Teeth whitening: what actually works and what doesn't

Introduction

Whitening claims are everywhere: strips, pens, LED kits, charcoal paste. Some lighten stains safely. Many do little. A few can irritate gums or enamel if used the wrong way.

Here is what actually works, from a clinical view at Moonee Ponds Smiles.

What professional whitening does

In-chair and dentist-supervised take-home whitening use controlled peroxide gels in custom trays or professionally applied systems. They target extrinsic stains from coffee, tea, wine, and smoking, and can brighten natural tooth colour within safe limits.

Results vary with your starting shade, enamel thickness, and whether discolouration is intrinsic (inside the tooth) rather than surface staining.

What usually does not deliver

• Charcoal and abrasive pastes: Can scratch enamel and do not reliably bleach colour.

• One-size trays and drugstore gels: Uneven contact, gum burn risk, and modest change for many people.

• Harsh DIY hacks (lemon, baking soda): Acid and abrasion can damage enamel.

Sensitivity and safety

Temporary sensitivity is common and usually settles. We check for cavities, cracks, and gum issues first. Whitening over decay or leaking restorations is a bad idea. Crowns, veneers, and fillings do not whiten; we plan shade matching around that.

How long results last

With good habits, less staining drinks and regular cleans, results can last months to a couple of years before a top-up. Maintenance trays or occasional touch-ups keep the shade stable.

Is whitening right for you?

If you want a brighter smile and your teeth are healthy, a consult will confirm whether in-chair, take-home, or another cosmetic option (like bonding or veneers for uneven colour) is the better path.

Next step

Book a whitening consult on (03) 9689 1131 or at mpsmiles.com.au. We will give you an honest plan and expected shade range before you start.