Why Do Gums Pull Away From Teeth? Understanding Gum Recession and Its Causes

Noticing that your teeth look longer than they once did, or that a strip of tooth surface has become visible at the gumline, can be an unsettling experience. Perhaps you have felt increased sensitivity when drinking something cold, or a friend or family member has mentioned that your gums appear to have changed. Whatever prompted you to search, you are not alone — many people notice changes to their gums and are unsure whether they represent something serious or simply part of how teeth age.

This article explores why gums pull away from teeth, what factors may contribute to that process, and what it means for your long-term oral health. It is intended as educational guidance, not a substitute for professional dental assessment.

Gum recession — clinically referred to as gingival recession — describes the process by which the gum tissue surrounding a tooth gradually moves away from the tooth crown, leaving part of the root surface exposed. The gum margin, which in a healthy mouth sits snugly around the base of each tooth crown, effectively retreats over time.

This exposure matters for several reasons. The root surface is not covered by enamel — the hard, protective outer layer that shields the visible crown of the tooth. Instead, it is covered by a softer tissue called cementum, which is considerably less resistant to acid and bacterial attack. Exposed root surfaces can become more sensitive, are more vulnerable to decay, and may affect the appearance of a smile.

It is worth understanding from the outset that gum recession and gum disease, while often related, are not the same thing. Recession describes a physical change in the position of the gum margin. Gum disease — encompassing gingivitis and periodontitis — refers to inflammatory conditions driven by bacterial plaque. The two can coexist, and gum disease is one of the recognised causes of recession. However, recession can also occur in the absence of active infection.

Gum recession rarely has a single, simple cause. In most cases, one or more contributing factors are at work over months or years. Understanding those factors is the first step towards addressing them appropriately.

Periodontal disease is one of the most significant recognised contributors to gum recession. It begins as gingivitis — an inflammation of the gum tissue driven by plaque accumulation — and can progress to periodontitis, a deeper infection that affects the supporting structures of the teeth, including the bone and periodontal ligament.

As the inflammatory process advances in periodontitis, it can cause the gradual loss of the supporting bone and tissue that anchors the gum in its correct position. Over time, this attachment loss can lead to the gum margin retreating and root surfaces becoming exposed. Current NHS and NICE guidance consistently identifies untreated gum disease as a significant risk factor for progressive tissue loss and tooth loss over time.

Importantly, periodontal disease can progress with relatively mild symptoms in some individuals, which is one reason why regular dental examinations are recommended even when no obvious problems are apparent.

One of the more common questions people ask is whether their brushing habits could be contributing to their receding gums. The short answer is: yes, in some cases they can.

Brushing with excessive force, using a hard-bristled toothbrush, or applying an aggressive scrubbing motion can, over time, cause physical abrasion to both the gum tissue and the tooth surface. This type of trauma is sometimes referred to as toothbrush abrasion. The damage accumulates gradually and is often noticed only once recession has become visible.

This does not mean that brushing is harmful — quite the opposite. Consistent, thorough brushing with an appropriate technique is fundamental to oral health. What matters is using a soft or medium-bristled toothbrush, applying gentle circular or modified Bass technique motions, and allowing the bristles to do the work rather than using force. Many dental professionals recommend electric toothbrushes with pressure sensors for patients who habitually brush too firmly.

Not everyone's gum tissue is the same. The thickness and quality of the gingival tissues vary between individuals and can influence susceptibility to recession. Some people have naturally thin, delicate gum tissue — referred to clinically as a thin gingival biotype — which may be more prone to receding in response to inflammation, mechanical pressure or other stressors.

Similarly, the position of a tooth within the jaw can matter. Teeth that are positioned further forward than their neighbours, or that are rotated, may have thinner overlying bone and gum coverage, making that area more susceptible to recession over time.

Bruxism — the habitual grinding or clenching of teeth, often during sleep — is associated with a range of dental problems, and it may contribute to gum recession in some individuals. The excessive forces generated by grinding are thought to create stress within the supporting structures of the teeth. While the precise relationship between bruxism and recession is not fully established in all cases, it is a recognised clinical consideration, particularly when recession is occurring in younger patients without obvious other causes.

Moving teeth through orthodontic treatment can, in some circumstances, cause the gum tissue to behave differently. If a tooth is moved beyond the boundary of its supporting bone, the overlying gum tissue may thin or recede. This is not universal, and orthodontic treatment — when planned carefully — does not necessarily lead to recession. However, it is a factor that clinicians consider as part of orthodontic assessment, particularly in adult patients.

There is evidence that hormonal fluctuations — such as those occurring during pregnancy, puberty or the menopause — can affect the gum tissues' response to plaque and inflammation. Some individuals find their gums are temporarily more reactive during these periods. While this does not directly cause recession, inflammation that is not properly managed may contribute to tissue changes over time.

Tobacco use is well-established as a significant risk factor for periodontal disease and impaired gum healing. Smoking can mask the visible signs of gum inflammation — smokers may bleed less from their gums despite having active disease — which can delay diagnosis. Over time, the cumulative effects of tobacco on periodontal health can contribute to tissue loss and recession.

