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    Patient Service Award 2017

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    Best London Dental Practice

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    Best London Dental Practice

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"I've been going to the Smile Cliniq for the past couple of years, and the treatment, care and advice from Chetan and his team has been faultless. Highly recommended." - A.S.
"Yet again I have been blown away by Smile Cliniq. After my filling fell out on Sunday night, I was distraught. But I phoned the Cliniq in the morning and got an appointment for the same morning. Dr Kaher put me at ease, even though I was very anxious, and did an amazing job on my..." - Robyn B
"What a great dental clinic! I was having issues with a tooth and Dr Sarita Kotecha was brilliant. Solved my dental issue quickly and explained everything in a way that made me actually enjoy the appointment (!!). They were able to squeeze me in last minute too. Highly recommend t..." - Saya Jones
"The service was so good at Smile Cliniq by Dr Sarita Kotecha, I recommended my wife to change dentist. We've been looking for a good dentist since moving to London 2 and 1/2 years ago and the quality we had received from our previous dentist was sub-standard. That all changed at ..." - Greg Jones
"I have had a dentist phobia for many years and would shake all over whenever I was there. Dr Chetan Kaher changed that. He was calm and very patient and understanding of my anxiety. All the staff are thoughtful and friendly. I don't shake anymore, which is wonderful. I still have..." - DEBRA MERRITT
"Fantastic service, professional and top notch technology. Very hygenic and Dr Chetan Kaher has a very steady and experienced hand. Highly recommend." - Amrita Chauhan
"I have had a dentist phobia for many years and would shake all over whenever I was there. Dr Chetan Kaher changed that. He was calm and very patient and understanding of my anxiety. All the staff are thoughtful and friendly. I don't shake anymore, which is wonderful. I still have..." - DEBRA MERRITT
"Friendly and helpful manager. Dentist was also friendly and efficient,Gave me lots of advice about dental care showing video." - Filippa Milioto
"Needed an emergency appointment, I was seen the same day! Great service and friendly staff" - Elena Milioto
"I found the the team at smile very professional and friendly, nothing was too much trouble. Chet presented all the options and my selected course of treatment took place over a year. As it involved one of my front top teeth I had some concerns and Chet was always available to ans..." - Irin Wu
"I have a hereditary tendency to get dental cavities, ensuing painful dental treatments, which left me scared of visiting dentists. Now, in my early thirties, I did everything to avoid dental checks. I also gave up on having cavity-free teeth. Two years ago, I was forced to find a..." - Rukmini
"I have just finished my year long lingual brace treatment with Dr Sarita Kotecha which has been a huge success. I'm so happy with the results! The staff at Smile Cliniq have always been friendly, helpful and welcoming; fitting me in for last minute appointments when necessary and..." - Maayan Bianca
"My wife needed to see a dentist on an emergency basis on a Saturday after a bad fall the evening before. We called on Saturday morning and they were able to take us that afternoon. The quality of care, both technically and inter-personally, could not have been better. If we lived..." - Hal N.

Re-RCT (Re-Root Canal Treatment) In London

Cases of failed root canal treatments can now be successfully treated, thanks to modern technologies. A failed root canal treatment can be potentially recognised by pain and/or swelling.

New technologies have increased success rates of treating failed root canal treatments:

Magnification loupes/ Microscopes with fibre optic lighting system have improved a dentist’s vision and therefore the chances of the treatment’s success.

Ultrasonic devices allows the endodontist to more efficiently and accurately remove old root canal materials and other intra-canal hindrances so that a success can be achieved even with most difficult root canal failure cases.

Improved instruments, better materials and medicatements for disinfecting, filling and repairing root canals and innovative new technologies have lead dentists and the patients to get re-treatments completed for a higher number of root canal failure cases.  The bacteria Enterococcus Faecalis has been found to cause some root canal treatments to fail.  Iodine has been found as an suitable disinfecting agent which kills this bacteria and increases chances of re root canal treatment success.
The dentist are now able to treat the root canal cases with better diagnosis and visualization thanks to new technologies such as digital radiography. Also the radiation exposure has been greatly reduced with digital radiography.

