Related Experiment Video
Updated: May 10, 2026

Oral Health Assessment by Lay Personnel for Older Adults
Published on: February 2, 2020
Prevalence of root caries among ambulant older adults living in central Chile
Rodrigo J Mariño1, Chiang S Fu2, Rodrigo A Giacaman3
1Oral Health Cooperative Research Centre, Melbourne Dental School, University of Melbourne, Melbourne, Vic., Australia.
Objective:
To assess the prevalence of root caries and the treatment needs in an ambulant population of older adults, living in the Maule Region, Chile.
Basic Research Design:
The source of primary data was the Regional Oral Health Survey. A random sample of 438 older adults, aged 65-74 years, living independently in the community was orally examined, and underwent an oral health interview.
Results:
This was a largely dentate population (74.9%). Dentate participants had 70.4% of their root surfaces with recession. Those with exposed root surfaces had an average of 29.8 root surfaces exposed. The root caries index (RCI) was 8.23%, and a mean of 0.21 and 0.55 root surfaces filled and decayed, respectively.
Conclusion:
Participants had better oral health status than previously reported. Consistent with studies conducted in independent-living older adults, root caries occurred in a lower frequency among Chilean ambulant older adults. The proportion of unmet restorative needs could be reduced. Community-based preventive care programmes specifically tailored to older adults are needed to address this challenge.
Related Concept Videos
Assessment of the Mouth
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
Tooth Anatomy
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.