by DT SEA

In the month of September, 2018 at the global meet of world’s leading organisation Fédération Dentaire Internationale (FDI) in Buenos Aires, Argentina, Prof. Mahesh Verma, Director and Principal, Maulana Azad Institute of Dental Sciences, New Delhi, India, was elected to the prestigious science committee of the FDI. His candidature was nominated by Indian Dental Association (IDA) and he is the first Indian ever to get this opportunity.

The illustrious Science Committee of the FDI has the responsibility to monitor and advice in issues related to oral health by streamlining the Scientific actions in the field of dentistry, across the globe. The vivid representation of nine comrades in the committee is inclusive of the members of World Health Organisation (WHO), International Association of Dental Research (IADR) and the

International Organisation of Standardization (ISO).

Prof. Verma, in his association with the committee will be sharing

the onus to champion the cause of advancement of dentistry by his

contributions in the committee. The tasks will be inclusive of multitude assignments including the translation of scientific information to the dental profession, developing papers and policy statements, identifying the areas of international concern in the science of dentistry, evaluation of new projects and operations of ongoing projects in the Committee, and identifying co-operation with the associate national and international agencies relative to the current and future projects.

Through his induction, the FDI empowers Prof. Verma in his endeavours to competently contribute to the growth of Science for the goodwill of the communities across the globe.

Source – FDI

DENTAL TRIBUNE The World’s Dental Newspaper · South Asia Edition

Published in India www.dental-tribune.in 2/19

Reaches another milestone, celebrates 60 years

GDCRI

To higher levels of toxic chemicals in body

Study links dental flos-sing

” Page 02

Contest of Dental photography school’s 2019 calendar

French dentist wins

” Page 03 ” Page 05

Prof. Mahesh Verma elected to the prestigious FDI World Dental Congress Science committee

Celebrates 100 years of publishing

Journal of Dental Research

” Page 04

Prof. Mahesh Verma at the FDI World Dental Congress, Buenos Aires, Argentina in September 2018

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2 News 2/19

by DT SEA

Bangalore: The Government Dental College and Research Institute (GDCRI) celebrated 60 years of dental education on 28th of December 2018. the grand event was attended by the Hon‘ble Chief Mininster of Karnataka S h r i . H . D. K u m a r a s w a m y, Hon‘ble Minister for water resources and medical education, Shri.D.K.Shivakumar

GDC, a premier institute in the entire country has been catering to oral health needs as well as dental education for the past sixty years. This period has witnessed tremendous growth in dentistry and GDCRI has its share in providing dental educators and providers as torchbearers of dentistry. The Golden Jubilee was celebrated in 2008.

The Diamond Jubilee celebration was held on 28th December 2018 at the Dr S Ramachandra auditorium, GDCRI Bengaluru. Over 600 alumni attended this program. Four distinguished speakers shared their knowledge about various aspects of Dentistry.

The event was inaugurated by Dr S Sacchidanand, Hon’ble Vice Chancellor, RGUHS, Karnataka. Dr Sahana Srinath

Chairperson and members of souvenir committee created the souvenir which was released during the occasion.

As a part of the Diamond Jubilee celebrations, GDCRI Benevolent Foundation was envisaged as a ongoing activity to support economically deserving students, patients and faculty research. Dr C V Mohan Chairman and members of this foundation are working in this direction to realize this goal.

Dr A R Pradeep, Chairperson Scientific Committee and the members organised Diamond Jubilee lecture series involving experts from wide areas. Dr

Srinath S K, Chairperson Sports Committee and the members organised Vajrasiri Nirvan 2018-a state level inter dental college indoor sports meet that saw some of the best sportspersons showcasing their talent.

Dr Padmini M N, Chairperson Cultural Committee and the members organised Kalahshaja-a state level inter dental college cultural fest that showcased rich talent.

