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The Daily Tar Heel Thursday, September 1 1 , 19865
1 1 . . .
New methods improve
dental and surgical care
By ELENI CHAMIS
Advances in medical technol
ogy are changing the way the
Chapel Hill area thinks about
Dentistry is being improved by
a new procedure called bonding.
Bonding gives patients a quick,
effective, rather inexpensive end
to a problem that could relapse
and cost a bundle. It closes gaps
in teeth, recontours, covers stains
and puts facades on the fronts of
teeth. It can even be used to
replace a missing tooth by bond
ing a false tooth into the space.
Bonding costs about $60 a
tooth and is a simple process, said
Dr. James B. Reddin.
According to Dr. Harald O.
Heymann, assistant professor of
operative dentistry at the UNC
School of Dentistry, dentists
clean and dry the tooth and then
continue with a process called
"acid etching," in which the tooth
enamel bonds with the filling
material needed to repair the
tooth. For a short period of time,
the dentist applies phosphoric
acid to the tooth. He brushes resin
into the newly opened micros
copic pores. Next a paste contain
ing small bits of silica, quartz or
other glass is applied to the tooth
and it bonds with the tooth
enamel. The paste is then molded
and contoured to the proper
shape. Finally, the tooth is
smoothed and polished.
Unless a patient requests it, no
anesthetic is given.
Eventually, bonding needs to
be replaced due to wear or
staining. Usually the restoration
lasts up to five years, but no
"Patients realize that the
advantages of tooth bonding far
outweigh the disadvantages and
are quite receptive to bonding
procedures even though they
know these restorations won't last
a lifetime," Heymann said.
"Because of the painless con
servative nature of tooth bonding,
many of the cosmetic procedures
will become as second nature as
getting your hair styled," he said.
Student Health Services will
not do bonding, but it is adding
dentistry to its list of services.
There will be a dentist in the office
twice a week to advise students,
according to Dr. Judith Cowan,
director of Student Health
While some technology is less
available to students, it is affect
ing other fields of medicine. In
obstetrics gynecology and optha
mology, laser surgery is perform
ing state-of-the-art operations.
Two different types of laser
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The first, laser canaliculo
plasty, is for people who have
contact lens trouble because their
eyes do not produce enough
tears." An argon laser solves the
problem by closing off the
patient's tear canals to let the
natural tears stay in his eyes 40
to 60 percent more," Robin
Cannady, CM. A with Simel
Surgical Eye Associates in
-The second type, laser trabe
culoplasty, is used on glaucoma
patients ffco are losing their
vision. "We penetrate holes back
in their eyes, let the fluids flow
and not build up," Cannady said.
In obstetrics gynecology, laser
surgery is bringing cures too.
With a carbon dioxide laser,
professionals treat displeasure of
the cervix, warts of the cervix and
a few cases of herpes. An instru
ment called a coposcopy enlarges
the cervix and makes it possible
to locate and burn away bad
"The tissue sloughs off in a
week or two and the new tissue
remains," Debbie Shelton, an RN
from Winston-Salem, said.
Shelton said the procedure
runs about $350, and insurance
companies usually pay for it.
Laser technology is costly,
. according to Dr. David E. Eifrig,
chairman of the Department of
Opthamology at North Carolina
Memorial Hospital. An argon
laser runs as much as $35,000; a
krypton laser costs $50,000.
Another process called litho
tripsy is helping those with kidney
stones. Lithotripsy is a non
surgical treatment which involves
an electrode that resembles a
nine-inch spark plug, according
to Mary Beth Stanley, the public
relations director at Piedmont
Stone Center in Winston-Salem.
The patient is lowered into a
metal tub filled with water. The
electrode is fired, causing a shock
wave that makes the water evap
orate. When the wave is pin
pointed, the patient is moved over
the wave. The brittle stone is
forced to break up.
According to Susan Dancey,
an X-ray technician at the Bow
man Gray School of Medicine in
Winston-Salem, "The procedure
runs about $4,300. That's for two
days and two nights in a hospital.
Some places charge twice that."
Lithotripsy has not yet come
to the Chapel Hill area. Judy
Benoit, clerical supervisor at
NCMH, said that NCMH sends
most of its patients to
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By ROBBIE DELLINGER
More than $15,000 of illegally
obtained computer programs are
scattered around a UNC senior's
A computer hacker's paradise, it
is complete with programs ' word
processing, business accounting,
video games stored on dozens of
floppy disks that overflow their
storage containers onto his shelves,
desk, computer and finally, the floor.
