{"componentChunkName":"component---src-templates-post-js","path":"/blog/tooth-discolouration-causes-and-treatments/","result":{"data":{"wordpressWpSettings":{"title":"Keys Dental","wordpressUrl":"https://wp.keysdental.com.au","blogSlug":"blog"},"nextPost":null,"previousPost":{"path":"/blog/invisalign-open-day-2026-recap/"},"wordpressPost":{"id":"cd03053a-0e61-5161-ae7b-c3b3b48eaeb0","title":"Tooth Discolouration: Causes and Treatments","slug":"tooth-discolouration-causes-and-treatments","content":"

Teeth Whitening: Causes Of Tooth Discolouration And The Best Treatment Options

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A brighter, whiter smile is a common goal for many patients, and teeth whitening remains one of the most popular cosmetic dental treatments available. It’s normal for teeth to lose their sparkle over time. Understanding why tooth discolouration occurs is an important first step in choosing a whitening method that actually works.

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What Causes Stained Teeth Or Tooth Discolouration?

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Tooth discolouration and stained teeth are common concerns that can make your smile appear dull or yellow, and unfortunately, can be difficult to avoid. While many stains develop from everyday habits like diet and drinking coffee or tea, others may be caused by ageing, medication, or changes within the tooth itself. A thorough dental assessment can help identify the cause and determine the most appropriate treatment, and regular dental visits can help prevent and manage staining to
\nkeep your smile brighter for longer.

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Let’s break down the types of staining…

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Extrinsic Stains: Surface-Level Stains

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Extrinsic stains affect the outermost layer of the tooth (enamel). This can be caused by:

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The good news? Extrinsic stains typically respond well to professional whitening. With our in-chair Zoom whitening, surface pigments can be broken down quickly and effectively, revealing a brighter smile in just a single appointment.

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Intrinsic Stains: Beneath The Surface

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Intrinsic stains occur within the tooth structure itself, affecting the layer beneath the enamel.
\nCommon causes include:

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Intrinsic stains are generally more difficult to treat with teeth whitening alone. While whitening may provide subtle, gradual improvement in some cases, cosmetic treatments such as veneers or composite bonding are often more effective for achieving a noticeable and lasting result.

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Am I A Good Candidate For Teeth Whitening?

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Suitability for teeth whitening depends on several important factors that should be considered
\nbefore treatment begins:

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In-Chair Teeth Whitening vs Take-Home Whitening Kit

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At Keys Dental, we offer both in-chair Zoom teeth whitening and take-home whitening treatments to help patients achieve a brighter, more confident smile. While both can effectively brighten your smile, they differ in terms of treatment time, convenience, and the speed of results.

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In-Chair Teeth Whitening

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Speed of results: You’ll see noticeable results in just one session. Great for last-minute events or immediate transformations

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Strength of whitening: High

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Cost: $599 at Keys Dental

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Convenience and comfort: Done in one session, but requires you to visit the clinic and sit in the chair for about 90-120 minutes

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Sensitivity: Some patients may experience temporary tooth sensitivity after treatment due to the stronger bleaching agents

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Take-Home Whitening Kit

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Speed of results: Results appear gradually over several days or weeks, depending on how consistently you use the kit

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Strength of whitening: Moderate

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Cost: $350 at Keys Dental

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Convenience and comfort: Offers flexibility – you can whiten your teeth while watching TV or relaxing at home

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Sensitivity: Usually causes less sensitivity, but may require more time to achieve the same result

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Why a Professional Teeth Whitening Assessment Matters

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While teeth whitening can be an effective way to brighten your smile, the best results begin with a professional assessment. Not all types of discolouration respond to whitening in the same way, and some may require alternative cosmetic treatments. During your assessment, your dental professional will:

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How to Maintain Your Teeth Whitening Results

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No whitening treatment is permanent. Fortunately, there are several steps you can take to help maintain your results and keep your smile looking brighter for longer:

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The Bottom Line

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Tooth discolouration can occur for a variety of reasons, and understanding the underlying cause is often the key to choosing the most effective treatment. A professional assessment not only helps protect your oral health but also ensures your whitening treatment is tailored to your individual needs and expectations.

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If you’re considering teeth whitening, book a consultation with Keys Dental. We’ll assess your smile, discuss your goals, and recommend the treatment option best suited to your needs, helping you achieve a brighter, more confident smile.

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Book Now Learn More

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