Source: Dr.Manjunath Pranik, GDCRI

Release of GDCRI Diamond Jubilee celebrations souvenir by Dr S Sacchidanand, Hon’ble Vice Chancellor,RGUHS. (Pic GDCRI)

Dignitaries on the dais: L to R: Dr Manjunath P Puranik, Organising Secretary, Dr M A Shekar,Organising Chairman, Dean Cum Director

GDCRI Bangalore, Dr S Sacchidanand, Hon’ble Vice Chancellor,RGUHS, Dr S S Hiremath, President, GDC Alumni Association and Dr Soorya

Poduval, Hon. Secretary, GDC Alumni Association

Release of GDCRI Diamond Jubilee Celebrations Souvenir by Dr S Sacchidanand, Hon’ble Vice Chancellor, RGUHS

Launching GDCRI Benevolent Foundation by Dr S S Hiremath, President, GDC Alumni Association along with Dr C V Mohan,

Chairman, GDCRI Benevolent Foundation

Inauguration of GDCRI Diamond Jubilee Celebrations by Dr S Sacchidanand, Hon’ble Vice Chancellor, RGUHS

Felicitation to Dr S Sacchidanand, Hon’ble Vice Chancellor,RGUHS by Organising Committee of GDCRI Diamond Jubilee Celebrations

GDCRI reaches another milestone, celebrates 60 years in existence

3 News 2/19

by DT SEA

Dental photography school released the 3rd edition of its calendar in January this year. The idea of world dental photography calendar is to encourage all dentists to undertake better documentation. For 2019 calendar, the event received entries from over 18 countries.

Each year in November, dental photography school declares contest which is open exclusively for dental professionals around the world. Each dental

professional is allowed to send in two photographs of their work. The 13 most impressive images are selected and published as a calendar.

“This year we saw a signifi cant rise in participation as compared to the previous two years which means the concept has received a positive response and we have defi nitely caused a greater awareness among clinicians across the globe”, said Dr. Mayur Davda, Founder of Dental photography school (DPS).

Dr.Davda believes that our world is inside a three fi nger width space, so we make it look as beautiful as we can, both clinically and in photography. True to that sense DPS has in addition to photography, encouraged and published other forms of art like painting, doodling and writing . The envelop,which is one of its kind, has a doodle by Dr. Amruta Sardeshmukh from Sangli, Maharashtra.The cover shot of the calendar has a hyper realistic painting by Dr. Tatyana Rozhdestvenskaya from Russia and the calendar gully (stand) has quotes by Dr. Joohi Sharma, Punjab.

Nearly Rs.1,50,00 worth of prizes were given by DPS to the winners .The fi rst prize was won by Dr. Frederique Ferrand from France.“he calendar is a beautiful concept by Dr. Davda and it has pushed all the dentists to document better. Dentists are artists and the calendar provides for a perfect platform to showcase our art. I hope one day photography is taught in all dental colleges across the globe because it is so important to see our work up close. And macro photography really helps

us improve our work.” said Dr. Frederique Ferrand.

” I am grateful to our sponsors GC India, Edge endo and Green Park Dental who understood the value of this event and supported us with fi nancing the project” said Dr.Davda.

Dental Photography is a combination of formal portraiture and macro photography. As of today photography has more than 50 applications in dentistry alone. Dental photography is mostly done using a DSLR, a 100 mm macro lens and various fl ash systems. It also uses advanced lighting techniques like polarization, IR and UV (in forensic odontology). Interestingly 90 per cent of dental photography is done using a mirror and hence considered as one of the most diffi cult forms of photography.

Source : Dental photography school.

French dentist wins contest of Dental photography school’s 2019 calendar

Dental photgraphy school releases 2019 calendar which features winner of the contest announced in November 2018. French dentist Dr.

Frederique Ferrand won the first prize in the contest.

Dr.Fredrique Ferrand from France won the DPS 2019

calendar contest.

Dr.Mayur Davda, Canon mentor and founder of Dental

Photography School, Mumbai.

