Featured Research

from universities, journals, and other organizations

Orthodontic researchers ask: Where's your retainer?

Date:
May 26, 2011
Source:
Case Western Reserve University
Summary:
Have you been wearing your retainer? It's a question countless parents ask of their children post-braces. Now researchers are getting serious about the question.

Have you been wearing your retainer? It's a question countless parents ask of their children post-braces. Now Case Western Reserve University School of Dental Medicine researchers are getting serious about the question.

Related Articles


"We found little written about the kinds of retainers prescribed and how compliant patients are in using them," said Case Western Reserve's Manish Valiathan, an assistant professor of orthodontics and a member of the American Board of Orthodontics. He notes that there is a dearth of information despite the devices being common in orthodontics practice.

Consequently Valiathan and fellow researchers embarked on three studies that examined how people are using retainers, which types are prescribed and what happens when patients don't follow up orthodontic work with a retainer.

After randomly sending 2,000 surveys to orthodontists throughout the country, researchers received responses from 658 practitioners regarding the kinds of retainers they prescribe. The majority (58.2 percent) prescribed removable retainers; about 40 percent opted for fixed lingual retainers that, once in place, are worn for life.

Post-braces, the majority of orthodontists said they required wearing removable retainers full-time for the first nine months and then part-time after that. They also encouraged part-time retainer use throughout life.

Valiathan said that without retainers specific prior conditions may return but that definitive research does not exist as to what conditions require ongoing retainer use. More evidence is needed, he said.

Another survey study of 1,200 patients from four practices focused on patient compliance two years after prescribing retainers. Patients self-reported and 36 percent responded to the researchers' questions regarding type of retainer used, age, gender, length of time since braces were removed, and hours per day and night retainer is worn.

The overall responses showed that 60 percent wore retainers more than 10 hours a day in the first three months and 69 percent wore them every night. By the time retainer users reached 19 to 24 months, 19 percent were not wearing retainers but 81 percent were -- even if it was only one night a week. About 4 percent never wore their retainer at all.

Research indicated that many patients were still using their original retainers two years later -- a sign that teeth had not moved, Valiathan said. Additionally, researchers found that age, gender and the type of retainer did not impact compliance.

The third study was a pilot research project. It examined the ramifications of no retainer use within the first four weeks after braces removal. Researchers measured patients' teeth before and after for spacing issues, overbites, under bites and tooth crowding.

Thirty patients had the wires removed from their braces but kept the appliances affixed to the teeth to monitor any changes without a retainer. Nearly half of the participants showed no movement, and many showed positive settling of the back teeth including the molars. Some did require additional orthodontic treatment at the end of the four weeks.

"Further studies with a larger study population will let us know if some patients can go without using retainers," Valiathan said.

He added that orthodontic researchers need to study what kinds of conditions require long-term retainer use.


Story Source:

The above story is based on materials provided by Case Western Reserve University. Note: Materials may be edited for content and length.


Journal References:

  1. Kurtis A. Kacer, Manish Valiathan, Sena Narendran, Mark G. Hans. Retainer wear and compliance in the first 2 years after active orthodontic treatment. American Journal of Orthodontics and Dentofacial Orthopedics, 2010; 138 (5): 592 DOI: 10.1016/j.ajodo.2008.12.027
  2. Manish Valiathan, Eric Hughes. Results of a survey-based study to identify common retention practices in the United States. American Journal of Orthodontics and Dentofacial Orthopedics, 2010; 137 (2): 170 DOI: 10.1016/j.ajodo.2008.03.023
  3. Nadia Lyotard, Mark Hans, Suchitra Nelson, Manish Valiathan. Short-term postorthodontic changes in the absence of retention. The Angle Orthodontist, 2010; 80 (6): 1045 DOI: 10.2319/010210-7.1

Cite This Page:

Case Western Reserve University. "Orthodontic researchers ask: Where's your retainer?." ScienceDaily. ScienceDaily, 26 May 2011. <www.sciencedaily.com/releases/2011/03/110324103153.htm>.
Case Western Reserve University. (2011, May 26). Orthodontic researchers ask: Where's your retainer?. ScienceDaily. Retrieved November 21, 2014 from www.sciencedaily.com/releases/2011/03/110324103153.htm
Case Western Reserve University. "Orthodontic researchers ask: Where's your retainer?." ScienceDaily. www.sciencedaily.com/releases/2011/03/110324103153.htm (accessed November 21, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, November 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

UN Says It Will Scale Up Its Ebola Response

UN Says It Will Scale Up Its Ebola Response

AFP (Nov. 20, 2014) UN Resident Coordinator David McLachlan-Karr and WHO representative in the country Daniel Kertesz updated the media on the UN Ebola response on Wednesday. Duration: 00:51 Video provided by AFP
Powered by NewsLook.com
Takata Offers "sincerest Condolences" To Victims of Malfunctioning Airbag

Takata Offers "sincerest Condolences" To Victims of Malfunctioning Airbag

Reuters - US Online Video (Nov. 20, 2014) U.S. Congress hears from a victim and company officials as it holds a hearing on the safety of Takata airbags after reports of injuries. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Obesity Costs Almost As Much As War And Terrorism

Obesity Costs Almost As Much As War And Terrorism

Newsy (Nov. 20, 2014) The newest estimate of the cost of obesity is pretty jarring — $2 trillion. But how did researchers get to that number? Video provided by Newsy
Powered by NewsLook.com
Calling All Men: Here's Your Chance to Experience Labor Pains

Calling All Men: Here's Your Chance to Experience Labor Pains

Reuters - Light News Video Online (Nov. 20, 2014) Chinese hospital offers men a chance to experience the pain of child birth via electric shocks. Sharon Reich reports. Video provided by Reuters
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:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

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