Featured Research

from universities, journals, and other organizations

High-resolution CT Scan Modeling For Creating Facial Implants Aids In Facial Reconstruction Surgery

Date:
November 21, 2006
Source:
JAMA and Archives Journals
Summary:
A preliminary study suggests that high-resolution computed tomography modeling allows surgeons to custom-design acrylic implants prior to reconstructive surgery for patients with severe defects in their faces and eye cavities. Such implants appear to offer excellent aesthetic results and are well tolerated over the long term, according to a report in the November/December issue of Archives of Facial Plastic Surgery, one of the JAMA/Archives journals.

A preliminary study suggests that high-resolution computed tomography (CT) modeling allows surgeons to custom-design acrylic implants prior to reconstructive surgery for patients with severe defects in their faces and eye cavities. Such implants appear to offer excellent aesthetic results and are well tolerated over the long term, according to a report in the November/December issue of Archives of Facial Plastic Surgery, one of the JAMA/Archives journals.

Severe facial and eye cavity abnormalities may be present at birth or can occur following facial trauma or another medical procedure, such as the removal of a tumor, according to background information in the article. Surgery to correct such defects aims to restore anatomical integrity, to increase the function of the eyelids and face and to improve a patient's appearance by inserting an implant made either of the individual's own bone and tissue or synthetic materials. Typically, use of these implants, which are shaped during surgery, has failed to recreate ideal three-dimensional contours in the face. Designing synthetic implants beforehand may improve precision and contours, but concerns have been raised about the long-term implant stability and risk of infection associated with plastics and other non-organic materials.

Michael J. Groth, M.D., Jules Stein Eye Institute, Los Angeles, and colleagues assessed long-term outcomes following the use of acrylic implants in nine patients with complex facial and eye cavity defects caused by facial trauma. The five men and four women were between the ages of 28 and 63 years, with an average age of 48.7. Between one month and 40 years had elapsed since their facial injuries, which included a boating accident, motor vehicle crashes, falls and a snowboarding accident. All patients had previously undergone reconstructive procedures.

For the current investigation, the patients underwent three-dimensional high-resolution CT scanning of the face and head. These data were used to create a stone mold, from which a customized implant made of polymethyl methacrylate (PMMA, commonly known as acrylic) was cast. The implant was surgically placed and fixed using screws.

During an average of 4.3 years of follow-up, none of the patients experienced significant complications, such as infection, extrusion (forcing out) or displacement of the implant. "In all of the patients, wound healing was uneventful, with antibiotics given perioperatively," the authors write. "All of the patients demonstrated long-term sustained improvement of facial deformities," including facial symmetry and eyelid function.

"Many types of implant materials have been used for reconstructive orbitofacial surgery," they continue. "Autogenous [from the patient's body] materials such as bone grafts provide many advantages, including excellent biocompatibility and low infection and extrusion rates. However, these materials have pertinent limitations, such as the potential for a prolonged operative procedure, limited supply, significant resorption, donor site morbidity and minimal malleability and customization." Surgeons have been using materials such as PMMA to make implants for more than 45 years, and designing them beforehand offers even more advantages, including precision and improved function, they conclude.


Story Source:

The above story is based on materials provided by JAMA and Archives Journals. Note: Materials may be edited for content and length.


Cite This Page:

JAMA and Archives Journals. "High-resolution CT Scan Modeling For Creating Facial Implants Aids In Facial Reconstruction Surgery." ScienceDaily. ScienceDaily, 21 November 2006. <www.sciencedaily.com/releases/2006/11/061120182211.htm>.
JAMA and Archives Journals. (2006, November 21). High-resolution CT Scan Modeling For Creating Facial Implants Aids In Facial Reconstruction Surgery. ScienceDaily. Retrieved August 27, 2014 from www.sciencedaily.com/releases/2006/11/061120182211.htm
JAMA and Archives Journals. "High-resolution CT Scan Modeling For Creating Facial Implants Aids In Facial Reconstruction Surgery." ScienceDaily. www.sciencedaily.com/releases/2006/11/061120182211.htm (accessed August 27, 2014).

Share This




More Health & Medicine News

Wednesday, August 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

WHO Calls for Ban on E-Cigarette Sales to Minors

WHO Calls for Ban on E-Cigarette Sales to Minors

AFP (Aug. 26, 2014) The World Health Organization called Tuesday on governments should ban the sale of e-cigarettes to minors, warning that they pose a "serious threat" to foetuses and young people. Duration: 01:44 Video provided by AFP
Powered by NewsLook.com
Have You Ever Been 'Sleep Drunk?' 1 in 7 Has

Have You Ever Been 'Sleep Drunk?' 1 in 7 Has

Newsy (Aug. 26, 2014) A study published in the journal "Neurology" interviewed more than 19,000 people and found 15 percent suffer from being "sleep drunk." Video provided by Newsy
Powered by NewsLook.com
Does Medical Marijuana Reduce Painkiller Overdose Deaths?

Does Medical Marijuana Reduce Painkiller Overdose Deaths?

Newsy (Aug. 26, 2014) A new study found fewer deaths from prescription drug overdoses in states that have legalized medical marijuana. But experts disagree on the results. Video provided by Newsy
Powered by NewsLook.com
Official: British Ebola Sufferer Receiving Experimental Drug

Official: British Ebola Sufferer Receiving Experimental Drug

AFP (Aug. 26, 2014) A British nurse infected with Ebola while working in Sierra Leone is being given the same experimental drug used on two US missionaries who have recovered for the disease, doctors in London say. Duration: 00:44 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



    Save/Print:
    Share:

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile: iPhone Android Web
    Follow: Facebook Twitter Google+
    Subscribe: RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins