Tooth discolouration has different causes. A dental assessment can help identify the cause and whether any treatment is appropriate. Cosmetic treatment is elective; your dentist can discuss the potential benefits, risks, limitations and alternatives, including no cosmetic treatment.
This page describes tooth staining and treatment options that may be considered after assessment.
Stains on your teeth can be classified into two primary categories: extrinsic stains and intrinsic stains. Understanding the cause of your stains is essential in determining the best treatment approach for you.
Extrinsic stains are those that appear on the outer surface of your teeth. They are typically caused by external factors such as food, drinks, smoking, and poor oral hygiene. The most common causes of extrinsic staining include:
Fortunately, extrinsic stains are typically easier to remove and respond well to professional cleanings and teeth whitening treatments.
Intrinsic stains occur within the tooth, beneath the enamel, and are often more difficult to treat. These stains are caused by factors that affect the tooth’s structure, including:
While intrinsic stains may require more advanced treatment options, our team at Hornsby Dental is equipped to provide effective solutions tailored to your needs.
There are several contributing factors to teeth staining, some of which are beyond your control, while others can be managed with proper care. Below are the most common causes of teeth discolouration:
As mentioned, foods and beverages like coffee, tea, cola, berries, and red wine are some of the leading causes of extrinsic stains. These foods contain pigments and tannins that can cling to the tooth surface, leading to discolouration over time.
Tobacco use is one of the most notorious causes of staining, leaving behind yellow and brown stains that are difficult to remove. Smokers may notice their teeth darkening over time, even with regular brushing.
When oral hygiene habits are neglected, plaque and tartar can accumulate on your teeth, leading to a build-up of stains. Insufficient brushing and flossing allow bacteria and food particles to stick to the surface of the teeth, causing discolouration.
As we age, the outer layer of enamel on our teeth naturally wears down, exposing the darker dentin underneath. This leads to a more yellow or greyish appearance of the teeth, even if stains are not present.
Certain medications, such as tetracycline antibiotics, can cause intrinsic stains, particularly when taken during childhood development or pregnancy. Additionally, medications like antihistamines, blood pressure medications, and antipsychotic drugs can also contribute to discolouration.
At Hornsby Dental, we offer a variety of treatment options for removing teeth stains and improving the overall appearance of your smile. Depending on the type of staining, we can recommend the most suitable treatment for your needs.
For mild extrinsic stains, professional polishing is often the most effective and simplest option. During a routine dental cleaning, your dentist or oral health therapist will use a special paste and a rotating instrument to gently polish your teeth. This process helps remove surface stains caused by food, drink, and plaque build-up. Polishing is ideal for:
While polishing is effective for removing superficial stains, more stubborn or deeper stains may require additional treatments.
Whitening may lighten natural teeth, but the degree and duration of colour change vary. Some discolouration responds poorly, and sensitivity or gum irritation can occur.
Whitening may lighten natural teeth, but the response and treatment time vary. Sensitivity and gum irritation can occur, and fillings, crowns and veneers do not whiten in the same way. Follow the instructions for your prescribed product and contact your clinician if symptoms develop or you are unsure about continuing. Read treatment risks, recovery and alternatives.
Teeth whitening is most effective for:
Crowns, veneers and tooth-coloured fillings do not whiten in the same way, so colour differences can remain. Your clinician can assess the cause of discolouration and explain suitable options.
Composite resin can be bonded to selected tooth surfaces. Preparation varies; any enamel removal is irreversible. Staining, wear, chipping or loss of bonding can occur, and ongoing maintenance is needed.
Bonding works well for:
While bonding is less invasive and more affordable than other treatments, it does require periodic touch-ups and may not be as long-lasting as other options.
Porcelain veneers cover the front surfaces of selected teeth. Suitability depends on oral health, remaining tooth structure and bite. Preparation may remove enamel irreversibly, and repair or replacement may be necessary over time.
Porcelain veneers are ideal for:
Fit, colour and appearance may differ from expectations. Your dentist can discuss preparation, risks, maintenance and alternatives.
A crown covers a prepared tooth. Suitability depends on the condition of the tooth and an individual assessment. Preparation removes tooth tissue irreversibly; fit, colour and appearance may differ from expectations, and repair or replacement may be needed.
Crowns are ideal for:
Crowns involve removing more tooth structure than bonding or veneers, so they’re usually reserved for teeth that also need strengthening.
While professional treatments are highly effective for removing stains, the best way to maintain a bright, healthy smile is through consistent, at-home oral care. Brushing your teeth twice a day with fluoride toothpaste, flossing daily, and visiting Hornsby Dental for regular check-ups and cleanings will help minimise staining and keep your teeth looking their best.
Hornsby Dental is at Suite 21, 14 Edgeworth David Avenue, Hornsby, three minutes’ walk from Hornsby Station, with Saturday appointments. Typical prices for stain treatments:
Your dentist will check what’s causing the discolouration and give you a quote before any treatment. See the full dental price list, read about teeth cleaning in Hornsby, or call (02) 8090 1100.
If you have concerns about tooth discolouration, contact the practice for an assessment and discussion of suitable options. Outcomes vary between people and treatments.
Book an appointment to discuss tooth discolouration and the options appropriate to your dental circumstances.
Whitening toothpastes can lift some light surface stains, but they won’t change the natural colour of your teeth or remove deeper stains. A professional scale and polish removes surface stains and tartar much more effectively.
Polishing away surface stains is usually done in a single visit as part of a check-up and clean. In-chair whitening is generally completed in one appointment, while take-home whitening is used over a few weeks.
Whitening works well on many yellow and brown stains from food, drinks and ageing. Some internal stains (for example from certain medications or a past injury) respond less well, and whitening does not change the colour of existing fillings, crowns or veneers. In these cases bonding or veneers may be a better option.
Brush twice a day, rinse with water after coffee, tea or red wine, avoid smoking, and keep up regular check-ups and cleans.
