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Illustration showing receding gums and exposed tooth roots that can make teeth look longer

Why Do My Teeth Look Longer Than Before? Causes of Gum Recession

Have you noticed that your teeth look longer than they used to? Perhaps your gums appear lower around certain teeth, you can see a yellowish area near the gumline, or your teeth have suddenly become more sensitive to cold drinks and brushing.

Teeth that look longer than before may signal gum recession. This happens when the gum tissue moves away from the tooth, exposing more of its surface, including the root.

Gum recession can develop gradually and may not cause pain early on. However, exposed tooth roots can become sensitive and are more vulnerable to decay. Identifying the cause early can help protect your gums and prevent further damage.

In this guide, Family Oak Dental explains why teeth may look longer, common causes of receding gums, symptoms to watch for, available treatment options, and when to visit a dentist in Stoney Creek or Hamilton.

Why Do My Teeth Look Longer Than Before?

Your teeth may look longer because your gums have receded, exposing more of the tooth root. This changes the visible gumline and can make one or more teeth appear taller than before.

Gum recession, also called gingival recession, occurs when the edge of the gum tissue moves away from the crown of the tooth. As the tissue pulls back, more of the root surface becomes visible.

Unlike the crown, which is covered by hard enamel, the root is covered by cementum. This surface is less resistant to wear and decay, which is why exposed roots can become sensitive.

You may notice:

  • One tooth looking longer than the teeth beside it.
  • A visible yellowish or darker area near the gumline.
  • A small notch or indentation where the tooth meets the gum.
  • Increased sensitivity when eating or drinking something cold.
  • Uneven gumlines around your front teeth.

Not every change in tooth appearance is caused by gum recession. Tooth wear, changes in tooth position, and other dental conditions can also affect how your smile looks. A dental examination can help identify the actual cause.

What Causes Gum Recession?

Gum recession can develop due to periodontal disease, aggressive brushing, thin gum tissue, tooth position, tobacco use, or trauma to the gums. More than one factor may contribute to the same area of recession.

Here are some common causes.

1. Gum Disease (Periodontal Disease)

Periodontal disease is an important cause of gum and bone damage around teeth.

It begins when plaque accumulates along the gumline. Bacteria in plaque trigger inflammation, which can cause the gums to become red, swollen, and bleed easily.

If gum disease progresses into periodontitis, the tissues and bone supporting the teeth can be damaged. This may cause gum recession, deeper periodontal pockets, and eventually loose teeth.

Warning signs include:

  • Bleeding when brushing or flossing.
  • Red, swollen, or tender gums.
  • Persistent bad breath.
  • Pus around the gums.
  • Teeth that feel loose or change position.

Gum disease can progress without obvious pain. If you notice these symptoms, arrange a dental assessment.

2. Brushing Too Hard

Brushing aggressively can traumatise the gum tissue, especially when you use a hard-bristled toothbrush or apply excessive pressure.

Repeated scrubbing may contribute to gum damage and tooth surface wear near the gumline.

To protect your gums:

  • Use a soft-bristled toothbrush.
  • Apply gentle pressure while brushing.
  • Use small, controlled movements instead of aggressive back-and-forth scrubbing.
  • Brush twice daily with fluoride toothpaste.

Proper brushing should clean your teeth without causing discomfort or damaging your gums.

3. Genetics and Thin Gum Tissue

Some people naturally have thinner gum tissue or a thinner supporting structure around certain teeth.

This can make the gumline more vulnerable to recession, even when someone maintains a consistent oral hygiene routine.

A family history of gum problems may also indicate a greater susceptibility to periodontal disease.

If you have naturally thin gums, your dentist can monitor the gumline and recommend preventive care based on your individual risk.

4. Smoking and Tobacco Use

Smoking and other forms of tobacco use increase the risk of periodontal disease and can make gum health more difficult to maintain.

Tobacco affects the tissues involved in healing and can influence the body’s response to infection.

Quitting tobacco is an important step toward protecting your gums and supporting long-term oral health.

5. Crooked Teeth and Tooth Position

Teeth that sit outside their normal position in the dental arch may have thinner gum and bone coverage in certain areas.

Crowding, tilted teeth, and some orthodontic movements can be associated with an increased risk of gum recession, particularly in people with thin gum tissue.

If tooth position is contributing to the problem, your dentist may recommend an orthodontic assessment.

6. Dental Trauma and Oral Piercings

Physical injury to the gums can contribute to localised recession.

Examples include:

  • Accidental injury to the gum tissue.
  • Lip or tongue piercings that repeatedly rub against the gums.
  • Poorly fitting dental appliances.
  • Repeated mechanical irritation around a tooth.

If an object or appliance is rubbing against your gums, ask your dentist to assess the affected area.

7. Hormonal Changes and Medical Conditions

Hormonal changes during pregnancy, puberty, and menopause can affect how gum tissues respond to plaque and inflammation.

