cheaper. “The use of cell-based therapies is a promising approach to
treat human disease. This kind of
treatment paradigm is important
because commercially available
stem cells that represent a cell-based
therapy specifically developed to
treat periodontal tissue regeneration will reduce time and cost while
improving quality assurance,” said
lead author Prof. Masahiro Saito,
from the Department of Restorative
Dentistry at Tohoku University
Graduate School of Dentistry.
In a new approach to the treatment of periodontitis, the researchers transplanted stem cells from
healthy mini pigs to those who had
periodontal defects and, by doing
so successfully, overcome the shortcomings that can be associated with
autologous stem cell treatments.
By using this mini pig periodontal

Researchers in Japan have developed a new method to treat periodontitis that they believe will be faster, cheaper and more effective than anything available today.
(Photograph: Sergii Kuchugurnyi/Shutterstock)

defect model, they demonstrated
that allogeneic adipose-derived
mesenchymal progenitor stem cells
(ADMPCs)—mesenchymal stem
cells (MSCs) derived from fat tissue—are safe and effective for the
treatment of periodontitis.

“Our study demonstrates that
ADMPCs appear to be safe and not
triggering an immune response in
allogeneic settings, and as such it explores the potential use of allogeneic
MSCs for tissue regeneration. The
study is a powerful first step towards

further development of stem cellbased therapy for the treatment of
periodontal disease,” explained Saito.
The study, titled “Periodontal
regeneration by allogeneic transplantation of adipose tissue derived

multi-lineage progenitor stem cells
in vivo”, was published on 29 January 2019 in Scientific Reports. The
study was conducted in collaboration with researchers from Osaka
University in Osaka and Fujita Health
University in Toyoake.

Study links frailty to poor oral health
By DTI
MELBOURNE, Australia/LONDON, UK:
It is widely known that poor nutrition is a risk factor for frailty. Similarly, the link between nutrition and
oral health status has been estab-

lished in numerous studies. New
research has bridged the gap between
these two relationships, however,
and found that poor oral health is
independently associated with frailty.

The study, conducted by researchers at the Monash Aging Research Centre at Monash University
in Melbourne, assessed the oral
health, nutrition and frailty of 168

hospitalised geriatric patients over
six months using previously validated tools.

create a series of challenges for how
we care for the population’s oral
health,” he said.

The results show that elderly
people who suffer from frailty are
substantially more prone to issues
with their oral health. Frailty is
linked to a reduced ability to bite
and chew food, as well as sensitivity to hot and cold food and drink.
The study also revealed that frail
adults are more likely to feel self-conscious about their teeth, gingivae
or dentures and are less likely to
access dental care.

“The first problems to occur
are often because of a loss of dexterity. Limited mobility, no matter how small, can have an extremely large effect on our ability
to care for our own health. In terms
of oral health, this means effective toothbrushing becomes much
harder. Balanced nutrition also
becomes more difficult,” he continued.

Previously, experts have identified a relationship between frailty
and difficulties with speech and
with taking medication for oral
pain.
Dr Nigel Carter, OBE, Chief Executive of the Oral Health Foundation, a UK-based charity, stated in
a press release regarding the study
that the oral health of older people
remains an ongoing issue.

New research shows that elderly people who suffer from frailty are substantially more prone to issues with their oral health.
(Photograph: Lisa S./Shutterstock)

“In the UK, people are living
longer than ever before. This will
increase the amount of poor health,
frailty and disability. In turn, it will

Carter called on the UK government to provide greater access
to dental services for frail adults
in hospitals, as well as for those
in nursing homes, and to provide
better oral health training for carers. “The government must find
such proactive solutions if they
are to address the health needs of
an ageing population,” Car ter
stated.
The study, titled “Frailty, oral
health and nutrition in geriatrics
inpatients: A cross‐sectional study”,
was published online in Gerodontology on 12 March 2019 ahead of
inclusion in an issue.


[9] =>
09

WORLD NEWS

Dental Tribune Asia Pacific Edition | 02/2019

Survey shows fear of being sued often leads
to stress and anxiety for dentists
By DTUK
LONDON, UK: Often, dentistry-related stress is only looked at through
the lens of the patients’ experience
and their fear of dental procedures.
A recent survey, however, has found
that there is an entirely different
source of stress and anxiety for
dental professionals in the UK: the
fear of being sued, receiving a claim
or complaint, or being the subject
of an investigation by the General
Dental Council.
The survey was conducted by
Dental Protection, part of the notfor-profit Medical Protection Society for doctors, dentists and healthcare professionals. It asked more
than 1,100 UK-based dentists for
feedback regarding the sources of
their work-related stress, and
77 per cent responded that the fear
of being sued by an unsatisfied patient had caused them to become
stressed and anxious.

