Vitamin Deficiency & Teeth Discoloration: The Unseen Link

teeth discoloration vitamin deficiency
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The health and appearance of our teeth can be indicative of our overall wellbeing. One cause of teeth discoloration that often goes unnoticed is vitamin deficiency. In this article, we will examine the direct link between certain vitamin deficiencies and teeth discoloration. We will provide information on how to identify, address, and prevent these deficiencies to maintain good dental health. Understanding these connections is important for both dental and overall health.

Symptoms of Vitamin Deficiency

Vitamin deficiencies can display various symptoms, depending on the specific vitamin that’s lacking. A shortage of vitamin B12 can cause fatigue, weakness, and dizziness. Vitamin C deficiency can lead to bleeding gums and joint pain. A lack of vitamin D might result in soft bones, known as osteomalacia in adults or rickets in children. Vitamin A deficiency can cause night blindness and dry skin. Other symptoms include brittle hair and nails, poor wound healing, and a decreased ability to taste and smell. 

Vitamin Deficiencies That Can Affect Teeth Discoloration 

Vitamin B12

Vitamin B12, also known as cobalamin, is essential for many functions in the body, including the health of nerve cells, DNA synthesis, and red blood cell formation. While its deficiency predominantly manifests as fatigue, weakness, constipation, and neurological issues, there are oral implications as well. One of the lesser-known effects of a Vitamin B12 deficiency is its impact on oral health, particularly teeth discoloration. Patients deficient in this vitamin can experience a bluish hue to their gums, which can make their teeth appear more yellow in contrast. Additionally, Vitamin B12 deficiency can result in mouth ulcers, burning sensations in the mouth, or glossitis, where the tongue becomes swollen and inflamed. 

See also: How Long Can You Leave a Cavity Untreated: Risks and Consequences

How to Supplement Vitamin B12 Deficiencies

Dietary sources of Vitamin B12 include meat, fish, poultry, eggs, and dairy. Vegetarians or vegans can obtain B12 from fortified foods like plant-based milk or cereals. If these sources are inadequate, B12 supplements come in pill, sublingual, or liquid forms. For people with absorption problems, such as those with pernicious anemia or specific gastrointestinal disorders, B12 injections can be beneficial. 

Vitamin D

Vitamin D plays a critical role in overall health, including dental health. A deficiency in Vitamin D is associated with teeth discoloration and other oral health issues. This nutrient is necessary for the absorption of calcium, which directly affects tooth structure and health. When Vitamin D levels are insufficient, it can lead to an imbalance of minerals in the teeth, causing discoloration. In children, a significant deficiency can result in improper tooth mineralization, leading to defects in both dentin and enamel. These defects can lead to discoloration and increase the risk of cavities and decay. Adults with low Vitamin D can also experience enamel abnormalities and discoloration.

Worth Knowing

Dental caries is the most prevalent chronic condition worldwide. The Department of Health and Human Services reports that in 2018, dental care expenses in the United States reached almost $136 billion, accounting for 3.7% of the nation’s total healthcare spending.

How to supplement vitamin D deficiencies?

Sun exposure is a natural way to boost vitamin D levels, though its efficacy can vary based on skin tone, age, and geographic location. Dietary sources, including fatty fish like salmon and trout, provide a rich supply of vitamin D. Moreover, fortified foods, such as milk and yogurt, can further enhance your vitamin D intake. For those who might struggle to get enough from natural sources, vitamin D supplements can fill the gap.

Vitamin A

Vitamin A is integral to overall health, with a particular influence on vision, immune function, and skin health. Yet, its role in oral health is equally noteworthy. A deficiency in Vitamin A can have implications for the mouth, including tooth discoloration. Vitamin A aids in the formation of dentin, the hard tissue beneath tooth enamel. A shortage can result in a reduction in dentin, potentially leading to weakened teeth and discoloration. Additionally, vitamin A plays a role in maintaining the salivary tissues that keep the mouth moist and help cleanse the teeth. Reduced salivary function can lead to a buildup of bacteria and food particles, promoting staining. Furthermore, a lack of Vitamin A can compromise the health of the gums and mucous membranes in the mouth, making them more susceptible to bacterial infections, which can also indirectly affect the color and health of the teeth.

