Of the factors that increase the resistance of teeth to dental caries, which is the most effective?

The most effective factor that increases the resistance of teeth to dental caries is the periodic topical fluoride application by dental health care professionals. This approach directly enhances the strength and resilience of tooth enamel, making it more resistant to demineralization caused by acidic attacks from bacteria in dental plaque.

Topical fluoride works in several key ways. It helps to remineralize early decay lesions and integrate into the enamel structure to create a more acid-resistant mineral. Regular applications by dental professionals ensure a consistent and controlled exposure to fluoride, maintaining its protective effects over time. This proactive approach is particularly important for individuals who may be at higher risk of developing caries, such as children or those with other oral health challenges.

While other factors like nutrition, fluoride intake during enamel development, and sufficient intake of calcium and Vitamin D contribute to overall dental health, they lack the immediate and direct impact on tooth enamel that professional fluoride treatments provide. These nutritional elements are vital for the foundational development of teeth but do not offer the targeted protective benefits that regular fluoride treatments do once the teeth are formed.