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4 News 2/19

by Dental Tribune International

ALEXANDRIA, Va., U.S.: Respected journals in dentistry are influential regarding the dissemination of new findings and groundbreaking research. This

year, the Journal of Dental Research (JDR), is celebrating its publishing centenary. To mark this milestone, the journal will feature a yearlong commemorative article series and a podcast series highlighting topics that have transformed dental, oral

and craniofacial research over the past 100 years.

Contributing to the commemorative series, JDR Editor-in-Chief Prof. William V. Giannobile, JDR Clinical & Translational Research Editor-in-Chief Prof.

Jocelyne Feine, and former JDR Editors Profs. Mark C. Herzberg, Colin Dawes and Anthony J. Smith will collaboratively work on the opening series, titled “The Journal of Dental Research: A century of shaping dentistry.”

Speaking about the upcoming series, Giannobile said, “I am honored to contribute to the commemoration of this milestone and to be a part of the rich history of the JDR that has helped shape the course of dental research and the profession of dentistry. Through the ‘Historical Highlights’ series, we hope that you enjoy ‘stepping back in time’ as well as looking forward to the next 100 years of JDR.”

Along with the editorial contributions, a series of podcasts will also be released. The first, titled “Launch of the Journal of Dental Research centennial celebration year” will feature a conversation between Giannobile, International Association for Dental Research (IADR) President Prof. Rena D’Souza and American Association for Dental Research (AADR) President Dr. Maria Emanuel Ryan, and will

be moderated by IADR/AADR CEO Dr. Christopher H. Fox.

Additionally, the JDR will be honored at the 97th General Session and Exhibition of the IADR, which will be held in conjunction with the 48th Annual Meeting of the AADR and the 43rd Annual Meeting of the Canadian Association for Dental Research in Vancouver, British Columbia, from June 19 to 22, 2019.

More information on the JDR centennial can be found at www.iadr.org/jdrcentennial.

by Dental Tribune International

BRISBANE, Australia: A recent study has suggested that concentrated extracts of polyphenol-rich fruits such as cranberries and blueberries could prove beneficial for combating certain bacteria in dental biofilm. The findings of the research, conducted at the University of Queensland in Brisbane and the University of Bristol in the UK, indicate the potential for cranberry phenols to modulate the pathogenicity of dental plaque.

The objective of the study was to continue testing natural components from fruit as bacteria inhibitors, and to further the research of their effects on oral health.

The researchers tested high-quality extracts, prepared as bioactive molecules from cranberries, blueberries and strawberries, as well as a combination of the three berry extracts called Orophenol, on 24-hour-old Streptococcus mutans

biofilms and compared them to the effects of a vehicle control.

The study found that higher concentrations of cranberry extract significantly reduced the

bacteria’s metabolic activity and acid production and bacterial/exopolysaccharide biovolumes, as well as resulted in a less compact architectural structure than that

of the control-treated biofilms. Orophenol also had a significant impact, but slightly lower than that of cranberries. Only the highest concentration level of blueberry

extract significantly reduced metabolic activity and acidogenicity, but did not significantly affect the biovolume or biofilm architecture. The extract from strawberries had no significant impact on any bacterial activity. No extract killed the bacteria.

Continued research goes into fruit extracts for oral health care and bacteria management.

The study, titled “Inhibitory effects of fruit berry extracts on Streptococcus mutans biofilms”, was published online in the European Journal of Oral Sciences on 28 December 2018 ahead of inclusion in an issue.

Journal of Dental Research celebrates 100 years of publishing

Study indicates potential of berry extract to fight off dental bacteria

In celebration of its publishing centenary, the Journal of Dental Research will be releasing a series of articles and podcasts looking back at topics that have transformed dental, oral and craniofacial research.

