Testimonials and reviews


Excellent & pain free treatment! Lovely & modern premises and equipment. I have had a bad experience with dentists, so was extremely nervous, but everything went very well. Dr Nikolai explained everything clearly before he started and as it happened, unfortunately my tooth could not be saved as there was a crack that went all the way through. So he removed the bacteria from the tooth and gave me a temporary filling and now I have to have an extraction. He could easily have done the full root canal treatment and charged me accordingly, but it would not have lasted and he was totally honest and took photos of the inside of my dead tooth so he could explain everything to me. I can't praise him enough. Hopefully I won't need to return again, but if I do need root canal treatment in the future, I know where to go. The treatment did not hurt and my anaesthetic has now worn off and I am pain free, thank you so much!! I can't recommend enough.

Karen Brown

I recently had a root canal done by Dr Orsteen. As a very nervous and anxious patient he was reassuring and put me at my ease. I can honestly say that I felt no pain at all during any part of the root canal and surprised to find that I also seem to have no pain post procedure! The team were lovely, Amanda the dental nurse was calm and professional and Jasmin is welcoming and personable. I highly recommend!

Gemma Bucknill

First of all I am usually not one to give reviews. However I felt the sincere need to take the time out to do this.
Honestly speaking, this root canal specialist is without a doubt TOP OF THE RANGE!!
Please don't waste your money else where.
Doctor Nicolai Osteen is a real professional. He has a gentle personality and approach which will call you down, if you are nervous and give you total peace of mind.
My proceedure was painless... Nervous free and very comfortable. He explained the whole process to me and was very transparent and honest!!
I will recommend him and his entire team any day.
Jacqui the receptionist was very professional and thorough with her explanations.
She gave me enough information to make an informed choice.

Thank you very much root canal referral center for making my dental journey a pleasant one!!!!!

Fran Adabie

Honestly the best dental experience of my life. Dr. Nicolai is so kind and gentle and puts you at ease. He explains everything very well and listened to all your concerns. He clearly has some fantastic equipment too. He did a fantastic job on a tricky root canal and I literally had no pain during or even after the process. Even the injection didn't hurt unlike various fillings I've had at my regular dentist. He let me listen to an Audiobook whilst he worked away (I highly recommend listening to something during the process to take your mind off it) and I was so relaxed that I was genuinely sad when he had finished. I was terrified before as I had heard various root canal horror stories, and was fully prepared for pain and for the days after.. but I had zero. I could not recommend Dr. Nicolai and the team more. If you need root canal then I do not think you will find better in London! I wish all dental experiences could be as wonderful as this! Worth every penny!

Tanya Chancellor

I was a very nervous patient (used to have sedation for fillings in the past)
The team here were excellent and made me feel at ease talked me through the whole procedure, even booked more time so that they could go slowly. They saved my tooth and it was a painless experience.

Asjad Imran

I was very anxious before my root canal work but as soon as I entered the state-of-the-art room in which Dr Orsteen works I felt more relaxed. It inspires confidence. Dr Orsteen has a professional and pleasant manner. He explained everything before and during the procedures, which was reassuring and managed my expectations. It was also helpful to understand what and why he was doing things and how long they would take. The procedures were so much better to cope with than in a regular dentist’s chair as the machines are almost silent! Afterwards Dr Orsteen showed me what he had done, again with explanations, using an X-ray clearly displayed on a large screen. The work I needed was efficiently completed by Dr Orsteen in two visits and the whole experience was not at all what I had nervously anticipated.

Rosalind M

Our little daughter is currently being seen by Dr Nicolai Orsteen after a full avulsion of her front tooth.

Dr Nicolai Orsteen changed the course of our daughter's initial NHS treatment by clarifying her situation to us and proposing alternatives that we weren't previously aware of. We felt empowered to make the best choices and considering we were having to make choices with long term implications for our daughter, this made all the difference to us.

We feel she has greatly benefited from both Dr Orsteens' expertise and the warm and caring environment that helped her over her fear of treatment. She had no pain during treatment and everybody at the clinic has done everything they could to make this difficult experience for a child bearable and I cannot thank them enough.

Katja S

I highly recommend the work of Dr Nicolai Orsteen. He has carried out root canal treatment in the past for me and, more recently, for my son. He is highly skilled, and his calm and reassuring manner make you feel you are in extremely safe hands. He does everything to make the treatment as pleasant as possible, and our dentists have been very complimentary about the results.

