Gingival Hyperplasia (Gums Growing Over Teeth)

Gingival hyperplasia, commonly described as gum growing over a tooth, occurs when gum tissue expands beyond its normal boundaries, sometimes covering part or all of the tooth’s surface. Noticing that kind of change can feel alarming, but effective treatments exist at every level of severity.

Signs of Gum Overgrowth

The most visible sign of gingival hyperplasia is swollen gum tissue that creeps over part of a tooth, making it look shorter than normal. In many cases, the tissue becomes inflamed, turning red, feeling tender, and bleeding easily during brushing or flossing. When gum tissue grows over a tooth, you may notice these specific changes:

• Redness and bleeding - Gums appear dark pink or red and bleed when you brush or floss.
• Swelling and tenderness - Tissue feels puffy, soft, or sensitive to the touch.
• Persistent bad breath - Excess tissue traps bacteria and plaque along the gumline.
• Difficulty with hygiene - Overgrown gums create tight spaces that make thorough cleaning harder.
• Tooth displacement - In advanced cases, pressure from excess tissue can push teeth out of alignment. Not all gum overgrowth causes inflammation. Some people notice firm, pink or normal-colored tissue that bleeds less readily. If gum tissue has completely covered the crown of a tooth, that’s a clear signal to schedule a dental visit without delay.

What Causes Gingival Hyperplasia?

Several conditions can cause gum tissue to grow over a tooth, ranging from medications and hormonal shifts to inherited traits and systemic diseases. Identifying the underlying cause is the first step toward the most effective treatment.

Medications

Drug-induced gum overgrowth is the most common type, linked most strongly to three drug classes. Your risk is higher if you already have gum inflammation, hardened plaque deposits, or a genetic predisposition to the condition. Three drug classes most strongly associated with gum overgrowth are:

• Seizure medications (anticonvulsants) - Phenytoin is the most frequently studied and cited drug in this category.
• Immunosuppressants - Cyclosporine, used to prevent organ rejection after transplant, is a well-documented cause.
• Blood pressure medications (calcium channel blockers) - Nifedipine and amlodipine are the most commonly involved drugs in this class. If any of these medications have been prescribed to you, let both your prescribing doctor and your dentist know so they can monitor your gum health closely.

Hormonal Changes

Hormonal surges during puberty and pregnancy increase inflammation throughout the body, including in the gums. This heightened response makes gum tissue more susceptible to swelling and overgrowth, especially when plaque is present. In many cases, gum changes linked to hormonal shifts improve once levels stabilize, but consistent oral hygiene throughout the process is essential.

Genetic Factors

A rare inherited condition called hereditary gingival fibromatosis causes the gums to produce excess collagen, leading to significant overgrowth that may begin in childhood or adolescence. Unlike medication-related or inflammation-driven causes, this type isn’t triggered by external factors, and it typically requires surgical treatment to manage.

Systemic Conditions

Certain systemic diseases can also trigger gum overgrowth, including vitamin C deficiency, and conditions such as Crohn’s disease and sarcoidosis. In rare cases, rapid gum swelling alongside symptoms like unexplained fatigue, bruising, or frequent infections can signal a blood cancer called acute leukemia. If your gum changes appear suddenly alongside any of those symptoms, seek evaluation promptly rather than waiting for a routine appointment.

How Do Dentists Diagnose Gingival Hyperplasia?

Your dentist starts with a full medical and medication history review. Drug-induced overgrowth is the most common type, so being upfront about every prescription and supplement you take, including recent changes, helps narrow down the cause quickly. From there, your dentist may proceed with the following:

• Using a thin probe to measure the depth of the space between your gum and tooth.
• Checking for bone loss with dental X-rays and looking for signs of other conditions that could be contributing.
• Sending a small tissue sample to a lab if the cause is unclear or if cancer must be ruled out In most cases, X-rays and measuring the space between your gum and tooth are enough to reach a working diagnosis. If your case is moderate to severe or involves underlying periodontal disease, your dentist may refer you to a periodontist, a specialist who treats conditions that affect the gums and the structures that support your teeth.

