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Internal Tooth Whitening Rating 5 out of 5 based on 12 reviews

Internal Tooth Whitening

Some teeth due to being traumatized or being root canal treated can become very deeply discoloured and sometimes they become even black in colour. This can seriously effect the patients self confidence as often these discoloured teeth are front teeth which are on show when smiling. Traditional teeth whitening methods such as Laser whitening or home teeth whitening systems will not whiten such heavily discoloured teeth as the discolouration originates deep inside the tooth. For such discoloured teeth, some dentists prescribe porcelain veneers or crowns to hide the deep tooth discolouration. The problem with porcelain veneers and crowns is that extensive irreversible tooth tissue reduction is necessary which may result in the earlier loss of the tooth in the long term. However now there is internal tooth whitening and inside/outside tooth whitening techniques available to whiten such teeth.

How is Internal tooth whitening carried out?

At Pearl dental clinic we are pleased to offer internal tooth whitening and inside/outside tooth whitening methods which whiten very discoloured teeth from the inside where the discolouration originates. During the assessment visit, we check the discoloured tooth to make sure the tooth is a good candidate for internal tooth whitening and we usually take a small x-ray to make sure the tooth has no infection associated with it.

Using the dental microscope we remove some filling and root filling material from the back of the tooth and create an access area for the whitening gel. The tooth would still look normal from the outside. We then either place whitening gel directly over the root canal space (Internal tooth whitening) or create a special whitening tray that has access to the inside of the tooth (Inside/Outside whitening) for the whitening gel to be placed inside the tooth.

After a week of internal whitening we then reassess the tooth and if necessary continue with further internal whitening or inside/outside whitening until the shade of the discoloured tooth has become as white as the neighbouring teeth. Finally we restore the tooth with a white filling.

How long does Internal tooth whitening results last?

Internal whitening results usually last for many years but just like other teeth whitening methods, internal whitening may have to be repeated every few years to top-up the whitening results.

Are there any risks associated with Internal tooth whitening?

Internal whitening and inside/outside whitening treatments do not always work but in the right hands they are usually very successful treatments. If the internal whitening treatment does not work, a porcelain veneer or crown can be made instead. However its better to try the more conservative internal whitening treatment first to preserve tooth tissue.


Pearl Dental Clinic is open 7 days a week from 9am to 10pm. You can book a whitening consultation by calling us on 0208 547 9997 or emailing us or booking an appointment online




Latest Patient Reviews

  • Pearl Dental Clinic

    Professional, friendly, high quality work and most of all they make sure the patient is 100% happy with the treatment they provide, whether thats teeth whitening, veneers, or other surgical or cosmetic work. I would like to say a VERY BIG THANK YOU to Dr Vahid Motahar with his help i managed to get my teeth whitened just before my wedding date. Im so happy and would recommend their surgery to everyone, intact i was thinking of changing my dentist from claremont to pearl dental practise. I guarantee anybody they will not be disappointed with the quality of their work. :)

  • Dr Ehsan Esfahani

    Mr Dayle Robinson

    Staff are professional, warm, refreshingly easy to talk to and make me feel comfortable and valued. Dr Ehsan is fantastic and has a clear vision of my needs whilst being approachable and personable.

  • Pearl Dental Clinic

    My dentists knowledge and his enthusiasm to help me achieve what I am after,the staff in the front office area were also very friendly.

  • Pearl Dental Clinic

    Friendly service and excellent practioners! I was so unhappy with my teeth and now I feel they are perfect and I get comments from people all the time saying how nice they are!

  • Pearl Dental Clinic

    Doctor was very friendly. Just received my home whitening kit and so looking forward to start

  • Pearl Dental Clinic

    I came in on Saturday 31st October 2009 and had my teeth zoom whitened by your dentist Harshdeep Kaur. I just wanted to say thank you very much for the way I was looked after. It was a very professional service and I will recommend your services to all of my friends.
    Even though I am not local to the area your prices were very reasonable and you have saved me around £200 if I was to have gone to my local dentist. My teeth are now so much whiter! Thank you very much!
    Best wishes,

    November 2009
  • Pearl Dental Clinic

    For many years I had a horrible stain on my front tooth and with the discoloration, I would never smile. I was so conscious of my teeth, I had learnt to smile without actually showing any teeth and was constantly worried about what people were saying about my smile
    It got to the point that I needed to do something about it and I plucked up the courage to actually go to the dentist and thats when I came across the Pearl Dental Clinic on the internet. Their website was easy to follow and look around and found the prices were very reasonable so I made my first appointment
    On arriving at the clinic, I was made to feel so welcome and relaxed but also found it very professional. Dr Esfahani explained all the options I could go for and what would be best for me and I wasnt pressurized into anything if he knew it wasnt right for me. Once the treatment plan was decided, Dr Esfahani explained everything from start to finish and made sure that whilst the treatment was taking place, I was ok and not in any pain
    My treatment of whitening lasted 4 weeks in total and am amazed at the results, as I thought my teeth could never look as good as they do. After 3 days on starting the home whitening, my stain had started to disappear and after the 4 weeks, my teeth looked beautiful, considering my teeth were one of the darkest shades and are now a shade lighter then the most natural white, I am extremely impressed
    Considering I was someone who never smiled, I am now the girl that never stops smiling and that is all down to Dr Esfahani. So a big thank you to Dr Esfahani and his staff at the Pearl Dental clinic. He is fantastic at what he does and has your best interests at heart, he is genuinely interested in helping you to achieve the smile you have always dreamed of
    Thanks once again

  • Pearl Dental Clinic

    I would like to take this opportunity to say a big THANK YOU to Dr Vahid and his staff at the Pearl Dental clinic.
    Not only have my teeth been transformed from the darkest colour on the chart to the lightest I felt that the service was professional and caring, Dr Vahid explained thoroughly about the treatment and how it would work, set me my homework which I followed then finished the treatment and hey presto my teeth are beautiful and white.
    From the onset I felt important and relaxed and not that I was about to part with a lot of money for nothing.
    I would highly recommend this practice and will be seeing Dr Vahid for future treatments as he is genuinely interested in making smiles, mouths and teeth look pretty which is what we all need.
    Thank you very much and a prosperous 2008

  • Dear Dr. Esfahani

    Nicola from London

    Thank you so much for your fantastic job making my teeth look so good. Your professionalism and attention to detail is really appreciated.
    I look forward to seeing you on my return from India.
    Best Wishes

  • Pearl Dental Clinic

    I would like to say a very big thank you to everyone at Pearl Dental Clinic and especially Dr Vahid Motahar.
    The last ten years had seen my once attractive teeth become worn and discoloured and my self confidence had eroded withthem.
    After firstly achieving excellent results with the outstanding whitening process, Dr Motahar has transformed and restored my teeth with unbelievable skill and subtlety. He has, I feel, expertise and professionalism of the highest order. I consider myself very fortunate to have been able to benefit from this.

  • Dear Dr. Ehsan Esfahani

    Claire Maslen

    I just wanted to say how pleased I am with my teeth that were whitened on Friday at your clinic. Apart from a bit of discomfort (sensitivity etc!), I am really pleased and have recommended you to several friends this weekend.

  • Pearl Dental Clinic

    I am writing to express my thanks for the excellent service I received from Dr M Ali. On Wednesday 23rd October Dr Ali performed the Zoom Laser tooth whitening procedure with fantastic results. I would like to congratulate him and your surgery on a very professional job.
    I will be recommending your practice to my friends and colleagues.
    Kind regards,