What Is Lurking Under your Gumline?

What is lurking under your gumline? Plaque and bacteria can hide in the small pocket around each tooth, even when your teeth look fine. Here is what happens below the surface, how to clean it properly at home, and how Southern York Smile Care in Shrewsbury, PA checks and treats your gums.

Hello, Shrewsbury! Your oral health depends on more than cavity-free teeth. It also depends on healthy gums. The tricky part is that gum problems often start where you cannot see them, and in the early stages they rarely hurt. That is why it pays to understand what goes on just below the gumline.

The hidden pocket around every tooth

Your gums do not attach right at the top edge. Around each tooth there is a shallow groove, called the sulcus or pocket, between the tooth and the gum. In a healthy mouth it is only a few millimeters deep, and it can be kept clean with good brushing and flossing.

Food particles and bacteria collect in this pocket every day. If they are not cleaned out, the bacteria form plaque, a sticky film that irritates the gums. Over time, plaque hardens into tartar, which only a dental professional can remove.

How gum disease develops

Gum disease usually progresses slowly, in stages:

1. Gingivitis. Plaque at the gumline makes the gums red, puffy and prone to bleeding when you brush or floss. At this stage, the damage can usually be reversed with good home care and a professional cleaning.
2. Periodontitis. If gingivitis is not treated, the gums begin to pull away from the teeth and the pockets get deeper. Bacteria move further down, and the body's response starts to break down the bone and tissue that hold teeth in place.
3. Advanced periodontitis. The pockets become too deep for a toothbrush or floss to reach. Teeth can loosen, shift or even be lost.

Decay can follow too. The root surface below the gumline is softer than enamel and does not resist decay as well as the crown of the tooth. So even if the parts of your teeth you can see are cavity-free, problems can be growing where you cannot see. Our article Gum Disease and Tooth Loss explains more.

Warning signs to watch for

• gums that bleed when you brush or floss
• red, swollen or tender gums
• bad breath or a bad taste that does not go away
• gums that look like they are pulling back from the teeth
• teeth that feel loose or a bite that feels different
• pus between the teeth and gums

If you notice any of these, do not wait for your next checkup. Call the office. Bleeding gums are not normal, even if they do not hurt. Many people stop flossing when their gums bleed, but gentle, daily cleaning is usually what helps them heal. If the bleeding has not settled after a week or two of careful care, it is time for a professional look.

Cleaning below the gumline at home

Brush at the right angle

Hold your toothbrush at a 45-degree angle, with the bristle tips aimed at the gumline. The bristles of a soft brush can then slip just into the pocket on the front and back of each tooth and sweep out food and bacteria. If the brush is held flat against the teeth, the bristles cannot reach the pocket, and bacteria are left behind to form plaque. Use gentle, short strokes. Scrubbing hard can damage the gums. For a full routine, see Are You Brushing Properly?

Floss into the pocket

A toothbrush cannot clean between teeth, so floss once a day. Slide the floss gently between two teeth, curve it into a C shape around one tooth, and ease it carefully down into the pocket between tooth and gum. Then scrape upward to lift food particles and plaque out of the pocket. Repeat on the neighboring tooth before moving on.

If string floss is hard for you, a water flosser or small interdental brushes can work well. Read about water flossing.

Habits that help your gums

• Do not smoke or vape. Tobacco is one of the strongest risk factors for gum disease and slows healing.
• Drink water through the day. Saliva helps wash away bacteria, and a dry mouth lets plaque build up faster.
• Limit sugary snacks and sips. Frequent sugar feeds the bacteria that form plaque.
• Replace your brush. A frayed toothbrush cannot reach into the pocket. Swap it every three to four months.

How your gums are checked at Southern York Smile Care

During exams, the team measures the depth of the pocket around each tooth with a small, gentle probe. Healthy pockets are shallow. Deeper readings, or pockets that bleed, can be early signs of gum disease. Tracking these numbers over time shows whether your gums are getting healthier or need more care.

Other tools help too. Digital X-rays, with up to 90 percent less radiation exposure, show the level of bone around your teeth. An intraoral camera lets you see your own gums on screen. And oral DNA tests can identify the specific bacteria involved in gum disease, so treatment can be targeted.

Cleanings at Southern York Smile Care are a full 60 minutes. That gives time to remove tartar above and below the gumline and to talk with you about any trouble spots. Learn more about dental cleanings and preventive dentistry.

Treating gum disease

If you already have gum disease, treatment can begin right away. Depending on how advanced it is, care may include:

• Deep cleaning. Scaling and root planing remove tartar and bacteria from below the gumline and smooth the root surfaces so the gums can reattach.
• Laser care. The Picasso laser allows gentle treatment of gum tissue.
• Targeted treatment. Oral DNA testing can guide which approach will work best for your bacteria.
• More frequent cleanings. Shorter intervals between visits help keep deep pockets under control.

See our gum disease treatments page for details. Healthy gums matter beyond the mouth too. Research has linked gum disease with other conditions, including heart disease and diabetes. Read Regular Cleanings and Heart Health.

Holistic patients can ask about a whole-body approach to gum care on our holistic dentistry page. Dr. Steven Haywood has more than 35 years in practice and works with patients of all ages to build habits that keep gums healthy for life.

Your next step

If your gums bleed, feel tender, or it has been a while since your last cleaning, find out what is happening below the surface. Call Southern York Smile Care at (717) 235-3871 or request an appointment at 4 S. Main St in Shrewsbury. The practice serves patients from York, southern York County and northern Baltimore County, MD.

About the authorDr. Steven Haywood, DDS

DDS cum laude 1987, US Air Force residency, NYU cosmetic training and Fellow of the International Congress of Oral Implantologists, with 35+ years in practice.

Meet Dr. Haywood →