Featured Research

from universities, journals, and other organizations

Steep decline in tooth loss, increase in socioeconomic disparities found by study

Date:
August 21, 2014
Source:
International & American Associations for Dental Research
Summary:
Edentulism (tooth loss) has been the focus of a recent study, which traced it over the last hundred years. The project's report highlights the numbers of people losing teeth and requiring dentures. The single most influential determinant of the decline was the passing of generations born before the 1940s, whose rate of edentulism incidence far exceeded later cohorts. High income households experienced a greater relative decline, although a smaller absolute decline, than low income households.

The International and American Associations for Dental Research (IADR/AADR) have published a paper titled "Projections of U.S. Edentulism Prevalence Following Five Decades of Decline." This study, by lead researcher Gary Slade, University of North Carolina at Chapel Hill, USA, follows edentulism (tooth loss) over the last hundred years and highlights the numbers of people losing teeth and requiring dentures. It is published in the OnlineFirst portion of the IADR/AADR Journal of Dental Research (JDR).

The researchers of this study investigated population trends in edentulism among U.S. adults at least 15 years of age by creating time-series data from five national cross-sectional health surveys: 1957-1958 (n=100,000 adults); 1971-1975 (n=14,655 adults); 1988-1998 (n=18,011 adults); 1999-2002 (12,336 adults) and 2009-2012 (n=10,522 adults). Birth cohort analysis was used to isolate age and cohort effects. Geographic and sociodemographic variation in prevalence was investigated using a sixth U.S. survey of 432,519 adults conducted in 2010. Prevalence through 2050 was projected using age-cohort regression models with simulation of prediction intervals.

Across the five-decade observation period, edentulism prevalence declined from 18.9% in 1957-1958 to 4.9% in 2009-2012. The single most influential determinant of the decline was the passing of generations born before the 1940s, whose rate of edentulism incidence (5-6% per decade of age) far exceeded later cohorts (1-3% per decade of age). High income households experienced a greater relative decline, although a smaller absolute decline, than low income households.

By 2010, edentulism was a rare condition in high-income households and it had contracted geographically to states with disproportionately high poverty. With the passing of generations born in the mid-20th century, the rate of decline in edentulism is projected to slow, reaching 2.6% (95% prediction limits [PL]:2.1%, 3.1%) by 2050. The continuing decline will be offset only partially by population growth and population aging, such that the predicted number of edentulous people in 2050 (8.6 million, 95%PL: 6.8 million, 10.3 million) will be 30% lower than the 12.2 million edentulous people in 2010.

"While it's encouraging to know that this study by Dr. Gary Slade illustrates a steep decline in U.S. edentulism over the past five decades, these health gains in absolute terms have not been distributed equally," said AADR President Timothy DeRouen. "Additional public health measures must be taken to reduce tooth loss in low-income populations."


Story Source:

The above story is based on materials provided by International & American Associations for Dental Research. Note: Materials may be edited for content and length.


Journal Reference:

  1. G. D. Slade, A. A. Akinkugbe, A. E. Sanders. Projections of U.S. Edentulism Prevalence Following 5 Decades of Decline. Journal of Dental Research, 2014; DOI: 10.1177/0022034514546165

Cite This Page:

International & American Associations for Dental Research. "Steep decline in tooth loss, increase in socioeconomic disparities found by study." ScienceDaily. ScienceDaily, 21 August 2014. <www.sciencedaily.com/releases/2014/08/140821115845.htm>.
International & American Associations for Dental Research. (2014, August 21). Steep decline in tooth loss, increase in socioeconomic disparities found by study. ScienceDaily. Retrieved September 15, 2014 from www.sciencedaily.com/releases/2014/08/140821115845.htm
International & American Associations for Dental Research. "Steep decline in tooth loss, increase in socioeconomic disparities found by study." ScienceDaily. www.sciencedaily.com/releases/2014/08/140821115845.htm (accessed September 15, 2014).

Share This



More Health & Medicine News

Monday, September 15, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

FDA Eyes Skin Shocks Used at Mass. School

FDA Eyes Skin Shocks Used at Mass. School

AP (Sep. 15, 2014) The FDA is considering whether to ban devices used by the Judge Rotenberg Educational Center in Canton, Massachusetts, the only place in the country known to use electrical skin shocks as aversive conditioning for aggressive patients. (Sept. 15) Video provided by AP
Powered by NewsLook.com
Respiratory Virus Spreads To Northeast, Now In 21 States

Respiratory Virus Spreads To Northeast, Now In 21 States

Newsy (Sep. 14, 2014) The respiratory virus Enterovirus D68, which targets children, has spread from the Midwest to 21 states. Video provided by Newsy
Powered by NewsLook.com
Shocker: Journalists Are Utterly Addicted To Coffee

Shocker: Journalists Are Utterly Addicted To Coffee

Newsy (Sep. 13, 2014) A U.K. survey found that journalists consumed the most amount of coffee, but that's only the tip of the coffee-related statistics iceberg. Video provided by Newsy
Powered by NewsLook.com
Contagious Respiratory Illness Continues to Spread Across U.S.

Contagious Respiratory Illness Continues to Spread Across U.S.

Reuters - US Online Video (Sep. 12, 2014) Hundreds of children in several states have been stricken by a serious respiratory illness that is spreading across the U.S. Linda So 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:
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