(Photograph: Cozine/Shutterstock)

Phytonutrient-rich cranberries and blueberries may help inhibit biofilm according to a new study. (Photograph: NataliTerr/Shutterstock)

5 News 2/19

by Dental Tribune International

NEWTON, Mass., U.S.: Per- and polyfl uoroalkyl substances (PFASs) are an important group of chemicals with wide applications, including dental fl oss, because of their ability to resist both water and lipids. A recent study, conducted by the Silent Spring Institute, has found that fl ossing with a certain brand contributes to elevated levels of toxic PFAS chemicals, which have been linked to various health problems, in the body.

The researchers measured 11 PFAS chemicals in blood samples taken from 178 middle-aged women enrolled in the Public Health Institute’s Child Health and Development Studies, a multigenerational study of the impact of environmental chemicals and other factors on disease. To understand how the participants’ behavior infl uenced

their exposure to PFAS, the researchers then compared the blood measurements with results from interviews in which they asked the women about nine behaviors that could lead to higher exposures.

The study found that women who fl ossed with a major brand tended to have higher levels of a type of PFAS called perfl uorohexanesulfonic acid in their body compared with those who did not. To further understand the connection, the researchers tested 18 dental fl osses for the presence of fl uorine, which is a marker of PFAS. All three products of the major brand tested positive for fl uorine. In addition, one store brand fl oss describing itself as a “single-strand Tefl on fi ber” tested positive for fl uorine.

The reason scientists are concerned about widespread exposure to PFAS in the population is that the chemicals have been linked to negative health effects, including kidney and testicular cancer, thyroid disease, high cholesterol, low birth weight, decreased fertility and effects on the immune system.

“This is the fi rst study to show that using dental fl oss containing PFAS is associated with a higher body burden of these toxic chemicals,” said lead author Katie Boronow, a staff scientist at the institute. “The good news is,

based on our fi ndings, consumers can choose fl osses that don’t contain PFAS.”

The study, titled “Serum concentrations of PFASs and exposure-related behaviors in African American and non-Hispanic white women,” was published online in the Journal of Exposure Science and Environmental Epidemiology on Jan. 8, 2019.

Researchers have found that certain dental floss brands expose users to toxic chemicals. (Photograph: LightField Studios/

Shutterstock)

Study links dental fl ossing to higher levels of toxic chemicals in body

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6 News 2/19

by Straumann

BASEL, Switzerland: Straumann recently announced that the company has settled

its long-running patent dispute against Nobel Biocare in the US.

The dispute began in 2014 and involved an early version of the Neodent Drive CM implant, which

was superseded soon afterwards. Nobel Biocare claimed that the version in question infringed two of its patents, but Straumann successfully challenged one of them

at the US Patent Trial and Appeal Board. The ruling, which invalidated a patent on a key feature of the NobelActive implant, was recently upheld—despite Nobel Biocare’s subsequent appeal to the US Court of Appeals for the Federal Circuit. Nobel Biocare has now agreed to take no further action regarding the decision and to dismiss its pending court action.

“We are delighted with this outcome” said Dr Andreas Meier, General Counsel of Straumann. “Neodent’s new GM implant range is unchallenged and we are not required to pay any compensation.”

by Dental Tribune International

JENA, Germany: In an exciting discovery that may help to change the way we look at medieval history, researchers have found traces of lapis lazuli stone in the dental calculus of a woman buried at a ninth- to fourteenth-century church–monastery complex in Germany. This evidence suggests that she was an accomplished painter of illuminated manuscripts, challenging previous beliefs regarding the role of women during this time.

In medieval Europe, lapis lazuli was as rare and expensive as gold. The discovery of traces of the blue pigment preserved in the dental plaque was made by researchers from the Max Planck Institute for the Science of Human History in Jena and the University of York in the UK and adds to a growing body of evidence that nuns in medieval Europe were not only literate, but also involved in the production of books.

