They are often discussed together, yet they solve different problems. Whitening changes the colour of your natural teeth. Bonding changes their shape as well as their look. Here is the honest difference, who each suits, what it costs and when the right answer is neither.
Lifts the shade of natural teeth with a professional gel. No reshaping.
Tooth coloured resin sculpted onto teeth to reshape, close gaps and repair chips.
Costs are indicative ranges and vary by city, dentist and how many teeth are treated. Confirm current prices with the provider.
Whitening only changes colour. If your teeth are a good shape and well aligned but look dull or stained, it is the simplest and least invasive way to brighten your smile. It does nothing for chips, gaps or worn edges, and it will not change the colour of existing fillings, crowns or bonding, which can leave them looking out of step once natural teeth lighten.
Bonding changes shape. A skilled dentist layers tooth coloured resin onto the teeth to close a small gap, rebuild a chipped corner or even out an edge, then polishes it to blend. It is largely additive, so it usually removes little or no natural tooth, and it can often be repaired or adjusted later. The trade off is that resin is not as stain resistant or as hard as natural enamel, so it can discolour and chip over the years and needs upkeep.
A common, sensible sequence is to whiten first, let the shade settle, then bond to match the new brighter colour. Bonding cannot be whitened later, so getting the order right matters.
Your teeth are healthy and well shaped, your only wish is a brighter shade, and you have little or no visible dental work that would be left behind.
You want to repair a chip, close a small gap or even out edges, and you accept that resin needs care and occasional repair.
Many people whiten first for colour, then add a little bonding to perfect shape. Done in that order, the bonding is matched to the brighter shade.
If your main concern is crooked or crowded teeth, neither whitening nor bonding fixes alignment, and clear aligners or braces are the honest route. If teeth are heavily worn, broken down or you want a dramatic, very durable change across many teeth, porcelain veneers or crowns may suit better, though they remove more natural tooth and cost more. Deep intrinsic staining, for example from certain medicines, often resists whitening and is usually better addressed with veneers. A good dentist will tell you when a cheaper treatment will not deliver what you are picturing, rather than selling you one that will disappoint.
Good to know
Both are dental procedures best carried out by a qualified dentist after a check of your teeth and gums. This page is general information, not dental advice. Results vary from person to person. Ask to see the dentist's own bonding work and confirm what upkeep each option needs before you decide.
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