Swollen Gums: What Causes Them and When to Worry

Your gum is puffy, red, and tender. Maybe it bleeds when you brush. Maybe it is one spot around a single tooth, maybe the whole gumline.

Swollen gums are one of the most common reasons people search for a dentist. The useful question is not what causes gum swelling in general. It is which of the seven causes is yours, because some clear up in a week at home and one of them belongs in an emergency chair today.

First, the part that decides everything

Healthy gums are firm, pale pink, and sit tight against the tooth. They do not bleed when you brush.

Swelling is inflammation, which means your body is reacting to something. Get rid of the something and the swelling goes. That is why the fix depends entirely on the cause, and why rinsing alone works beautifully in some cases and does nothing in others.

The seven causes, from most to least common

1. Gingivitis

The leading cause by a wide margin. Plaque builds up along the gumline, the gums get red, puffy, and bleed easily.

The good news is that gingivitis is fully reversible. No permanent damage yet. Better brushing, daily flossing, and a professional cleaning usually turn it around in a couple of weeks.

Left alone, it advances into periodontitis, which is not reversible. Our guide on gingivitis vs periodontitis explains where that line sits.

2. Trapped food

A popcorn hull, a seed, a shred of meat pushed under the gumline. The gum reacts around one specific spot.

This is the happiest diagnosis on the list. Careful flossing gets it out and the swelling settles in a day or two.

3. Tartar below the gumline

Plaque that hardened. Once it is tartar, brushing will not remove it, and it sits there irritating the gum continuously.

This is the most common reason someone with genuinely good habits still has swollen gums. It needs a deep cleaning to come off.

4. A tooth abscess

Infection at the root. This one usually announces itself: throbbing pain, a bad taste, sometimes a pimple-like bump on the gum that drains.

An abscess does not resolve on its own. Read gum abscess symptoms and treatment for the danger signs.

5. A wisdom tooth coming in

A partially erupted wisdom tooth leaves a flap of gum over it that traps food where no brush reaches. It flares, calms down, and flares again.

6. Hormonal changes

Pregnancy, puberty, and menopause all make gum tissue respond more strongly to the same plaque. Pregnancy gingivitis is common in the second trimester and is worth treating, not waiting out.

7. Medications and medical conditions

Some blood pressure drugs, anti-seizure medications, and immunosuppressants cause gum overgrowth. Dry mouth from any medication raises risk. Uncontrolled diabetes and vitamin C deficiency both show up in the gums.

If your gums changed after starting a new medication, mention it. That connection is easy to miss and it changes what we recommend.

When it is one tooth versus the whole mouth

This distinction narrows things down faster than anything else.

The whole gumline is puffy and bleeds when you brush. That pattern points to plaque, tartar, hormones, or a medication. It is usually gingivitis and usually manageable.

One spot around one tooth points to something local: trapped food, a cracked tooth, decay, a failing filling or crown with a gap underneath, an abscess, or a wisdom tooth.

One-tooth swelling deserves attention sooner. A single inflamed site is more often an infection than a hygiene problem.

What to do at home right now

Warm salt water rinse. Half a teaspoon in a cup of warm water, two or three times a day. Cheap and genuinely effective at calming tissue.

Floss the area gently. If it bleeds a little, that is the inflammation, not damage. Bleeding usually decreases over several days of consistent flossing.

Soft brush, light pressure. Scrubbing harder makes swollen gums worse.

Cold compress on the cheek, ten minutes at a time.

Do not put aspirin directly on the gum. It burns the tissue and creates a second problem. And do not mask it with painkillers for a week while the cause keeps working.

When to call us

Same day if you have facial swelling, fever, trouble swallowing or opening your mouth, or severe throbbing pain. Those suggest a spreading infection. Our guide on dental emergencies covers what counts as urgent.

This week if there is a bump on the gum that drains, a bad taste that keeps coming back, a loose tooth, or swelling around one tooth with pain.

At your next opening if the swelling has lasted more than two weeks despite good home care, if your gums bleed every time you brush, or if they are receding.

Two weeks is the honest cutoff. Gums that are still swollen after two weeks of real home care are telling you the cause is mechanical, and no amount of rinsing removes tartar or fixes a cracked tooth.

What happens at the visit

We find the cause before treating anything. That means checking the gum pockets with a small probe, an x-ray if we suspect an abscess or bone loss, and a look at the tooth itself for cracks or a failing restoration.

Trapped debris comes out that day. Tartar comes off with a cleaning or a deep cleaning depending on how far under it sits. An abscess needs the infection addressed at the source, not just antibiotics. A cracked tooth or leaking filling gets repaired.

Most swollen gum cases are straightforward and caught early cost very little to fix. The ones that get expensive are the ones that waited.

Call (352) 717-2177 or book an appointment. Neola Dental serves Minneola, Clermont, Groveland, Winter Garden, and the rest of Lake County, with a bilingual team in English and Spanish.