To identify the blue colouring trapped in the woman’s plaque, scientists used a range of light and electron microscopy techniques, as well as spectroscopy, including a technique called Raman spectroscopy, which offers a non-

destructive means of characterising mineral pigments and other materials with high precision using the scattering of laser light. “It came as a complete surprise—as the calculus dissolved, it released hundreds of tiny blue particles,” said co-fi rst author Dr Anita Radini, Wellcome Trust Research Fellow in Medical Humanities at the University of York.

“Here we have direct evidence of a woman, not just painting,

but painting with a very rare and expensive pigment, and at a very out-of-the-way place,” explained senior author on the paper Prof. Christina Warinner from the Max Planck Institute. “This woman’s story could have remained hidden forever without the use of these techniques. It makes me wonder how many other artists we might fi nd in medieval cemeteries—if we only look.”

The study, titled “Medieval women’s early involvement in manuscript production suggested by lapis lazuli identifi cation in dental calculus”, was published on 9 January 2019 in Science Advances.

Straumann and Nobel Biocare settle patent dispute

The lower jaw with entrapped lapis lazuli pigment

Straumann recently announced that it has won a patent lawsuit filed by Nobel Biocare against the company. (Photograph: designer491/Shutterstock)

The lower jaw with entrapped lapis lazuli pigment was discovered in Dalheim in Germany. (Photograph: Christina Warinner)

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DENTAL TRIBUNEThe World’s Dental Newspaper · United Kingdom Edition

7 Clinical 2/19

by Dr. Priya Titus Singh

Composite resin is a material that is able to mimic natural tooth structure, its optical properties and aesthetics. Often due to trauma or caries, the anterior teeth get harmed, thus damaging a patient’s smile. In a price sensitive economy, it is often due to budget constraints that a patient would choose direct restorations in the anterior teeth rather than going for the more aesthetic, more hassle-free indirect restorations. In such situations, it is up to the composite resin layering abilities of the operating dentist, to restore not only the teeth, but also the smile and self confidence of the patient.

In the natural tooth, we have layers of dentin and enamel, each of which have variations in chromaticity and translucency. For example the dentin that is closest to the pulp and that is near to the dentino enamel junction (DEJ) has different chromas. Similarly the enamel near the DEJ is darker compared to the outermost layer of enamel.

The tooth is darkest at its core and starts becoming lighter as we move outwards towards enamel. Considering this natural tooth as a histological guide, we can replace lost dentin structure

using opaque dentin shades [with different range of chromaticity] of composite resin.

Similarly we can replace lost enamel structure using the more translucent chromatic and achromatic enamel shades. Material manufacturers also make materials with a wide range of hue, value and chroma as well as opacity and translucency. Because of the difference in the refractive indices of the composite material as compared to that of natural dentin and enamel, we have to layer the composite shades in a definite and controlled thickness in order to get the optimum results.

In the following case, two mal-aligned, fractured, non-vital central incisors were treated endodontically, bleached and restored using direct composite restorations.

Case history22 yr old Male walked into our

dental office saying that he had a fall many years ago and his front teeth were broken. There was no associated pain or symptoms and the problem was purely aesthetic. He was only seeking treatment because he needed to get married soon. He was low on confidence while smiling and required a solution within 4 weeks.

On examinationThe two maxillary central

incisors were fractured and non-vital with noticeable darkening of shade [ Fig 1,2 ]. They were mal-aligned buccolingually and there was a midline diastema as well . There was no tenderness on percussion. There were peri-apical lesions associated with both incisors in the radiograph.

TreatmentNon-surgical endodontic

treatment was done in the 1st week. After the symptoms resolved completely we were ready to restore form, function and aesthetics. Non-vital in-office bleaching was done. Pola office bleach was used for the same, 3 cycles of 8 minutes each. It appeared that the shade had corrected completely after bleaching but we waited for it to stabilize.

