Sugar and Teeth: How Sweet Treats Damage Your Dental Health & Prevention Tips

Sugar is nearly everywhere – from morning coffee to sweets and our favorite desserts. Carbohydrate-rich foods can also be a source of hidden added sugar. While it provides a boost of satisfaction to the palate, it can wreak havoc on our teeth and health.

The Pervasive Problem of Sugar and Dental Health

This isn’t a minor issue. Tooth decay, closely linked to sweets and sugar, is considered one of the most widespread chronic diseases in the world. According to data from the Atlas of Oral Health in Spain, compiled by the General Council of Dentists, untreated caries in permanent teeth has a prevalence of 40%.

In children, tooth decay is closely related to frequent consumption of fermentable carbohydrates, meaning any type of sugar consumed frequently can cause cavities, according to the Spanish Society of Pediatric Dentistry (SEOP). The World Health Organization (WHO) specifically mentions the strong association between the intake of free sugars and dental caries in its protocols.

The Multifactorial Nature of Caries

However, as dentist Esther Aparicio Moreno recognizes, “caries is a multifactorial disease in which aspects such as oral hygiene, enamel quality, saliva, the frequency of dental check-ups and cleanings, oral bacteria, and, of course, eating habits play a role.” Within these habits, “sugar plays a key role because It’s the ‘fuel’ for the bacteria that produce the acids that damage the tooth,” Aparicio admits.

What Happens in Your Mouth When You Eat Sweets?

To understand why sugar damages teeth, we must start with some science. Sugar plays a determining role in dental caries because it feeds oral bacteria. When consuming sugary foods or beverages, these bacteria break down the sugar and produce acid. This acid attacks the enamel, the outer protective layer of the teeth, causing problems such as demineralization and, cavities. As the acid wears away the tooth enamel, small holes form, making teeth vulnerable and at risk of further cavities and infections.

Aparicio notes that some studies have shown that “it’s not just the quality, but above all the frequency: snacking on small amounts many times a day is more harmful than a single consumption.”

Even without immediate cavities, frequent sugar consumption can erode tooth enamel over time. Once this protective layer disappears, it does not grow back, leaving teeth more sensitive and prone to damage. Frequent sugar intake, combined with inadequate oral hygiene, increases the risk of cavities and other dental health problems.

Prevention: Limiting Problematic Foods

The good news is that cavities are preventable, and it’s important to start in early childhood. As we’ve seen, one of the most important things isn’t the amount of sugar we consume, but how often we consume it. The most effective way to avoid cavities, although difficult, is to consume sugar less frequently.

The SEOP advises avoiding all sources of refined sugars during the first two years of life, when children are most exposed to a virulent process of caries. Special care should also be taken with “the most problematic foods, such as sticky sugars or frequently consumed items like pastries, candies, sweets, soft drinks, juices, and even some ‘healthy’ snacks or energy drinks, which go unnoticed. Hidden sugar is the great silent enemy,” warns Aparicio.

The World Health Organization (WHO) recommends that both children and adults reduce their daily intake of free sugars to less than 10% of total daily energy intake. The WHO guidelines recommend limiting daily free sugar intake to less than 10% of total energy intake, ideally less than 5%, in both adults and children to minimize the risk of dental caries throughout life.

in the fight to prevent cavity formation, “reducing sugar helps a lot, but doesn’t guarantee zero risk. The key is balance: good daily hygiene with fluoride, regular check-ups with a trusted dentist, a conscious diet, and giving saliva time to neutralize acids between meals,” advises Aparicio.

For the specialist, a good way to prevent cavities is to “eat sweets at specific times and not ‘snack’ all day, accompany it with water and don’t forget good brushing before bed, reviewing the interdental spaces with dental floss.”

Frequently Asked Questions

What causes tooth decay?

Tooth decay is caused by acid produced by bacteria in the mouth when they break down sugars. This acid attacks the tooth enamel, leading to cavities.

Is it better to eat a lot of sugar at once or a little bit throughout the day?

According to some studies, it is more harmful to snack on small amounts of sugar many times a day than to consume it all at once.

What does the WHO recommend regarding sugar intake?

The WHO recommends limiting daily free sugar intake to less than 10% of total energy intake, ideally less than 5%, to minimize the risk of dental caries.

Are you mindful of your sugar intake and its potential impact on your dental health?