Because gum disease and gum recession are closely related, they are often conflated. It is worth being clear about how they differ.

Gum disease is an inflammatory condition caused primarily by bacterial plaque. Gingivitis — its milder form — causes redness, swelling and bleeding of the gums. Periodontitis is the more advanced stage, involving loss of the bone and connective tissue that support the teeth. Gum disease is driven by infection and inflammation.

Gum recession is a physical change in the position of the gum margin — the point where the gum meets the tooth. While gum disease is a common driver of recession, recession can also occur due to mechanical factors (such as toothbrush trauma), anatomical variation or other causes, without active infection being present.

Understanding this distinction matters because the appropriate professional response depends on what is actually driving the recession in a given individual.

Gum recession often develops gradually and without pain, which makes early recognition more difficult. Some of the common signs and changes people notice include:

• Teeth that appear longer than they used to

• A visible notch or line near the gumline where the tooth surface changes texture

• Increased sensitivity to hot, cold, sweet or acidic foods and drinks

• A feeling that the gumline has shifted position

• Exposed yellowish or darker-toned root surface near the base of a tooth

• Occasional discomfort when brushing near the gumline

Tooth sensitivity is a particularly common experience associated with recession, because the exposed root surface contains microscopic channels — called dentinal tubules — that transmit temperature and pressure signals more readily than enamel-covered surfaces do. Sensitivity alone does not confirm recession, but if it accompanies visible changes at the gumline, professional assessment is advisable.

This is one of the questions most commonly asked by people researching gum recession, and it is important to answer it honestly.

Gum tissue that has genuinely receded — where the gum margin has moved away from its previous position — does not regenerate on its own. Unlike some body tissues, the gum tissue and supporting bone do not spontaneously regrow once they have been lost. This is why early identification and management of the contributing factors is so important: addressing the causes may slow or halt further recession, even if it cannot reverse what has already occurred.

That said, apparent changes in gum appearance are not always true recession. Swollen, inflamed gum tissue caused by gingivitis can look puffy and then shrink back towards a healthier position once inflammation is controlled — and this may occasionally give the impression that gums are receding when they are in fact becoming healthier. A dental professional can distinguish between these situations.

For cases involving more significant tissue loss, there are clinical procedures that may be considered as part of a wider treatment plan. These are assessed individually, and suitability depends on a range of clinical factors. Outcomes vary between individuals, and no general educational resource can predict what may be appropriate for any specific person.

Prevention and slowing of progression are realistic goals for most people with early or mild recession. The following measures are broadly supported by current evidence and NHS oral health guidance:

• Refine your brushing technique. Use a soft-bristled toothbrush and gentle pressure. An electric toothbrush with a built-in pressure sensor can help.

• Brush twice daily and floss or use interdental brushes. Consistent removal of plaque between teeth and at the gumline supports periodontal health.

• Attend regular dental check-ups. Current NHS guidelines recommend attending as often as your dentist advises based on your individual risk. Regular examinations allow early changes to be identified.

• Address teeth grinding. If bruxism is suspected, speak to a dental professional about whether a night guard or other management might be appropriate.

• Stop smoking. There is substantial evidence supporting the benefits of stopping tobacco use for periodontal health.

• Maintain a balanced diet. A diet low in free sugars supports oral health broadly and reduces the risk of conditions that can affect gum tissue.

• Follow professional advice on gum care. If a hygienist or dentist has made specific recommendations, these are generally tailored to your individual circumstances.

If you have noticed changes to the appearance of your gums, persistent tooth sensitivity, or teeth that appear longer than they used to, it is reasonable to raise this with a dental professional at your next appointment — or to arrange an assessment if you are overdue for a check-up.

You do not need to wait for pain before seeking advice. Gum recession tends to be progressive if its underlying causes are not addressed, and earlier identification of contributing factors generally offers more options for management.

At Wimpole Dental, our team takes a thorough, patient-centred approach to periodontal health assessment, discussing your individual situation carefully before making any recommendations.

If you have questions about the health of your gums or want to understand more about your own periodontal health, the most valuable step you can take is speaking with a qualified dental professional who can assess your individual situation. General information — however thorough — cannot replicate a clinical examination.

At Wimpole Dental, we welcome patients who have questions about their gum health, want a second opinion, or are simply overdue for a check-up and want to start with a comprehensive assessment. Our approach is calm, thorough and built around your long-term oral health rather than any single appointment.

This article is provided for educational and general informational purposes only. The content is intended to support your understanding of gum recession and related oral health topics, and does not constitute professional dental advice, diagnosis or a personalised treatment recommendation. Individual symptoms, clinical presentations and suitable management options vary significantly between patients and require assessment by a qualified dental professional. If you are concerned about changes to your gums, tooth sensitivity or any aspect of your oral health, please seek advice from a registered dental practitioner. No clinical outcomes are implied or guaranteed by the information contained in this article.

Written Date: 22 October 2026 Next Review Date: 22 October 2027