jaw

U-M scientist to talk about tissue engineering at AAAS

...shing such feats is more complex. Regenerating the jaw bone of a person undergoing radiation therapy for ...eintroducing the cells into a damaged area, like a jaw bone damaged too badly to simply heal on its own. A tiny scaffold helps direct the engineered cells ...

Penn Researchers Use Robotic Surgery

...to-ear incision across the throat or splitting the jaw in half. This can result in speech and swallowing deficits for patients. "The research we've done to date suggests that TORS has great potential to improve the way we treat head and neck cancer patients," said Bert O'Malley, Jr., MD, Chair of PENN's ...

Two new retroviruses—transmitted from animals—identified

...to-ear incision across the throat or splitting the jaw in half. This can result in speech and swallowing deficits for patients. "The research we've done to date suggests that TORS has great potential to improve the way we treat head and neck cancer patients," said Bert O'Malley, Jr., MD, Chair of PENN's ...

Revueltosaurus skeleton unearthed at Petrified Forest upsets dinosaur tale

...rought a colleague to the site and she picked up a jaw with teeth. During May and June of 2004, Parker, Irmis and their coauthors excavated one complete Revueltosaurus skeleton from the 6-square meter quarry they dug, plus bones from more than a dozen other individuals. In June of 2005, a second relative...

Agilent Technologies introduces high-capacity human protein removal system for proteomics research

...rought a colleague to the site and she picked up a jaw with teeth. During May and June of 2004, Parker, Irmis and their coauthors excavated one complete Revueltosaurus skeleton from the 6-square meter quarry they dug, plus bones from more than a dozen other individuals. In June of 2005, a second relative...

Researchers find first evidence of venom system in extinct mammal

... from its source in glandular tissues in the upper jaw down the height of the crown to its tip," Fox explained. "When I first saw [the groove] I thought maybe it was a cavity," said Yong-Qin Sun, the lab technician who prepared the fossil, which is one of thousands that the U of A researchers have colle...

Researchers track down cause of a disfiguring bone disorder

...The effect primarily occurs in the skull and lower jaw of Van Buchem patients, causing facial distortions and pinching cranial nerves, which can lead to deafness and blindness. Collarbones, ribs and long bones can also be affected. The research team, led by Gabriela Loots of Livermore's Genome Biology D...

Thinking the pain away? Study shows the brain's painkillers may cause 'placebo effect'

...en who agreed to allow researchers to inject their jaw muscles with a concentrated salt water solution to... and after the scan during which they received the jaw injection alone. Nine of the participants were classified as "high placebo responders" because they...

Researchers identify new catfish family

...e air bladder. "The ictalurids all have these big jaw muscles that come up over the top and anchor on top of the head" Hendrickson said. "This has a very narrow cranium and the muscles anchor to the sides of the bone instead of coming up on top. That and a number of other characters clearly indicate it ...

The roots of civilization trace back to ... roots

...nah dwelling apes evolved into large massive jaws, jaw muscles and molars, ideal for grinding roots instead of shearing leaves. The size of the teeth and jaws reflect the apes' secondary food source (roots) instead of primary foods like meats and fruits, which do not require such massive chewing abiliti...

“Hitchhiking?Viruses as Cancer Drug Delivery System

...nah dwelling apes evolved into large massive jaws, jaw muscles and molars, ideal for grinding roots instead of shearing leaves. The size of the teeth and jaws reflect the apes' secondary food source (roots) instead of primary foods like meats and fruits, which do not require such massive chewing abiliti...

New research puts a fresh spin on current thinking of speech evolution in humans

...e identified a distinct brain region that controls jaw movements in macaque monkeys that is comparable to...al and facial motor responses were evoked ?such as jaw movement sequences, as well as respiratory responses. In addition, Broca's area is connected with a ...

Changes to embryos can elicit change in adult fish

...nction of a simple biomechanical system, the lower jaw of the cichlid fish. In addition, they've shown th...National Academy of Sciences. "We're using the jaw to think about the genetic basis of biomechanical systems," said J. Todd Streelman, assistant profes...

Fossil find: 'Godzilla' crocodile had head of a dinosaur, fins like a fish

...f the skull combined with a telltale groove in its jaw to prove its lineage. “This is the most remarkable change in the size and shape of the teeth and snout in the history of marine crocs,?Pol said. The three fossil specimens were found in 1996 ?one on farmland in the Mendoza province of Patagonia , a...

'Banana-jawed' fossil mammal linked to rare sound-producing skill

...ch one? Previous research, he said, suggested such jaw structures likely were found in females. The rese...nalyzed incisor teeth, located in the front of the jaw and used for biting. In modern hyraxes, males have larger incisors than females. Among the fossils a...

Birds that make teeth

...mouse tooth-forming tissue is in contact with bird jaw tissue, the bird tissue is able to follow the inst...ermits tooth formation in both the upper and lower jaw of embryonic birds. These teeth show similar developmental position as mammalian teeth and are assoc...

Male rivalry increases when females at most fertile, say researchers

...high or low in dominant features, such as a strong jaw lines and thinner lips, were shown to male participants who provided ratings of dominance for each image. A dominant person was defined as someone who looked like they could 'get what they wanted'. Participants were asked to provide information o...

