Skip to content

The 4 Stages of Gum Disease: Signs, Symptoms, and Treatment


Dr. Andreas

Dental specialist

Our Doctor

Meet Doctor

passport photo

Written by

Q.F. Nayibe Cubillos Morales


Medically Reviewed by

Dr. Gustavo Assatourians D.D.S

✓ Fact Checked 🕓

❙ Our team of writers, editors, and medical experts rigorously evaluates each article to ensure the information is accurate and exclusively cites reputable sources.

❙ We regularly assess how the content in this article aligns with current scientific literature and expert recommendations in order to provide the most up-to-date research.

Did you know that gums can also become diseased? Much is said about the importance of dental hygiene to prevent cavities, but little is heard about the stages of gum disease. The truth is that oral health not only involves having shiny, cavity-free teeth but also maintaining healthy gums. When gums become diseased, there are progressive alterations that occur in various stages.


What are Gum Diseases? 

Teeth have a visible part (the crown) and an unseen part (the root). The roots of the teeth are submerged in areas of the upper and lower jawbones called alveolar ridges. These ridges are covered by a soft, pink tissue called gums. When gums become diseased and inflamed, the tissues that support the tooth are generally affected, which can lead to various problems, including tooth loss.


What causes Gum Disease?

Although several factors can contribute to the development of gum disease, the main cause of it is bacterial plaque, both soft and calcified.

Dental Plaque: What You Need to Know

Dental plaque is a layer of food and organized bacteria that adheres to teeth and remains there for an extended period. When the body detects dirt on the dental surface, it initiates a defense mechanism against bacteria, causing inflammation of the gums. There are two types of dental plaque:

• Soft plaque: This is plaque that has recently formed and can be removed with a toothbrush and dental floss.

Calcified plaque or tartar: When soft plaque is not removed for a long time, it acquires minerals from the environment and hardens. This plaque firmly adheres to teeth, and specialized dental instruments and equipment are required to remove it.

The accumulation of dental plaque can be facilitated by various factors, including:

 Poor oral hygiene: When plaque is not removed from all dental surfaces.

 Dental crowding: When teeth are too close together or crooked, oral hygiene becomes difficult.

 Salivary problems: Saliva helps clean teeth, but if it is insufficient, plaque accumulation is favored.

stages of gumd disease

Other causes of gum disease:

Although dental plaque is the primary factor in developing gum disease, it is not the only one. Other factors that can cause gum disease are listed below:

• Hormonal changes: States that involve hormonal changes such as menopause, puberty, pregnancy, or menstruation can make gums more susceptible to inflammation.

• Smoking: Cigarettes contain nicotine, which decreases blood circulation in the gums, negatively affecting tissue response to infections.

• Consumption of certain medications: Many studies have described how medications can affect oral health, as some decrease saliva flow, which under normal conditions has a protective effect on teeth and gums. Others can cause abnormal growth of gum tissue, such as phenytoin.

• Immune system diseases: Many pathologies can affect the immune system, including lupus, cancer, HIV infection, arthritis, and/or diabetes, among others. A deteriorated or overly active immune system does not respond adequately to infections, causing gums to deteriorate more rapidly.

• Genetic predisposition: Patients with a family history of gum disease are more likely to suffer from this condition.

• Advanced age: Deterioration of the immune system, motor difficulties, and dental loss can be factors that increase the risk of gum disease in older adults.

• Dental loss: When teeth are lost, spaces are left where plaque accumulates more easily, causing damage to the gum and bone that support adjacent teeth. Additionally, when the number of teeth decreases, those that remain must bear the entire load of chewing, weakening and affecting the bone and gum that support them.

• Bruxism: Some people clench their teeth, overloading supporting tissues, which can cause or worsen gum disease.


What are Gingival Recessions?  

When gums recede and expose part of the roots of the teeth, dentists refer to this as gingival recessions. They can happen as a result of gingival inflammation that was not addressed in time or due to other factors, such as horizontal tooth brushing or bruxism. Gingival recessions are an alarming sign, as they represent a loss of tooth support. They can also cause dental sensitivity since they leave the dental roots exposed to stimuli such as cold and heat.


