If you have teeth with composite bonding and want a brighter smile, there is an important limitation you should understand before booking a whitening appointment.
Why Bonding Does Not Whiten
Composite resin — the material used for dental bonding — does not respond to peroxide-based whitening products. The resin is a synthetic material and does not contain the organic chromogens that whitening agents target. Only natural tooth enamel and dentine are affected by whitening treatment.
What Happens When You Try
If you whiten teeth with existing bonding, the natural teeth will lighten but the bonded areas will stay the same shade. This can make the bonding more noticeable — especially on front teeth where colour-matching is critical.
The Correct Approach
The standard approach is to whiten first, then replace or add bonding to match the new, lighter shade of your natural teeth. This requires that any existing bonding be removed and replaced after whitening. The bonding shade is selected to match the post-whitening tooth colour.
Consult Your Dentist First
Before pursuing whitening, discuss your existing dental work with your dentist. They will assess whether whitening is the right path, what the impact will be on your bonding, and whether replacement bonding is factored into the plan. At Smileworks Dental in Calgary, we provide a complete cosmetic assessment before recommending any whitening treatment.