Less is more, gene study shows

...ion, humans lost a gene that produces a particular jaw muscle protein. Perhaps the loss of that gene gave us smaller jaw muscles, making room in our skulls for bigger brains. That's just speculation, and until now there ...

Relationship of brain and skull more than just packaging

...ate evolution shows a trend toward fewer skull and jaw bones and loss of some intercranial joints. While craniosynostosis is considered a pathology in modern humans, it shares with evolutionary history a reduction in cranial elements and coincident changes in the shape of the skull and brain. The researc...

Ultrasound may help regrow teeth

...t offers a non-invasive and novel way to stimulate jaw growth and dental tissue healing. "It's very exci... results. He has also shown that LIPUS can improve jaw growth in cases with hemifacial microsomia, a congenital syndrome where one side of the child's jaw ...

Ohio University researchers discover evolutionary oddity in flamingos

...the study. "We were investigating the evolution of jaw muscles in lizards, birds and dinosaurs. By sheer ...gos." To get a detailed look at the flamingo's jaw muscle structure, the researchers injected a colored barium/latex mixture into the blood vessels of ...

Researchers give name to ancient mystery creature

...mammals. Based on careful examination of tooth and jaw fragments that have been unearthed over the past 30 years, the University of Alberta researchers have now determined Horolodectes was a small fur-bearing animal that measured 10 centimetres in length and due to its powerful jaws, likely had a strong ...

Pleasure and pain: Study shows brain's 'pleasure chemical' is involved in response to pain too

...en the researchers induced pain in the volunteers' jaw muscle, and asked them to rate different aspects o...tup, which included a needle inserted into a large jaw muscle, and the expectation of pain and repeated questioning. Similarly, dopamine release in two...

Tiny bones rewrite textbooks

...ls as well. The tiny fossilised bones - part of a jaw and a leg - belonged to a unique, mouse-sized land animal unlike any other mammal known. They were unearthed from the rich St Bathans fossil bed, in the Central Otago region of South Island. But the real shock to scientists was that it was there at...

Sensory feedback during speech: The brain attunes to more than just sound

...g robotics to manipulate the brain's perception of jaw movement while words are spoken, researchers have ...those that inform the brain of the openness of the jaw or the changing positions of the tongue or lips. To investigate how such somatosensory cues are u...

Faster, low cost sequencing technologies needed to drive era of personalized medicine

...f their inherited DNA, or genome, would drop their jaw at the sight of the bill -- to the current tune of $10 million or more charged for every human or mammalian-sized genome sequenced. Now, with a grant award from the National Human Genome Research Institute (NHGRI), scientists at the Biodesign Instit...

Man's earliest direct ancestors looked more apelike than previously believed

...rain and more vertical face with a less pronounced jaw and smaller teeth at least 300,000 years later tha...struction, by contrast, shows a sharply protruding jaw and a brain less than half the size of a modern human"s. These characteristics make the 1.9 million...

Ladybugs may be cute, but watch out when they get near wine

...rain and more vertical face with a less pronounced jaw and smaller teeth at least 300,000 years later tha...struction, by contrast, shows a sharply protruding jaw and a brain less than half the size of a modern human"s. These characteristics make the 1.9 million...

No sex for 40 million years? No problem

...ies. Using a combination of DNA sequencing and jaw measurements taken using a scanning electron micro...its chest, yet they have diverged in body size and jaw shape to occupy these distinct ecological niches. Our results show that, over millions of years, nat...

Computer imaging assists with facial reconstructive surgery

... the chin through the point where the neck and the jaw connect Mentocervical angle: the intersection of a line drawn from the tip of the nose to the chin and a line drawn next to the neck Facial convexity angle: the intersection of a line drawn from the forehand to the chin and a line drawn from the ...

Paleontologists discover new mammal from Mesozoic Era

...mal middle ear bones evolved from the bones of the jaw hinge in their reptilian relatives. However, paleo...the evolutionary pathway via which these precursor jaw bones became separated from the jaw and moved into the middle ear of modern mammals. "Now we have...

Ancient amphibians evolved a bite before migrating to dry land

...ving fish exhibit an incredible array of tooth and jaw shapes, suggesting that, ironically, direct analysis of fossil jaws would be a less precise means of determining the feeding methods of extinct species, Markey says. "Analysis of the sutures of the early amphibian species Acanthostega revealed th...

Fused nasal bones helped tyrannosaurids dismember prey

...ls, enlarged areas for attachment and expansion of jaw muscles and the consequent ability to bite deeply ..."The T. rex especially had a very strong skull and jaw muscles that would turn it into a zoological superweapon. A medium-sized T. rex had even more sk...

Dinosaur hearing, listening to muscle noise, quieter cubicles

..., you can hear the sound of the masseter muscle--a jaw muscle used in chewing food-by propping your head (ear down) in the palm of your hand. The low rumbling comes from the shortening of the actomyosin filaments in the muscle fibers. Muscle noise can be measured using various sensors, such as micropho...

Experimental gene therapy 'abolishes' arthritis pain and lessens joint damage

... dentistry: a common site of arthritic pain is the jaw joint. Study Details Proteins called recep... messages back and forth between an osteoarthritic jaw joint and the spinal cord. Thus, nerve cells involved in pain transmission, with so many more recept...