"It's no big deal," he said. "Steal
ing programs is easy to do. Everyone
But software piracy is a big deal
to manufacturers, who stand to lose
millions each year in potential sales,
according to Rick Snodgrass, a UNC
assistant professor of computer
science. And manufacturers there
fore design protective codes to
prevent disks from being copied.
Generally, hackers pirate commer
cial software by using "breaker"
programs. The programs, developed
either commercially or by amateurs,
are designed to break the codes.
According to Snodgrass, the
legality of these commercial pro
grams is under consideration by the
courts, but so far no final verdict
has been reached. "It's not clear
whether you can get a patent on
software, because it sn human
readable," he said. "The law is very
far behind the technology."
According to Snodgrass, there is
Mime troupe to move through
the highlights from a decade
By BETH RHEA
TOUCH Mime Theatre a
Triangle-based mime production
company, will present highlights of
its work from the last 10 years in
performances this weekend at the
ArtSchool in Carrboro.
"TOUCH Ten Years" will include
current works as well as some that
the group has not performed before.
Three mimes and a composer form
TOUCH, which was founded in 1976
by Sheila Kerrigan and Jef. The
other members are Skip Mendler
and Paul Whetstone, who became
the group's pianist.
"If you have seen mime, you
haven't seen what we do," said
founding member Kerrigan. "We
lean more toward theater."
The TOUCH troupe has deve
loped its own unique style, combin
ing mime with theater. Over the past
10 years it has adopted various
components of theater such as
masks, costumes, speech and instru
mental sound effects.
"TOUCH mime is different from
what a lot of people think mime is,"
Jef said. "It's physicalizing
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a constant battle between software
developers and breakers, since each
new edition of software generally has
a new protective code and breakers
must continually develop' new pro
grams to meet the challenge.
"The (best) way to steal programs
is to get involved in a; computer
network called a bulletin board,'
which operates over telephone lines,
said the senior from Charlotte. "It's
like a computer underground. Once
you learn the passwords, it's a
common source for everybody to
exchange different programs they Ye
broken." ' -i i
He said that a modem, which
allows the computer to communicate
over telephone lines, makes the
networks accessible, and! therefore
broader piracy is possible. "Almost
any system that communicates over
the phone is vulnerable (tp piracy),"
According to Arthur Summey, a
detective lieutenant of the Chapel
Hill Police Department, gaining
unauthorized access to any computer
system constitutes a felony under
North Carolina Statute 14-554 and
is punishable by imprisonment of up
to 10 years or a fine or both. Copying
commercial disks through the use of
a breaker program is an infringement
of federal copyright laws.
"I don't worry about 'getting in
trouble," said a sophomore from
Greensboro who is guilty on both
TOUCH has established a repu
tation for combining a : sense of
humor with an interest in the effects
of technology on people, producing
what some critics have labeled
. - . - ; ' '.- -
"We don Y like to be beaten over
the head with morals or' to be told
what is right and wrongj" Kerrigan
said. For that reason, TOUCH uses
comedy as a medium to make strong
statements about the societal effects
of modern products such as televi
sions and alarm clocks.; r
During the past decade they have
performed at hospitals, prisons,
schools, theaters, outdoor festivals
and on television. The performance
this weekend will be the company's
last show in affiliation with Art
School. From then on TOUCH will
be an independent organization.
For this weekend's special perfor
mance, TOUCH has invited former
members to perform as guest artists.
"TOUCH Ten Years" will be
performed by TOUCH Mime Thea
tre tomorrow and Saturday at 8 p.m.
at ArtSchool. Call 929-2896 for
312 west Franklin St.
Chapel Hill. N.C 27514 933r2222
Hours: Mon.-Sat. 10 AM -"5 PM
counts. "There's just no chance of
getting caught with an operation this
small. Have you ever heard of
anybody being arrested for recording
an album? No way."
Snodgrass agreed that software
piracy is difficult to detect. He said
that most of the program theft on
campus consists of copying compu
ter class assignments and commer
cial disks. "Usually, students who
steal programs will simply take a
program printout from the trashcan.
Sometimes they will use a breaker
program to copy a disk they've
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stolen," he said.
According to Snodgrass, breakers
were originally designed to provide
copies for professionals who could
be seriously hindered if their original
software failed, but this idea has been
"(Software piracy) isn't like 'War
Games,"' a senior from the Triangle
area said. "The authorities are not
going to come get you. Stealing
programs happens all the time.
Everybody does it and everybody
gets away with it. And nobody can
really do anything about it."
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