A recent survey of more than 1,100
UK-based dentists found that the
fear of being sued by an unsatisfied
patient is a primary source of workrelated stress. (Photograph: VHstudio/Shutterstock)

The results of the survey come
just months after the findings of
an analysis published in the British
Dental Journal showed that general
dental practitioners exhibit the
highest levels of stress and burnout among UK dentists. The findings of this research suggested that,
while practice ownership could
possibly reduce burn-out due to
regulatory stress, it does not positively influence patient-led stress
for dentists.
Remarking upon the findings
of the survey, Dr Raj Rattan, MBE,
Dental Director at Dental Protection, said: “Stress can impact on a
dentist’s health and practice in a
number of ways. It can affect confidence, clinical judgement, morale
and even lead to performance issues. Research confirms that high
stress levels affect performance
and increase the potential for adverse outcomes of error. These may

in turn spark patient complaints
and claims and a self-perpetuating
vicious circle is established.”

“Modern life is full of challenges,
stressors and pressures—and the
dental profession is no exception.

Dental Protection would like to encourage dentists to seek help and
advice to manage the condition be-

fore it causes irreversible changes
to health and well-being,” he concluded.
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[10] =>
10

WORLD NEWS

Dental Tribune Asia Pacific Edition | 02/2019

Case report presents rare incidence of
retained tooth in nasal cavity
By DTI
AARHUS, Denmark: Besides everyday
diagnoses, there are some real rarities to be found in the world of medAD

icine. This was true for a patient at
the Department of Otorhinolaryngology, Head and Neck Surgery of

the Aarhus University Hospital. After
two years of a stuffy and runny nostril and the loss of his ability to smell,

doctors discovered that a retained
tooth growing in his nasal cavity
was the reason for his symptoms.

A CT scan of the 59-year-old patient revealed a mucus-covered mass
on the floor of his nasal cavity. As a
result, the doctors suspected that
the patient had either a dermoid
cyst—a growth that some people
are born with that contains structures such as hair, teeth, fluid or skin
glands—or an impacted tooth.
The medical team decided to use
an endoscope to perform a surgical
extraction. The examination of the
extracted mass revealed the retained
tooth, which was covered with inflamed nasal tissue.
Usually, a condition like this is
caused by trauma, infections from
a cyst, or developmental disturbances
such as cleft lip or cleft palate, but
the doctors had no obvious explanation for this particular case, as
stated in their report.
“Our patient most likely had the
intranasal retained tooth most of
his life, but had late onset of symptoms,” stated co-author Dr Milos
Fuglsang, who had carried out the
tooth extraction.
According to the BMJ, only 23
patients have been identified as experiencing similar incidents over a
period from 1959 to 2008. It is most
common in males and more common among adults than children.
For Fuglsang, this was the first case
of its kind in his medical career.
The case report, titled “Retained
tooth in the nasal cavity: A rare cause
of nasal congestion”, was published
on 21 February 2019 in BMJ Case
Reports.

The retained tooth shortly after it
was removed from the patient’s nose.
(Photograph: 2019 BMJ Case Reports)


[11] =>
Dental Tribune Asia Pacific Edition | 02/2019

11

INTERVIEW

Interview: “Parents tell us that
their children are now brushing
correctly and independently”
By Kasper Mussche, DTI
Most children do not particularly
love toothbrushing, and many parents will agree that getting their
children to brush can be quite a hassle. As a solution, South-Korean
Samsung spin-off Kitten Planet has
launched Brush Monster, a fun and
interactive mobile app game that
teaches children healthy brushing
habits and enables parents to analyse the brushing data afterwards.
Via augmented reality and an innovative smart brush, the app walks
kids through the brushing process
from start to finish in real time, while
turning good oral hygiene into an
engaging game. Prevention spoke
to Dr Jongho Choi, Brush Monster
cofounder and CEO of Kitten Planet.

