Saliva

When it comes to keeping our teeth healthy, we usually think about brushing, flossing, fluoride, and regular dental visits. However, there is another vital part of your child’s oral health that is working all day long, saliva. Yes, spit! 

While it may not sound glamorous, saliva plays a major role in protecting your child’s teeth, gums, and overall mouth health. It helps wash away food, supports digestion, makes it easier to chew and swallow, and even helps teeth stay strong. In many ways, saliva is one of the mouth’s natural defense systems. 

What Does Saliva Actually Do? 

Saliva is made by the salivary glands and helps keep the mouth moist and comfortable. It also helps break down food and washes away food particles from the teeth and gums. This is important because leftover food and bacteria can contribute to plaque buildup and cavities. Saliva also contains minerals, including calcium and phosphate, that help support tooth enamel. Enamel is the hard outer layer of the tooth, and it needs minerals to stay strong! Throughout the day, teeth naturally lose and regain minerals, especially after eating or drinking. Saliva helps with that repair process. 

Saliva vs. Sugar: The Daily Tug-of-War 

Every time a child eats or drinks something with sugar or starch, bacteria in the mouth can use those sugars to create acids. These acids can weaken enamel over time. This process happens naturally, but problems can occur when our teeth are exposed to acid too often throughout the day. 

Saliva helps by washing away food particles and helping neutralize acids. It also brings helpful minerals back to the teeth. That is why frequent snacking, sipping sugary drinks, or going to bed after having something sweet can make it harder for saliva to do its job. 

This does not mean kids can never enjoy treats. It simply means timing and habits matter. Having sweets with a meal, choosing water between meals, and brushing before bed can all help give teeth a better chance to stay healthy. 

Why Water Helps 

Water is one of the easiest ways to support saliva and oral health. Sipping water throughout the day helps rinse the mouth and keeps kids hydrated. It is especially helpful after snacks, lunch, sports, or a sweet treat. 

What About Dry Mouth? 

Dry mouth happens when there is not enough saliva to keep the mouth wet. While anyone can occasionally feel dry-mouthed when nervous, dehydrated, or sleeping with their mouth open, ongoing dry mouth can make chewing, swallowing, speaking, and keeping teeth healthy more difficult. 

Parents may notice signs such as frequent thirst, cracked lips, bad breath, trouble swallowing dry foods, or a sticky feeling in the mouth. Certain medications, medical conditions, or breathing through the mouth can also contribute to dryness. 

Can Sugar-Free Gum Help? 

For older children who can safely chew gum without swallowing it, sugar-free gum may help increase saliva flow after meals. The American Dental Association notes that chewing sugarless gum after eating can help saliva wash away food, neutralize acids, and bring minerals like calcium and phosphate to the teeth. 

However, gum is not a replacement for brushing, flossing, healthy meals, and dental checkups at UPD. It is simply one helpful tool for some children and teens. Families should also avoid gum if a child has jaw pain, trouble chewing, or has been advised not to use it. 

Easy Ways to Support Saliva and Healthy Teeth 

Parents can help support their child’s natural tooth defenses with a few simple habits: 

• Encourage water throughout the day, especially after snacks. 

• Limit frequent sipping of juice, soda, sports drinks, or other sugary beverages. 

• Save sweets for occasional treats rather than all-day snacking. 

• Brush twice a day with fluoride toothpaste. 

• Help younger children brush until they are able to clean their teeth well on their own. 

• Keep regular dental visits so concerns can be caught early. 

The Bottom Line 

Saliva may not be something we think about often, but it is always working behind the scenes. It helps clean the mouth, supports enamel, and gives teeth a natural layer of protection throughout the day. 

Sources 

1. American Dental Association. “Chewing Gum.” MouthHealthy, American Dental Association. 

2. American Academy of Pediatric Dentistry. “Caries-risk Assessment and Management for Infants, Children, and Adolescents.” The Reference Manual of Pediatric Dentistry, American Academy of Pediatric Dentistry. 

3. National Institute of Dental and Craniofacial Research. “Dry Mouth.” National Institute of Dental and Craniofacial Research, National Institutes of Health. 

4. National Institute of Dental and Craniofacial Research. “The Tooth Decay Process: How to Reverse It and Avoid a Cavity.” National Institute of Dental and Craniofacial Research, National Institutes of Health.