Stages of gum disease

Gum disease has two main stages: gingivitis and periodontitis. Depending on their severity, periodontitis can be mild, moderate, or severe. Below are the signs and symptoms of each stage:


It is the initial phase of gum disease. It presents as an inflammation limited to the gums, where there is still no loss of tooth support. It is characterized by:

• Gingival bleeding

• Red and swollen gums

• Mild sensitivity.


Periodontitis is a gum disease that occurs when gingivitis is not treated in time, causing the infection to spread beneath the gum and into the bone. In such cases, the gums “separate” from the teeth, forming spaces or pockets called periodontal pockets. Bacteria accumulate in these pockets, causing an infection that continues to destroy the gum and bone. When this happens, there is a loss of dental attachment.

gum disease

Depending on its severity, periodontitis can be classified into four stages:

Stage 1 (Mild periodontitis):

 Loss of dental attachment

 Periodontal pockets are shallow, between 1 and 2 mm.

 Mild gum recession

 Teeth have a slight degree of mobility

Stage 2 (Moderate periodontitis):

 Moderate loss of dental attachment

 Teeth may be mobile

 Moderate gum recession

 There may be pain and discomfort

 Gums recede, exposing the roots of the teeth and causing them to loosen.

Stage 3 (Severe periodontitis):

 Considerable loss of bone and gum tissue that support the tooth

 Advanced tooth mobility that may lead to tooth loss

 Severe gum recession

There may be pain, abscesses, or pus drainage.

Stage 4 (Very severe periodontitis):

 More than 4 teeth have already been lost due to periodontitis

 Severe tooth mobility in several teeth

 Severe gum recession

There may be pain, abscesses, or pus drainage.


Treatment of Gum Disease

Depending on the diagnosis and stage of gum disease, there are several treatment options available that can stop its progression and prevent tooth loss. Typically, treatments focus on deep cleanings to remove plaque bacteria, control inflammation, and disinfect periodontal pockets, which aids in tissue healing and helps the gum reattach to the tooth. Similarly, when too much attachment has already been lost, there are treatments available that can help restore support to the tooth through the use of grafts.



1. La Gingivitis. (s. f.).

2. Factores de riesgo de la enfermedad de las encías. (7 de febrero de 2020). Academia Americana de Periodoncia.

3. Prevención de la enfermedad de las encías. (8 de febrero de 2020). Academia Americana de Periodoncia.

4. Enfermedad de las encías y otras enfermedades. (21 de junio de 2019). Academia Americana de Periodoncia.

5. Tratamientos no quirúrgicos. (21 jun, 2019). Academia Americana de Periodoncia.

6. Síntomas y tratamientos de la enfermedad de las encías. (s. f.).

7. Enfermedades periodontales. (s. f.). Johns Hopkins Medicine.

8. Troncoso, C. M., Castillo-Ruiz, M., Daille, L. K., Fuentevilla, I. A., & Bittner, M. (2010). Co-detección de patógenos periodontales en pacientes chilenos con periodontitis crónica. Revista clínica de periodoncia, implantología y rehabilitación oral, 3(3), 118-122.

9. Papapanou, P. N., Sanz, M., Buduneli, N., Dietrich, T., Feres, M., Fine, D. H., Flemmig, T. F., Garcia, R., Giannobile, W. V., Graziani, F., Greenwell, H., Herrera, D., Kao, R. T., Kebschull, M., Kinane, D. F., Kirkwood, K. L., Kocher, T., Kornman, K. S., Kumar, P. S., . . . Tonetti, M. S. (2018). Periodontitis: Informe de consenso del grupo de trabajo 2 del Taller mundial de 2017 sobre la clasificación de enfermedades y afecciones periodontales y periimplantarias. Journal of Periodontology, 89, S173-S182.

Dr. Andreas

Dental specialist

Our Doctor

Meet Doctor

Convenient appointment times

Schedule Your Appointment

19 Natural Antibiotics to Ward Off Any Dental Infection

Sign up to receive daily email dentist tips and challenges, as well as our comprehensive Better smile Guidebook.

Our Doctor

Meet Doctor

Dr. Dalton

Dental specialist

19 Natural Antibiotics to Ward Off Any Dental Infection

Sign up to receive daily email dentist tips and challenges, as well as our comprehensive Better smile Guidebook.

Our Doctor

Meet Doctor

Dr. Trinity

Dental specialist