Certain medical conditions, including diabetes, can also increase the risk of periodontal disease.

These factors do not automatically mean that gum recession will develop. However, maintaining good oral hygiene and attending regular dental examinations becomes especially important when your risk of gum disease is higher.

What Are the Signs and Symptoms of Receding Gums?

The most noticeable symptom of gum recession is a change in the gumline that makes your teeth look longer. Other symptoms can include exposed roots, sensitivity, visible indentations, and signs of gum inflammation.

Look for these warning signs:

  • Teeth that appear longer than before.
  • Uneven gumlines around neighbouring teeth.
  • Yellowish or darker areas near the roots.
  • Sensitivity to hot, cold, sweet, or acidic foods.
  • Discomfort when brushing near the gumline.
  • Small grooves or notches near the base of the teeth.
  • Red, swollen, or bleeding gums.
  • Persistent bad breath.
  • Teeth that feel loose or shift position.

Gum recession does not always cause pain. You may have noticeable changes in your gumline without experiencing sensitivity.

That is why a dental examination is important, even when the affected area does not hurt.

Is Gum Recession Dangerous If Left Untreated?

Gum recession can affect your oral health because exposed tooth roots are more vulnerable to sensitivity, root decay, and damage. If periodontal disease is also present, ongoing damage to the supporting tissues and bone can eventually affect tooth stability.

Possible complications include:

Tooth Sensitivity

Exposed root surfaces do not have the same protective enamel covering as the crowns of your teeth. This can make them more sensitive to cold drinks, hot foods, sweets, and brushing.

Root Cavities

The exposed root surface is more vulnerable to decay than enamel. Plaque and bacteria can contribute to cavities near the gumline or on exposed roots.

Changes in Your Smile

Receding gums can create uneven gumlines and make teeth look longer. This may affect the appearance of your smile.

Gum and Bone Damage

When recession is associated with periodontitis, the disease can damage the supporting tissues and bone around teeth. Advanced periodontal damage may cause teeth to become loose.

Early assessment helps identify the underlying problem before it becomes more difficult to manage.

Can Receding Gums Grow Back Naturally?

No. Gum tissue that has receded does not normally grow back on its own. However, treatment can help control the underlying cause, protect exposed roots, and in selected cases restore gum coverage through surgical procedures.

The right approach depends on how much recession is present, whether gum disease is active, the condition of the supporting bone, and your overall oral health.

Even when the original gumline cannot be restored naturally, preventive care can help reduce the risk of further recession.

What Is the Best Treatment for Gum Recession?

Gum recession treatment depends on its cause, severity, and effect on your oral health. Options may include improved brushing techniques, periodontal treatment, fluoride protection, dental bonding, or gum graft surgery.

A dentist or periodontist will assess your gums before recommending treatment.

1. Improve Your Brushing Technique

If aggressive brushing is contributing to recession, changing your technique can help prevent additional mechanical irritation.

Use a soft-bristled toothbrush, gentle pressure, and fluoride toothpaste. Your dental professional can demonstrate an appropriate brushing method.

Changing your brushing technique will not replace gum tissue that has already been lost, but it can help protect the remaining gum tissue.

2. Scaling and Root Planing (Deep Cleaning)

If periodontal disease is responsible for the gum damage, your dentist may recommend scaling and root planing.

This deep-cleaning procedure removes plaque and hardened tartar from tooth and root surfaces below the gumline.

It helps reduce the bacterial deposits associated with periodontal inflammation and supports better gum health.

Not every patient with gum recession needs deep cleaning. The procedure is recommended when the dental examination identifies periodontal disease that requires this treatment.

3. Fluoride and Desensitising Treatments

Exposed roots can become sensitive because they lack the protective enamel covering found on the crown.

Your dentist may recommend:

  • Desensitising toothpaste.
  • Professional fluoride varnish.
  • Other products designed to reduce sensitivity.
  • A preventive plan to lower the risk of root cavities.

These treatments can help protect exposed root surfaces and improve comfort, but they do not rebuild missing gum tissue.

4. Dental Bonding

Dental bonding uses tooth-coloured composite resin to cover certain exposed root areas.

It may help:

  • Improve the appearance of the affected tooth.
  • Cover exposed root surfaces.
  • Reduce discomfort in selected cases.

Bonding does not restore the original gum tissue. Your dentist will determine whether it is appropriate based on the location and condition of the affected tooth.

5. Gum Graft Surgery

Gum graft surgery may be recommended for certain moderate or advanced cases of gum recession.

During the procedure, a periodontist places tissue over the exposed root area. The tissue may come from the roof of your mouth or an appropriate donor source.

Potential benefits include:

  • Covering exposed tooth roots.
  • Increasing gum tissue thickness.
  • Reducing sensitivity in suitable cases.
  • Improving the appearance of the gumline.
  • Helping protect vulnerable root surfaces.

