Is Gingivitis Contagious? Sharing Smiles, Not Gum Disease

Gingivitis is the earliest stage of gum disease, marked by red, swollen gums that may bleed during brushing or flossing. It’s caused by the buildup of harmful bacteria along the gumline.

But a question many people don’t think to ask is: Can you catch gingivitis from someone else?

The short answer is yes—to a degree. While gingivitis itself isn’t contagious in the same way as the flu or a cold, the bacteria that cause it can be passed from person to person, especially through shared saliva.

How Does Gingivitis Develop?

Your mouth naturally contains hundreds of types of bacteria. When you don’t brush and floss properly, these bacteria multiply and form a sticky film called plaque. If plaque isn’t removed, it hardens into tartar, irritating the gums and causing inflammation—aka gingivitis.

Left untreated, gingivitis can progress to more severe forms of gum disease like periodontitis, which can damage the bone supporting your teeth and even lead to tooth loss.

Can You Catch It from Someone Else?

You can’t “catch” gingivitis the same way you catch a virus. However, you can be exposed to the bacteria that cause it. These bacteria are often spread through activities like:

• Kissing
• Sharing utensils or drinks
• Using the same toothbrush
• Letting children put your fingers in their mouths (or vice versa)

If the other person has gingivitis or a high level of harmful oral bacteria, and your own oral hygiene is lacking, you’re more likely to be affected. This is especially true for children, whose oral health habits are still developing, or for adults with weakened immune systems.

Prevention Is Key

Even if you’re exposed to someone else’s oral bacteria, that doesn’t guarantee you’ll get gingivitis—as long as you maintain good oral hygiene.

Here’s how to lower your risk:

• Brush your teeth at least twice a day
• Floss daily to remove plaque between the teeth
• Visit your dentist for regular cleanings and checkups
• Avoid sharing toothbrushes, eating utensils, or drinks
• Consider using an antibacterial mouthwash

If someone in your household has gum disease, it’s wise for everyone in the family to stay diligent about dental care. Gum disease tends to run in families not just because of shared habits, but because of shared bacteria.

Signs to Watch For

If you notice any of the following symptoms, it’s time to visit your local dentist in Loveland, OH, right away:

• Red or puffy gums
• Bleeding while brushing or flossing
• Persistent bad breath
• Receding gums
• Tenderness or pain when eating

Catching and treating gingivitis early can prevent more serious problems later on.

About the Practice

At Gerome & Patrice Family Dentistry, our compassionate team is committed to helping patients of all ages achieve their healthiest smiles. Dr. Mark Gerome and Dr. Gina Patrice bring years of experience and advanced training to deliver comprehensive dental care in a welcoming, family-friendly environment. Whether you need a routine cleaning, gum disease treatment, or cosmetic care, our Loveland dental office is here to help you smile with confidence.

Call us at (513) 647-4973 or request an appointment online.