How long does the bleaching result hold?
…is the second question everyone asks (the first being: which is the best bleaching method:). So, when do the teeth turn dark again?
For some people teeth will stay completely white for one year, after which they would need a minor ouch-up. in some patients the yellow teeth colour never relapses, and the bleaching results stay for life.
You are certainly wondering why is the persistence of the bleaching result so variable.
Once we finished teeth bleaching procedure, the factors that caused discolouration on the first place- keep working. This can cause decrease of colour with time.
Additionally to bleaching, in our dental office in Vienna we provide you valuable information of how to keep your white teeth from staining. Finally, when discussing the best bleaching method for you we make sure we also develop an inexpensive plan for later possible color corrections.
Which teeth-bleaching methods are good
The first bleaching method that was discovered 1982 is bleaching based on peroxide.
Today, 40 years later, we know this: When conducted properly, bleaching with peroxide is good, safe and effective procedure. Moreover we can rely on 40 years of scientific and clinical evidence that it works. From the same research we already know all the possible side effects, which makes the procedure extremely safe.
In the last couple of years we are seeing many new systems using various kinds of lights (bleaching lamps and similar).
Initially it was believed that this light may enhance the bleaching effect of the bleaching material. However we know now that this is not the case. Light (Lamp) has no significant influence on bleaching effect.
Lasers proved to be more effective than normal lights, but there are scientifically based concerns that lasers may also joepardize the tooth nerv.
That is why today, bleaching based on peroxide is considered the golden standard and the best practice in terms of safety and effectiveness. Among the peroxide based bleaching we will have many different concentrations and application modalities.
Here are some examples:
- 35% Hydrogen based bleaching gel is a great product but can only be used by a professional. This means dentist or preventive care assistant who attended special trainings for teeth whitening. This material is used for bleaching in dental office. As everything is done by medically trained staff it is called medical bleaching. Dental hygienist or a dentist will apply a gum protection and then bleaching product 2 times in sequence.
- Products containing 0,1-6% peroxide (or an equivalent of 3×6%=18% carbamide peroxide, which has the same effect) may be used at home, but only after an examination and detailed instruction by dental professional. In order to ensure the bleaching is safe for you, dentist will make sure your teeth are free from caries, enamel defect, exposed tooth necks and give you the detailed instructions. Since everything happens under the expert eye, this protocol is called supervised bleaching. In order to make sure those safety measures are followed, the law only allows those products to be bought by the dentist. Therefore those high-end products are not available to cosmeticians and general population
- The most commonly used home bleaching products for supervised bleaching are bleaching gel for splint (you need to go to the office 2 times and -bleaching procedure takes 14 days) and
- bleaching varnish (you go to the office only one time, and the bleaching procedure takes only 7 days).
- According to the EU law, bleaching products that your can get over the counter (like bleaching toothpaste, stick, bleaching pen…) or in a beauty saloon can contain maximum of 0,1% hydrogen peroxide. As this is extremely low concentration, it is consider that even in unprofessional use this shouldn’t cause any damage, but also excerpts very slow (if any) effect.
Which is the best bleaching method?
Short answer to which method is the best: it is completely individual!
For some of us it is better to sit in the office and have the professional do everything. For those, best option would be medical bleaching in office.
Others prefer to have complete control over the process. If you are like this: you will benefit from supervised bleaching, as the dentist will make sure you are medically fit for home-based bleaching and will instruct you and give the optimal material, bleaching gel with tray or a varnish.
If you want to give a bought product a chance, make sure you consulted the dentist first, so you know what your teeth can handle bleaching. Dentist will check the teeth for fillings, possible enamel defects and caries, and help you plan your bleaching in a safe way.