Thursday, July 2, 2009

Eye tooth can See, Best retainer, chewing robot

Cuspid implanted in Eye of a Blind Man
Martin Jones' canine was pulled out so a tiny optical lens could be fitted to it.Then, amazingly, the tooth was inserted in his eye socket.

The 42-year-old lost his left eye and was totally blinded in the right 12 years ago when a tub of molten aluminium exploded in his face at the scrapyard where he worked.

He had all but given up hope of ever seeing again until hearing about operations performed by surgeon Christopher Lui and his team in Brighton, East Sussex. Full Story and pic


Do you want to take the risk with Hawley Retainer ?
AJODO Dec 2007

The aim of this study was to compare the clinical effectiveness of Hawley and VFRs (vacuum formed retainers) over a 6-month period of retention. The study design was a randomized clinical trial, performed in a single orthodontic practice.

The results showed significantly greater changes in irregularity of the incisors in the Hawley group than in the VFR group at 6 months. There were otherwise no statistically significant differences. Conclusions: VFRs are more effective than Hawley retainers at holding the correction of the maxillary and mandibular labial segments. The median differences were 0.56 mm in the mandibular arch and 0.25 mm in the maxillary arch. Although this difference is unlikely to be clinically significant in the maxillary arch, it could be considered clinically significant in the mandibular arch if located to a single tooth displacement.

Nanotechnology may enhance the life of dental fillings

"Dentin adhesives bond well initially, but then the hybrid layer between the adhesive and the dentin begins to break down in as little as one year," says Dr. Franklin Tay, associate professor of endodontics in the MCG School of Dentistry. "When that happens, the restoration will eventually fail and come off the tooth."

Half of all tooth-colored restorations, which are made of composite resin, fail within 10 years, and about 60 percent of all operative dentistry involves replacing them, according to research in the Journal of the American Dental Association.

"Our adhesives are not as good as we thought they were, and that causes problems for the bonds," Dr. Tay says.
"Instead of dentists replacing the teeth with failed bonds, we're hoping that using these crystals during the bond-making process will provide the strength to save the bonds," Dr. Tay says. "Our end goal is that this material will repair a cavity on its own so that dentists don't have to fill the tooth." More Here

New Treatment For Receding Gums
Tufts dental researchers conducted a three-year follow-up study that examined the stability of a treatment option for receding gums and found that complete root coverage the goal of the surgery had been maintained. This specific tissue regeneration application, developed at Tufts, reduces the considerable pain and recovery time of gum grafting surgery. The case study of six patients is published in the July 2009 issue of the Journal of Periodontology.

"Patients have a less invasive treatment option for receding gums and we now have evidence to support the stability of this relatively painless procedure. Instead of leaving the dental office with stitches in the roof of their mouth, a patient leaves with a small bandage on the arm that can be removed in an hour," said Terrence Griffin, DMD, associate professor, chair of the department of periodontology, and director of postdoctoral periodontology at Tufts University School of Dental Medicine in Boston. More Here

A Chewing Robot which mimics the human jaw and teeth could revolutionise dental research

The mechanical mandible allows experts to study the wear-and-tear on dental restorations like fillings, crowns and bridges without using costly human subjects.

Dentists use metals, polymers and ceramics - but their dental wear properties are often poorly understood.

Clinical trials examining the toll taken on real human teeth are expensive and time-consuming.
By the time a new material has been tested, it is often obsolete.

This is where the Chewing Robot - created by the University of Bristol and the Department of Oral and Dental Science.
The movements and forces involved in natural chewing action have now been successfully copied using the simulator - the Chewing Robot.

Superior Method For Coating Orthopaedic And Dental Implants Invented

Tel Aviv University researcher Prof. Noam Eliaz of the TAU School of Mechanical Engineering has developed an electrochemical process for coating metal implants which vastly improves their functionality, longevity and integration into the body.

Prof. Eliaz has discovered that his method of coating circumvents the disadvantages of plasma-spraying. The electrochemical process allows synthetic hydroxyapatite to more closely mimic the real material. Examined under a microscope, it is virtually indistinguishable from the body's own material - which helps the body accept a new implant. Full Report

How to be safe on Internet

Internet/computres has vast potential but it has also its own dangers, Dr Ameet has put together a great article for you. This is the best advice from a Dentist to the Dentists and if you follow it I can assure you of great safety and avoid loss of money or data.

Safe cybersecurity practices:
1. Protect your personal information, including credit-card numbers, Social Security number, user names and passwords, and other sensitive data. Do not store any of this information on your computer, and disable the password “remember/auto-complete” function in your Web browser.
2. Know the companies with which you are dealing online. Do not disclose your identity or sensi-
tive information to strangers or to websites that are not verifiably secure.
3. Use a highly rated security suite with an up-to-date database of virus definitions. Using outdated virus definitions will leave you exposed to security threats.
4. Use only the most recent versions of operating system and browser software, which often incorporate security patches.
5. Back up your important files regularly. Offline and online backup tools are readily available.
Read full paper here

Watch Star TV on your computer

Star India Pvt Ltd has launched Star Player, an online television viewing service that offers full length content of Star’s best TV shows and other original content for free, only on www.Startv.in

Star Player showcases premium content from the Star Network of channels on one single platform. You can watch the latest episode of the season’s latest and hottest shows, or entire runs of all time classics. Almost five to six hours of programming are added every day to keep the content fresh and attractive.

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