Tube, and teachers and parents often
spend many hours explaining to
children how to brush well. But
these methods are all indirect—
learning and doing are separated.
Because children easily forget what
they have learnt and still end up
brushing the wrong way, these
methods often fail.
With Brush Monster, we put the
focus on learning by doing. Through
augmented reality, the screen of
the smartphone or tablet acts like
a magical, interactive bathroom
mirror: children can see their own
faces, and the animations show
them where and how to brush. This
corresponds to the views held in
paediatric dentistry, namely that
children should watch themselves
in the mirror while brushing and
get feedback at the same time. However, bathroom mirrors are often
too high for small children, and the
instructions are not always correct.
This is where Brush Monster comes
in.

Dr Choi, where did the idea for Brush
Monster come from?
The other co-founders and I are
all fathers of young children, and
we all at one point or another experienced for ourselves that it can be
quite difficult to get kids to brush
their teeth, let alone to do so properly! Also, sometimes kids say they
have brushed their teeth well, but
it is difficult for parents to know if
this is true.

How can parents be sure that their
children have brushed well?
Among the main problems when
leaving toothbrushing up to young
children are that they rarely brush
for longer than one minute straight
and often brush less than twice per
day. Many children also only brush
the buccal surfaces of the teeth. The
built-in sensor in our smart toothbrush divides the mouth into 16
regions, and through 3-D motion
analysis, the smart brush tracks
and analyses how well each of these
16 regions was brushed, and parents
get a full dental report after brushing.

All of the Kitten Planet co-founders are engineers in the healthcare
industry, and we’re all big on prevention, so we tried to find a fun,
new solution for these problems,
something that children can put
into practice and that is very present in their everyday lives. Brush
Monster not only introduces a great
toothbrush and a fun game that
teaches kids healthy brushing habits and allows parents to analyse
the process, but also helps children
learn to be confident doing something independently at an extremely
important stage in their development. Lastly, Brush Monster is a
solution for the typical struggle
many parents have in getting their
children to brush their teeth and
makes bedtime more relaxed.
What is the in-game story around
Brush Monster? How does the game
work?
Well, first of all, Brush Monster
is supported by almost all phones
and tablets and is currently available in 137 countries. People can
easily download the app from Google Play and the App Store, and then
kids can get started with brushing
right away.
The app has a classic villain versus superhero storyline. The game
starts with the evil character—Green
Mold— capturing the friendly Brush
Monsters. By following detailed
instructions on where, when and
how to brush their teeth, kids can
save the Brush Monsters and collect
items and stickers. Sparkles and
crazy goggles appear on the children’s faces while brushing, and
the monsters change regularly to

With Brush Monster, Dr Jongho Choi and the other Kitten Planet cofounders have
launched an interactive mobile app game that teaches children healthy brushing
habits. (Photograph: Kitten Planet)

keep things interesting. At the end
of a successful brushing session,
children are rewarded with a star
and given the opportunity to take
a selfie.

routine and technique are instilled
in children when they are still young.
As such, Brush Monster is aimed at
children aged 3–10 and their parents.

What age group can benefit from
the app?
There are many children who
hate brushing their teeth or who
are not very good at it. According
to a study we did, the spatial recognition and motor skills required for
good brushing are not fully developed in children younger than 10.
Still, brushing is a necessary routine
for healthy teeth and a healthy life
in general, and the best-case scenario is when a good oral hygiene

What difference does the app offer
compared with other teaching methods out there?
Brush Monster teaches children
directly. There is so much educational content aimed at kids already,
such as posters at the basins of kindergartens and elementary schools
that show children how to brush
their teeth in different steps. Children can watch an unlimited number of instructional videos with
their favourite characters on You-

Brush Monster uses a sonic brush
with soft bristles.
Yes. The gingivae of small children are relatively soft and weaker
than those of adults, so we opted
for sonic brushes, as they are effective and gentle. Our smart brush
head is designed to guarantee the
most effective plaque removal,
while five levels of sonic vibration
ensure the most effective plaque
removal and massage the gingivae.
How has the response been so far?
We launched the app in January
2018, and it is now the most popular of about 200 brushing apps.
Brush Monster currently has a rating of 4.8 and has received so many
great responses and user requests
for new functions. We are also very
happy to see that many parents are
now recommending the app to other
parents. One Korean online marketing platform even voted the
Brush Monster toothbrush the
number one electric toothbrush for
kids. Most importantly though,
parents tell us that their children
are now brushing correctly and
independently, and actually brush
correctly for three minutes.

IMPRINT
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www.dental-tribune.com
©2019, Dental Tribune International GmbH.

All rights reserved. Dental Tribune International
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product claims, or for typographical errors. The
publishers also do not assume responsibility
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