Not every patient needs a gum graft. The decision depends on the type of recession, tissue condition, periodontal health, and treatment goals.

6. Orthodontic Treatment

When tooth position contributes to gum recession, an orthodontic assessment may be helpful.

In selected cases, correcting tooth alignment can improve the position of teeth within the dental arch. However, orthodontic treatment is not suitable for every recession case and must be planned carefully when gum tissue is thin.

How Can You Prevent Gum Recession From Getting Worse?

You can reduce the risk of further gum recession by brushing gently, cleaning between your teeth daily, avoiding tobacco, and following your dentist’s preventive care recommendations.

Try these practical habits:

  1. Brush twice daily: Use a soft-bristled toothbrush and fluoride toothpaste.
  2. Clean between your teeth: Floss or use an appropriate interdental cleaner every day.
  3. Avoid aggressive brushing: Do not scrub your teeth or press too hard against the gums.
  4. Attend regular dental checkups: Your dentist can monitor changes in your gumline and identify early signs of periodontal disease.
  5. Avoid smoking and tobacco: Reducing tobacco exposure supports better gum health.
  6. Manage underlying health conditions: Follow your healthcare professional’s recommendations, particularly if you have diabetes.
  7. Follow professional cleaning recommendations: Some patients need more frequent periodontal maintenance than others.

Prevention is particularly important if you already have exposed roots or a history of gum disease.

When Should You See a Dentist About Receding Gums?

You should arrange a dental examination when you notice teeth looking longer, exposed roots, new sensitivity, or bleeding gums. Early assessment helps identify whether the problem is related to gum disease, brushing trauma, tooth position, or another cause.

Seek dental advice promptly if you notice:

  • Gums that bleed repeatedly when brushing or flossing.
  • Increasing tooth sensitivity.
  • Swelling or tenderness around the gums.
  • Persistent bad breath or a bad taste.
  • Pus around the teeth or gums.
  • Teeth that feel loose or are shifting.

Your dentist may examine the gumline, measure periodontal pocket depths, check your bite, and recommend dental X-rays when needed to evaluate supporting bone.

If advanced periodontal treatment or gum graft surgery is appropriate, a referral to a periodontist may be recommended.

Frequently Asked Questions

Why do my teeth look longer but don’t hurt?

Your teeth may look longer because the gum tissue has moved away from the tooth, exposing more of its surface. Gum recession can develop without pain, especially early on. Even painless changes should be checked by a dentist.

Can receding gums be fixed without surgery?

Yes, some cases can be managed without surgery. Treatment may include improving brushing habits, treating periodontal disease, using fluoride or desensitising products, and dental bonding. However, these options do not replace missing gum tissue. Some cases may require gum graft surgery.

Does gum recession always mean gum disease?

No. Periodontal disease is one important cause, but recession can also be associated with aggressive brushing, thin gum tissue, tooth position, and physical trauma. A dental examination is needed to determine the cause.

How quickly does gum recession progress?

The rate varies. Some cases develop gradually over months or years, while others may change more quickly when active periodontal disease or ongoing tissue trauma is present. Regular dental examinations can help monitor changes.

Is gum recession a normal part of ageing?

Gum recession becomes more common with age, but it should not automatically be considered an unavoidable part of getting older. Gum disease, brushing habits, tobacco use, and individual tissue characteristics can all influence gum health.

What is the difference between gum recession and gum disease?

Gum recession describes the movement of the gumline away from the tooth, exposing more of the root. Gum disease is an inflammatory condition affecting the tissues that support teeth. Periodontal disease can cause recession, but not all gum recession is caused by gum disease.

Can gum recession cause tooth loss?

Gum recession alone does not always lead to tooth loss. However, when it is associated with advanced periodontitis and supporting bone damage, teeth can become loose and may eventually be lost without appropriate treatment.

Concerned About Receding Gums? Visit Family Oak Dental in Stoney Creek

If your teeth look longer than before, your gums appear uneven, or you have noticed sensitivity near the gumline, a dental examination can help identify what is happening.

At Family Oak Dental, we provide dental hygiene care and assess gum health for patients in Stoney Creek and the surrounding Hamilton area. Our team can evaluate your oral health, discuss preventive care, and help determine whether further periodontal assessment is needed.

Depending on your condition, treatment may involve professional cleaning, scaling and root planing, fluoride protection, or referral to a periodontal specialist.

If you are concerned about receding gums, you can book a dental appointment with Family Oak Dental to discuss your concerns.

Learn more about our dental hygiene care in Stoney Creek, including routine cleanings, scaling and root planing, and preventive care.

Book a dental assessment and take the next step toward healthier gums and a more confident smile.

Disclaimer: This article is for general educational purposes only and does not replace professional dental advice, diagnosis, or treatment. Consult a licensed dental professional for an assessment and personalised treatment recommendations.

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