How Does Gum Overgrowth Cause Gum Disease?

Overgrown gum tissue creates pockets that trap plaque and bacteria along the gumline. Those pockets are difficult to clean, and over time, the chronic inflammation they cause can progress to periodontitis. The early stages of gum disease are difficult to notice because they cause little or no pain. By the time symptoms become obvious, some damage may already have occurred. Watch for these warning signs, especially if you have known gum overgrowth:

• Persistent bad breath - Bacteria trapped in gum pockets produce odor that brushing alone won’t eliminate.
• Bleeding that doesn’t stop - Gums that bleed easily during cleaning signal active inflammation.
• Receding gums - Tissue pulling away from the tooth makes roots more visible and more vulnerable.
• Loose teeth - Advanced bone loss can cause teeth to shift or feel unstable. Treating gum overgrowth directly also reduces the pockets where bacteria accumulate, helping protect you against more severe gum disease down the line.

Treatment for Gingival Hyperplasia

Treatment depends on how severe the overgrowth is and what’s causing it. Fortunately, effective options exist at every level, from non-surgical care to minor procedures. Knowing what each involves can help you have a more informed conversation with your dentist.

Professional Treatment Options

Non-surgical management is always the starting point. Your dentist will work with your prescribing physician to explore switching or reducing a causative medication when that’s medically feasible. A deep cleaning called scaling and root planing removes bacteria, hardened plaque, and calculus from above and below the gumline, reducing the inflammation that drives overgrowth. When those steps aren’t enough, the following procedures become appropriate:

• Gingivectomy - Excess gum tissue is removed, and the gumline is reshaped under local anesthetic.
• Periodontal flap surgery - The gum is gently folded back to allow deeper cleaning and removal of inflamed tissue.
• Laser excision - A dental laser removes overgrown tissue with minimal bleeding and a fast healing period.
• Prescription antiseptic rinse - A rinse containing chlorhexidine helps control bacterial load before and after procedures.
• Antibiotic therapy - Azithromycin, in particular, has shown the ability to reduce overgrowth in patients taking cyclosporine, sometimes avoiding the need for more invasive treatment. Recurrence is common, especially in patients who remain on the causative medication, so post-surgical maintenance appointments are a core part of the plan.

Home Care Options

Consistent daily hygiene is your most direct tool for slowing or preventing overgrowth. Here are some tips to help with the condition:

• Brush twice a day - Electric brushes tend to reduce plaque more effectively while applying less physical pressure on inflamed tissue.
• Floss daily - Consider adding an interdental brush or water flosser to clean the tight spaces around enlarged gum tissue that standard floss can’t always reach.
• Use a dentist-recommended fluoride toothpaste - This, along with a daily antiseptic rinse, rounds out an effective home routine. Aside from these home care tips, consider getting professional cleanings every three to four months, rather than the standard six. This is especially important if you’re on a medication known to cause overgrowth.

How to Prevent Gum Overgrowth Recurrence

If your medication is stopped or changed, mild inflammatory overgrowth often begins to resolve within 4 to 8 weeks with improved plaque control and non-surgical care. More fibrotic or advanced cases can take up to six months to show full regression, and some degree of tissue thickening may remain even after the drug is discontinued. For patients who stay on the causative medication, recurrence after surgery is likely, sometimes within months. The best strategy is to keep your plaque levels as low as possible at all times. Talk to your dentist promptly if you notice gum growing over the tooth again after treatment, rather than waiting for your next scheduled visit.

Take the Next Step

If you’ve noticed changes in your gum tissue, getting a professional evaluation is the most useful thing you can do. Your dentist can coordinate with your other providers as needed, and most people find that getting a diagnosis is far less stressful than the uncertainty of waiting.