How to Supplement Vitamin A Deficiencies?

Increasing Vitamin A intake can be achieved by consuming foods rich in the vitamin. Animal-derived foods like liver, fish oils, milk, and eggs are direct sources of Vitamin A. On the plant side, foods such as carrots, sweet potatoes, spinach, and kale contain beta-carotene, which the body converts into Vitamin A.

For added support, over-the-counter Vitamin A supplements can be found in pharmacies and health food stores in forms like retinol or beta-carotene. Many foods, including certain cereals and dairy products, are also fortified with Vitamin A. For those with severe deficiencies, doctors might prescribe higher doses of Vitamin A through oral capsules.

See also: 19 Facts and Myths about Teeth

Vitamin C

Vitamin C, also known as ascorbic acid, is vital for the health of gums and teeth. A deficiency in vitamin C can lead to several oral health problems, one of which is teeth discoloration. This is due to the integral role vitamin C plays in the formation and maintenance of dentin, the layer beneath the tooth’s enamel. A weakened dentin layer can cause the underlying yellowish layer to show through, leading to a discoloration of the teeth. 

Additionally, a deficiency in vitamin C can result in gum diseases like gingivitis, where the gums may bleed easily and become inflamed. As gums recede due to inflammation, more of the tooth’s root becomes exposed, which is naturally yellower than the crown, leading to an overall appearance of yellow teeth. Furthermore, unhealthy gums might cause tooth movement or loss, both of which can change the appearance of one’s smile.

Life StageRecommended Amount of Vitamin C
Birth to 6 months40 mg
Infants 7-12 months50 mg
Children 1-3 years15 mg
Children 4-8 years25 mg
Children 9-13 years45 mg
Teens 14-18 years (boys)75 mg
Teens 14-18 years (girls)65 mg
Adults (men)90 mg
Adults (women)75 mg
Pregnant teens80 mg
Pregnant women85 mg
Breastfeeding teens115 mg
Breastfeeding women120 mg
Source: National Institute of Oral Health

How to supplement vitamin C deficiencies?

One direct way to increase vitamin C intake is through incorporating more foods rich in this nutrient into the diet. Such foods include citrus fruits, berries, potatoes, tomatoes, peppers, cabbage, brussels sprouts, broccoli, and spinach. Consuming these foods can help improve oral health and prevent teeth discoloration caused by deficiencies.

For those who find it challenging to meet their vitamin C needs through diet alone, over-the-counter vitamin C supplements are readily available in various forms, including tablets, capsules, and effervescent powders. Some foods and beverages also come with added vitamin C to boost their nutritional profile.


Calcium, although not a vitamin, is a crucial mineral for dental health. A calcium deficiency can have adverse effects on the teeth, including discoloration. Teeth are primarily composed of calcium, and this mineral is vital for maintaining the hard enamel surface that covers teeth. When there’s a shortage of calcium, the enamel may thin out, making teeth more susceptible to decay, cavities, and discolored patches. Thinner enamel can also lead to increased translucency of teeth, causing the yellow dentin underneath to become more visible, giving teeth a yellowish or discolored appearance. Additionally, a lack of calcium can weaken the teeth, making them more prone to chipping, breaking, and staining from foods and beverages. 

How to Supplement Calcium Deficiencies?

Addressing calcium deficiencies involves multiple approaches. Dietary adjustments are primary; foods rich in calcium like dairy products (milk, cheese, and yogurt), green leafy vegetables (kale, spinach, and broccoli), and fortified foods (cereals and orange juice) should be consumed regularly. Seeds, such as chia seeds sesame seeds, and nuts, especially almonds, are also good sources. 

For those who are lactose intolerant or vegan, plant-based milk alternatives like almond, soy, or rice milk, often fortified with calcium, can be beneficial. Fish with edible soft bones, like sardines and canned salmon, also contribute to calcium intake.

In cases where dietary intake is insufficient or if there are malabsorption issues, calcium supplements can be considered. They come in various forms, including calcium carbonate and calcium citrate.

