Word: vitreous
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...implant the replacement often causes infection or deterioration of the jawbone. A promising new technique developed by the University of Southern California school of dentistry and the Vitredent Corp. of Los Angeles seems likely to overcome both problems. The empty socket is filled with a root replacement of vitreous carbon; then the false tooth is fastened to this foundation. Carbon, the base of all living matter, is compatible with human tissue and causes no rejection, nor does it break down under the pressures of chewing. U.S.C...
...vitreous humor, the substance that fills two-thirds of the eyeball, is vital to vision. The clear, jelly-like material transmits light while maintaining the pressure that helps hold the retina in place. Hemorrhaging, which occurs often in severe diabetes, can cloud the vitreous and impair vision, and loss of its gel-like consistency can result in detachment of the retina. Both conditions can produce blindness...
Doctors now replace lost or damaged vitreous with either natural material taken from donors, saline solutions, air, silicone or other synthetics. None of those materials is completely satisfactory. The synthetics sometimes trigger toxic reactions that lead to further eye damage, the air is soon absorbed, and transplanted human vitreous may provide only short-term benefits. Now a research team at Cornell University Medical College's Rogosin Laboratories has developed a material that overcomes all these problems. According to Dr. Michael W. Dunn, he and his colleagues are using collagen, a natural body substance, to replace lost or damaged vitreous...
Filed in Pittsburgh's federal district court, the Justice Department's complaint charged that some of the companies .had huddled between November 1960 and mid-1962 to "fix, stabilize and maintain" artificially high prices for inexpensive vitreous-china fixtures, involving some $30 million in sales a year; another group had agreed, beginning in 1962, to drop low-priced (and low-profit) lines of equipment while hiking the tag on the more expensive models, involving about $1 billion in sales all told; company executives had reached their agreements and planned staggered publication of new price lists "in order...
...threaded so that it can be moved in or out to adjust its optical characteristics. And if the patient should need further major surgery, the plug can be unscrewed all the way, giving the surgeon direct access to the inside of the eyeball. As for the inside, where the vitreous humor may become clouded or lost through injury, one surgeon is using a synthetic like molasses in January...