Re-root canal treatment options

In case of root canal failure, 3 options are available. Patient can either opt for:

  • Non-surgical endodontic re-treatment
  • Surgical endodontic procedure done (Apicectomy with retrograde filling)
  • Extraction of the tooth

Today, well-trained general dentists and root canal specialists (endodontists) alike can perform non – surgical endodontic root canal re-treatment which is very cost effective, time saving and quite predictable as compared to other treatment alternatives like tooth extraction. But at times the root canal failure case cannot be re-treated by non-surgical methods. In these cases dentists can use surgical endodontics to re-treat a root canal failure case, which may be preferred over tooth extraction.

Re Root Canal Treatments Before and After (pictures supplied by Dr Nojan Khalehoghli)


Non-Surgical Root Canal Re-Treatment Method


The main aim of Non-surgical endodontic procedure is to save the endodontically failed tooth. But at times, patients’ own dental crown needs to be removed. In some cases access can be made possible through the existing crown. This crown may later need to be replaced.

When access to the pulp chamber has been effectively gained the procedure may further involve the following steps:-

Post and core removal or any broken instrument from the root canal/pulp space.

Locating and treating the earlier missed or undetected canals.

Removing the earlier filled material from the root canal spaces

Improving the quality of the root canal shape to accept a better root canal filling

Making way through the blocked canals and by-passing/repairing canal ledges.

Repairing any mechanical and pathological perforations of the root present.
Once these objectives are achieved, the root canal space is cleaned well, re-shaped, completely disinfected and finally sealed.   A protective restoration can then be placed in the end to restore the proper tooth form, function and aesthetics.

Number of Appointments for Root Canal Re-treatment Procedure
Mostly root canal re-treatment can be done in 1-2 sittings.  However to make a final restoration for the tooth, this may take another 2 sittings if required.  Most root canal treated teeth are restored with dental crowns.

Pain after Root Canal Re-Treatment
Patient may on occasion experience some pain and soreness for several days after root canal re-treatment procedure.   For pain relief after root canal re-treatment, patient can take general pain medications.

How Successful Is Root Canal Re-Treatment Procedure
Root canal re-treatment will remove the infection from the tooth and will relieve pain and discomfort of the patient. Root canal re-treatment saves natural tooth structure and treated tooth can function for years and can function throughout life.
Success rate and prognosis of root canal re-treated tooth is not as good as root canal treatment done for the first time. If root canal re-treatment is unsuccessful, then patient can get endodontic surgery done or can opt for tooth extraction with replacement of missing tooth with dental implants or dental bridge.

These are variable and depend on the complexity of the case but can be anywhere from £450-£950.

Complications of Root Canal Re-Treatment
Root canal re-treatment is a safe procedure but complications may occur after procedure. Re-infection may occur after root canal re-treatment. To avoid any complications after root canal re-treatment, procedure should be done by an experienced endodontist or specially trained dentist.

Surgical Endodontic Procedure
Surgical method of treating a root canal failure case involves raising a small flap adjacent to the involved tooth in order to gain entry and treat the root canal infection. Surgical line of root canal treatment is a minor in office procedure done under local anesthesia. When the infected area is exposed the dentist performs curettage (the removal of diseased and infected tissue by  scooping).


This is usually followed by the apicoectomy procedure in which the infected root portion especially the root tip is removed. A small filling is then placed from the root end side to seal the left healthy part of the tooth root. Surgical endodontic procedure tends to give a good long term prognosis if the entire infection can be effectively eliminated.


Unfortunately at times the re-treatment efforts and surgical endodontic procedures may not be possible or cost-effective and tooth extraction may be the only alternative. But to save a previously endodontically treated tooth which is failing is usually possible and predictable, being the most conservative option for the patient.

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