Causes of Discoloration Other than Lack of Vitamins

Habits like Smoking

Habits such as smoking can also cause tooth discoloration. Tobacco smoke contains tar and nicotine, which can build up on the tooth surface, leading to staining. Quitting smoking or reducing tobacco use can help prevent further discoloration.


Certain foods and drinks can stain teeth, including coffee, tea, wines, apples, and potatoes. Limiting the intake of these staining agents and practicing good oral hygiene can help to minimize discoloration. 

Dental Treatment for Discoloration

Dental treatments for discoloration offer solutions to restore the natural shine and brightness of stained or yellowed teeth:

Teeth Whitening

Teeth whitening is a common solution for tooth discoloration. Dentists may provide in-office treatments or recommend at-home products like whitening toothpaste, strips, or trays. 


Veneers are thin, customized porcelain or composite resin shells that are bonded to the front surface of discolored teeth. They can significantly improve the appearance of stained teeth by providing a natural, uniform color. Veneers are a durable and long-lasting option for addressing discoloration.

Dental Bonding

Dental bonding is a cost-effective alternative to veneers. This procedure involves applying a tooth-colored resin material to the discolored tooth surface and hardening it with a special light. Dental bonding can be an effective solution for mild to moderate cases of tooth discoloration.

Dental Hygiene

Proper dental hygiene plays a huge role in preventing tooth discoloration caused by vitamin deficiency. Maintaining a routine of brushing and flossing, along with regular dental check-ups, can help mitigate the risk of discoloration and maintain a healthy smile.

How to prevent tooth discoloration caused by vitamin deficiency

Preventing tooth discoloration caused by vitamin deficiency involves a holistic approach to nutrition and oral hygiene:

  • Balanced Diet: Ensure a well-rounded diet that includes all essential vitamins and minerals. Consume foods rich in vitamins A, C, D, and calcium, among others.
  • Regular Dental Check-ups: Visit your dentist regularly to detect any early signs of discoloration or deficiencies that may affect oral health. They can provide guidance tailored to your needs.
  • Supplementation: If dietary sources are inadequate or absorption is compromised, consider supplements after consulting with a healthcare professional.
  • Oral Hygiene: Brush and floss regularly to remove surface stains and prevent plaque build-up, which can exacerbate the appearance of discoloration.
  • Limit Acidic and Sugary Foods: These can erode enamel, making teeth more susceptible to stains.
  • Hydration: Drinking water helps wash away food particles and bacteria and may assist in preventing stains.
  • Dietary Awareness: If you follow a restricted diet (like veganism), be especially mindful to compensate for potential missing nutrients that are important for dental health.
  • Limit Staining Agents: Even with a vitamin-rich diet, it’s crucial to be aware of foods and drinks that can cause staining, such as coffee, tea, wine, and certain fruits.
  • Educate Yourself: Understand the signs of vitamin deficiencies and their impact on oral health. For instance, bleeding gums can indicate vitamin C deficiency.
  • Seek Professional Guidance: If you suspect a deficiency, consult with a nutritionist or healthcare provider for a comprehensive assessment and guidance.


Moussa, D. G., Ahmad, P., Mansour, T. A., Siqueira, W. L., Current State and Challenges of the Global Outcomes of Dental Caries Research in the Meta-Omics Era. Front Cell Infect Microbiol. 2022; 12: 887907. DOI: 10.3389/fcimb.2022.887907. Available online at:

Botelho, J., Machado, V., Proença, L., Delgado, A. S., and José João Mendes, J. J., Vitamin D Deficiency and Oral Health: A Comprehensive Review; Nutrients. 2020 May; 12(5): 1471. doi: 10.3390/nu12051471. Available online at:

Hombali, A. S., Solon, J. A., Venkatesh, B. T., Nair, N. S., Peña‐Rosas, J. P., Fortification of staple foods with vitamin A for vitamin A deficiency. Cochrane Database Syst Rev. 2019; 2019(5): CD010068. doi: 10.1002/14651858.CD010068.pub2. Available online at:

Iza Wojnarowski

Content contributor

Iza is a dedicated content contributor for Toothific. Having worn braces twice and currently using Invisalign to correct a mild overbite, Iza brings a unique perspective to her writing. She spends her time staying updated on the latest dental trends and treatments, ensuring her readers have the most current information for their dental care needs.

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