Jane C

I was referred to Dr Orsteen by my dentist for emergency root canal treatment. I received excellent and professional care by the team at Root Canal Dental Referral Centre. I would recommend their service to family and friends, as Dr Orsteen was wonderful and reassuring and listened to my concerns. The clinic is lovely and in a convenient location to those in the Richmond, St Margaret’s and Twickenham areas.


Dr Orsteen clearly explained the procedure, appeared to work quickly and efficiently and, best of all, stood by his promise not to hurt me!

David L

My experience of treatment from Dr Orsteen has always been exceptional. If the purpose of my visit had been for anything other than dental treatment, I would come to the practice every day!

Paul K

The treatment at Dr Orsteen’s practice couldn’t have been better. He explained everything clearly and instilled a sense of confidence. I felt comfortable throughout, and I had virtually no discomfort the morning after the procedure. Based on my experience, I would highly recommend Dr Orsteen.


100% recommend! I have had an absolutely great experience with Dr Nikolai for my root canal treatment. Beautiful, state of art dental studio and highly experienced doctor!

Yulia Casamassima

Great results out of my treatment! I had to have a small hole drilled through my crown to receive a root canal treatment. The condition is compounded by dying nerves and gum infection... My local dentist wasn't confident in carrying out the work, but Nicolai tackled it perfectly. Many thanks! K.

Ke Ke

Dr Orsteen is a consummate professional whose care of his patients is as stellar as his dedication to his vocation. When I visited his very clean and relaxing practice (a touch of the Dr’s Scandinavian inheritance) with an emergency molar infection, he dealt with it with reassuring precision and patient straightforwardness. The root canal procedure was brisk, painless, stress-free - and absolutely excellent value for his top standards. For my future dental difficulties I shall make Dr Orsteen my first port of call and if you are weighing up choices then I wouldn’t hesitate to recommend you do the same.


Amazing! Simply great. Painless (I actually almost fell asleep on the chair during a root canal treatment :)))) )and no hidden charges! I strongly recommend this practice.

Sisi Doneva

Really happy with my experience all round. It was straightforward getting a consultation booked and after the checkup, Nicolai provided me with my different treatment options clearly without any pressure or upselling, only his professional opinion. Treatment was done with care and any pain was mindfully addressed. Excellent place to go if you're like me and have a bunch of questions to ask about what your treatment includes.


Couldn't be happier. Had to undergo a double root canal (2 teeth in 1 day). Needless to say that one root canal is stressful enough, and I was not looking forward to it. However, the clinic is immaculate and calming. The staff were professional and extremely pleasant and the doctor was fantastic. I felt nothing, and the procedure was done fairly quickly. I would definitely recommend the clinic, and wouldn't hesitate to return should I require any future root canals!

Rebecca Mercer-Eloff



Dr Orsteen is a highly skilled clinician who does not compromise in delivering quality care. His calm and professional manner throughout the treatment process puts patients at ease and his highly qualified team always use excellent equipment, materials and techniques, including the highest levels of cross-infection.

I feel Dr Orsteen always cares and has the best interest of the patient as his first priority. He is a true professional, with a sympathetic and humble approach, that many patients and referring dentists have highly appreciated over the years. He also has the ability to build lasting relationships, both as a clinician and as a human being.

I would happily recommend Dr Orsteen to any of my patients or other referring dentists. I would not hesitate to have treatment by him and his team for myself or my family.

Dr Antimos OuzounoglouDDS, Tandlakare, Gothenburg, 1999

We have been working with Dr Orsteen for several years now, referring most of our patients in need of a root canal treatment to him. We, and our patients, are always very happy with his professionalism, gentle approach and excellent treatment results and would strongly recommend him.

Dr Nicole Sturzenbaum

For years, I have been referring cases to Nicolai and not only are my referred patients happy, but so am I. He is excellent with patients and his work is just perfect! Thank you again for your professionalism.

Dr Peter-Daniel Das

Over the last few years, Dr Nicolai Orsteen and I have treated hundreds of patients together. I do not hesitate to refer my patients to him for their endodontic needs, as I have found him to be ethical, knowledgeable and with the highest clinical skills and standards. My patients are very pleased after having had painless and efficient endodontic treatment, with the highest level of care, by a practitioner who places their best interests first.

Dr Philip Walberg