Two weeks later, the shade [ Fig 3 ] stabilized and the teeth were ready for bonding. We observed that the central incisors were still darker than the neighbouring teeth. Direct composite veneers were planned with the help of a lab made wax up [ Fig 4 ] and a putty index. Bevels were placed and most of the preparation was in enamel. After the total etch protocol, 5th generation bonding agent was used. 3M Z350XT shades were used for the build

up. A2 Enamel shade was used for the palatal shell [ Fig 6 ] and the proximal walls [ Fig 11 ].

Desaturation was achieved by layering a deeper darker dentin [ A3 Dentin – Fig 12 ] inside and a lighter dentin [ A2 Dentin – Fig 13 ] shade over it in the shape of three mamelons. Incisal Halo was achieved by layering an Achromatic Enamel [clear translucent] shade around the mamelons [ Fig 14 ] and the A2 dentin shade on the incisal edge [ Fig 11 ]. Final layer of A2 Enamel shade was used covering the restoration in 0.5mm thickness so as to avoid too much translucency [ Fig 15 ]. Finishing and polishing were done using the 3M Soflex discs and spirals [ Fig 17 ] as recommended by the manufacturer.

We have previously discussed the finishing and polishing protocols of this case in detail in an earlier article [click here for link]

Post-op instructions included regular follow ups to see if the peri-apical region was healing properly. Patient has been informed that composite resin is unable to bear shearing forces, the restoration may debond. And that he needs to come back for polishing every 6 months for routine maintenance.

DiscussionUnderstanding the patient’s

requirements in aesthetic cases is of utmost importance. Photography and documentation of aesthetic work helps in planning and execution. Having a set protocol with regards to the clinical work flow, makes these cases more predictable. Using a wax up makes it easier to control the palatal anatomy and emergence profile of the restoration. When used meticulously, direct composites can result in extremely aesthetic, life-like restorations.

ConclusionWith proper Layering

Protocols and systematic finishing and polishing, a direct composite buildup can restore a smile as efficiently as an indirect restoration [ Fig 18, 19, 20 ]

References1) Prof Dietschi, Switzerland.

Learning and Applying the Natural Layering Concept, Newsletter: Cosmetic Dentistry : 2_2009

2) Manauta J, Salat A . LAYERS An atlas of composite resin stratification. Quintessence books 2012

3) Manauta J, Salat A, Putignano A, Devoto W, Paolone G, Hardan LS. Stratification in anterior teeth using one dentine shade and a predefined thickness of enamel: a new concept in composite layering–Part II. Odontostomatol

Trop. 2014 Sep;37(147):5-13.4) Manauta J, Salat A,

Putignano A, Devoto W, Paolone G, Hardan LS.

Stratification in anterior teeth using one dentine shade and a predefined thickness of enamel: a new concept in composite layering–Part I. Odontostomatol

Trop. 2014 Jun;37(146):5-16.5) Orban, Balint J., and S.

N. Bhaskar. 1976. Orban’s Oral histology and embryology. Saint Louis: Mosby.

Histologic layering technique adds life to anterior composite restoration. Picture Dr.Priya Titus Singh

Bringing anterior direct composite restorations to life with histologic layering protocols

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Fig-6: Enamel shade for palatal shell on putty index

Fig-11: Dentin shade placed incisally for incisal halo effect

Fig-16: Pre polishing

Fig-7: Enamel shade merged with the teeth

Fig-12: Dark dentin shade layered

Fig-17: Polishing

Fig-8: Palatal shell

Fig-13: Light dentin shade placed above dark dentin

Fig-18: After 48 hours rehydration

Fig-9: Sectional matrix placed vertically

Fig-14: Translucent shade placed in between mamelons

Fig-19: Surface texture

Fig-10: Enamel shade for proximal box layering

Fig-15: Final enamel layer

Fig-20: Final smile

Fig-1: Pre op smile Fig-2: Preop Fig-3: Shade Fig-4: Wax up Fig-5: Isolation

8 Clinical 2/19