Dental Tribune India Issue

4Page 9 DENTALTRIBUNE The World’s Dental Newspaper  India Edition PUBLISHED IN INDIA www.dental-tribune.com VOL. 2 NO. 3 DTI expands European portfolio The Dental Tribune Interna- tionalMediaGroup hasentered into a new partnership with In- ternational Faculty for Execu- tives, a Portuguese subsidiary of the French multinational Edition Formation Enterprise (EFE). The agreement aims to extend DTI’s media and online education portfolio to Portugal, a market with more than 5,500 dentists currently. The launch ofthenewPortugueseeditionof Dental Tribune is scheduled for the 19th Annual Meeting of the Portuguese Dental Association, to be held in Porto from 11 to 13 November 2010. EFEprovides information for 25,000 execu- tives, companies, and local au- thorities in the agriculture sec- tor, and logistics and dentistry industries. DTI’s combined portfolio includes more than 100 publications that reach over 650,000 dentists in more than 90 countries and 25 lan- guages. Dental pulp cell may be an easy source of pluripotent cells K.Tezuka from the Gifu Univer- sity Japan, published a study in the Journal of Dental Research, which suggests that pulp tissue from extracted teeth may be an easy source of induced pluripo- tent cells (iPS). The potential iPS can not be harvested easily in the human body with a minimally invasive procedure. Tezuka et al. evaluated the pos- sibility to culture stem cells from dental pulp. They demon- strated that DPC has the prom- ising potential of harvesting iPS. Further, test revealed that stem cells, harvested from DPC of extracted teeth of Japanese population, were genetically compatible with 20 percent of the population. News in brief 4Page 24 Trends & Applications Miniscrews-a focal point in practice Clinical Crown or same- day onlay? 4Page 23 Interview “Public dental services in South Africa have fallen by the wayside” NYU College of Dentistry NEW YORK, NY, USA: Researc- hers in the Department of Bio- materials and Biomimetics at New York University College of Dentistry recently determined through mechanical mouth- motion simulator testing that IPS e.max CAD lithium disilicate ceramic is the most robust all- ceramic material tested to date. The study results were presented by P.C. Guess, R. Zavanelli, N. Silva, and V.P. Thompson. The researchers used the mouth-motion-simulator test to compare the durability of IPS e.max CAD lithium disilicate full-coverage crowns to venee- red zirconia crowns. By repli- cating actual forces exerted in the human mouth, this test provided a more realistic assess- ment of how ceramic mate- rials hold up to the forces of chewing. In particular, unlike previous laboratory tests that only assess a material’s physical properties to meet minimal standards, the mechanical mouth simulator stressed the restorations using clinically relevant directed loads over thousands of cycles (simi- lar to how people chew) until failure occurred. Failure was considered to be chip-off fractures of the venee- ring ceramic in the case of the zirconia crowns or fracture/chip through the lithium disilicate crowns. The research found that none of the IPS e.max CAD lithium disilicate crowns failed below 1,000 N and 1 million cycles. In comparison, the veneered zirconia crowns tested demon- strated limited reliability, with approximately 50 percent of the crowns tested failing from veneer chip-off fractures by 100 K cycles at 200 N, which is similar to previous research findings. Also, 90 percent of the veneered zirconia crowns tested failed by 100 K cycles at 350 N. Overall, in comparison to the veneered zirconia systems that were tested, the IPS e.max CAD lithium disilicate full-coverage crowns can be expected to demonstrate excellent clinical performance relative to chip- ping or fracture based on the findings of the NYU College of Dentistry mouth motion simu- lator testing. The failures repor- ted in this study mimic those reported in clinical studies, suggesting that IPS e.max lith- ium disilicate is the most robust all-ceramicsystemtestedtodate. (Edited by Fred Michmer- shuizen, DTA). DT Study: IPS e.max lithium disilicate material the most durable ceramic tested to date Union health ministry look into dental council decision Isha Goel DT India The Union health ministry has set up a four-member technical committee — director general of health services Dr R K Sri- vastava, Dr Naseem Shah, Dr O P Kharbanda from the depart- ment of dentistry at AIIMS, and Dr Ashok Autreja from PGI Chandigarh — to investigate the decision taken by Dental Coun- cil of India (DCI), to decline the permission given to around 45 new dental colleges on ground of not having necessary faculty to run a dental college and enough clinical material to teach student, according to a report published in newspaper the Times of India. Besides, DCI has not renewed the registration of nearly 42 existing dental colleges as well. Presently, the country has near about 290 dental colleges, pro- ducing roughly 15,000-20,000 dentists each year. According to the Council's senior mem- bers, dental education has be- come a productive business that is diluting quality dental schooling in India. The DCI chief Dr Anil Kohli told in an interview to TOI, “India does not require new dental colleges”. “There is hardly any employment opportunity for dentists in India. We must not open new dental colleges any- more but accredite the old ones under three categories — doing well, can improve, and bad. Colleges coming under the last category should be shut down.” The DCI has now made it obli- gatory for professors teaching at the UG level to stay in the same college for at least one year, while those teaching in the PG level must do so for three years. It has also made continuing medical education mandatory for 20 hours a year and 100 hours for 5 years. DT