Predictors of caries in old age

Area of Science:

• Geriatric Dentistry
• Oral Microbiology
• Public Health

Background:

• Dental caries remains a significant oral health issue for the elderly population.
• Understanding risk factors is crucial for developing targeted preventive strategies in older adults.

Purpose of the Study:

• To determine the incidence of dental caries over one year in elderly subjects.
• To identify factors associated with caries risk in this demographic.

Main Methods:

• Longitudinal study involving 156 elderly subjects (institutionalized and independent).
• Baseline and one-year follow-up assessments included dental examinations (missing, filled, decayed teeth), oral hygiene status (Plaque Index), salivary flow rate, and microbial culturing (Streptococcus mutans, Lactobacilli).
• Interviews collected data on medication use, dental service utilization, and sugar intake.

Main Results:

• Over one year, 71% of institutionalized and 59% of independent elderly subjects developed new decayed/filled surfaces (DFS).
• The mean DFS increment was 4.6 for institutionalized and 2.0 for independent subjects.
• Multivariate regression identified baseline caries, institutional residence, high Lactobacilli counts, poor oral hygiene, and frequent sugar consumption as significant caries risk factors.

Conclusions:

• Elderly individuals, particularly those in long-term care, are at high risk for developing new dental caries.
• Oral hygiene, diet, salivary bacterial load, and living environment are critical determinants of caries incidence in old age.
• Preventive interventions should address these multifactorial risks to improve oral health outcomes for seniors.