Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Visiting dental researcher at Case invents new technology

21.07.2004


To aid orthodontists in use of new orthoscrew



The newly Food and Drug Administration-approved orthoscrew--so tiny it is dwarfed by a fingertip--is difficult to place between the narrow spaces of teeth roots and bone.
Young Jin Jeon, a visiting assistant professor at the Case Western Reserve University School of Dental Medicine and an orthodontist from Pusan National University in Korea, developed a new grid device during his yearlong residency at Case that will help orthodontists accurately place and guide the newly approved mini-orthoscrews without damaging the teeth.

Called the JJ Aligner, which looks like a tiny half-inch plastic square of graph paper, is attached by the orthodontist to patient’s jaw and then x-rayed to show where teeth roots and bone are in relations to the grid. After the patient’s gum tissue has been numbed (much like that for a dental filling), the orthodontist will implant the screw using the combination of the x-ray and the grid as a guide. Jeon has a patent pending in Korea on the device. When he returns to Korea at the end of June, he plans to form a company to manufacture the grids for the eventual use in Korea and the United States.



Mark Hans, chair of Case’s department of orthodontics at the dental school, praised the new grid device, saying that the device will allow orthodontists, who are interested in using the orthoscrews to accurately place them between the teeth without damaging the roots of the teeth.

Reducing placement errors which might damage teeth and bones motivated Jeon to design the grid. "Without experience, it is difficult to learn where to put the screws by just looking at an x-ray and the patient’s gums," said Jeon.

Since 1996, Korea has led the development of medical screws in dentistry. The screws are a variation of the surgical steel pins used to piece broken bones together and have a head much like the screws used to anchor wood to a wall.

These screws have been used in Korea for some of the most complex orthodontic cases and can hold wires where teeth may be missing or where the movement of teeth can only take place by using head gear (appliance that has to worn at night that uses the head or back of the neck to assist the orthodontist in moving the teeth).

In the United States, oral surgeons have used a type of dental screw as a post for teeth implants, but those screws permanently remain in place as bone grows around the screw over a six-month period as the anchor to hold the implanted tooth. The mini-screws for orthodontics are designed to be removable and taken out after the teeth have been moved their way into the correct position.

The Case dental school’s orthodontic clinic is among the first in the country to use the new screw technology, said Hans. It currently is being used on one patient.

Hans said he believes the technology will become popular and, in some difficult orthodontic cases, might even eliminate the need for upper jaw surgery.

"The orthoscrews are not used for routine orthodontic cases," added Hans, but only in very complicated ones such as cleft palates or other jaw deformities that require unusual tooth movement and where the screws can replace the head as the anchor. Jeon, who has used the technology for a number of years on his patients in Korea, has seen a reduction in the number of jaw surgeries where the screws can anchor wires in ways that can push or pull teeth in unusual directions.

Susan Griffith | EurekAlert!
Further information:
http://www.case.edu

More articles from Health and Medicine:

nachricht A 'half-hearted' solution to one-sided heart failure
24.11.2017 | Boston Children's Hospital

nachricht New study points the way to therapy for rare cancer that targets the young
22.11.2017 | Rockefeller University

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New proton record: Researchers measure magnetic moment with greatest possible precision

High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons

The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

IceCube experiment finds Earth can block high-energy particles from nuclear reactions

24.11.2017 | Physics and Astronomy

A 'half-hearted' solution to one-sided heart failure

24.11.2017 | Health and Medicine

Heidelberg Researchers Study Unique Underwater Stalactites

24.11.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>