John H Koot, DMD

I had a horrible experience with Dr. Koot, he was incredibly unprofessional and the emergency treatment that he provided has caused permanent nerve damage. I was in Las Vegas for a holiday and chipped my tooth, I needed a root canal. I had called my best friend in Canada (also a dentist) and had her communicate with Dr.Koot. They agreed that a root canal was necessary. He started the procedure and was focusing more on my partner than myself. He had to try to remove the root 4 times and therefore had to complete 4 x-​rays (all of which he charged me for). He rebonded my tooth and decided to give me a discount because my partner was attractive.
When I returned to Canada I had blurred vision and excruciating pain. I went to my dentist where they x-​rayed the tooth and sent me to a specialist. The root canal was not done properly.
I had to have another root cnal on the same tooth a week later. The specialist had never seen the material that was used in my tooth. He later called Dr. Koot to find out that it was sargenti paste. The American Association of Endodontics state that:
«Paraformaldehyde-​containing endodontic filling materials or sealers (frequently known as Sargenti pastes, N-​2, N-​2 Universal, RC-​2B or RC-​2B White) should not be used for endodontic treatment because those materials are unsafe. Extensive scientific research has proven unequivocally that paraformaldehyde-​containing filling materials and sealers can cause irreversible damage to tissues near the root canal system including the following: destruction of connective tissue and bone; intractable pain; paresthesia and dysthesia of the mandibular and maxillary nerves; and chronic infections of the maxillary sinus. Moreover, scientific evidence has demonstrated that the damage from paraformaldehyde-​containing filling materials and sealers is not necessarily confined to tissues near the root canal. The active ingredients of these filling materials and sealers have been found to travel throughout the body and have been shown to infiltrate the blood, lymph nodes, adrenal glands, kidney, spleen, liver and brain.…
Public health concerns and litigation have made the AAE aware of a significant number of patients who have suffered injuries as a result of treatment with paraformaldehyde-​containing filling materials and sealers. Undoubtedly, there are many other patients who have also suffered injuries because of these materials, but whose injuries have not been publicly disclosed [4].»
To make matters worse I discovered after my repeat root canal that Dr. Koot did not use a dental dam to protect my tooth from infection. This resulted in me being on antibiotics for a month. In Canada, a dentist can loose their liscense to practice for not using a dental dam during a root canal.
I still have pain and it’s been two months. I’m currently waiting to have a crown done on this tooth and I will be filing a formal complaint with the Nevada State Dental Board. I communicated with Dr. Koot to get my money back and he recharged me the discount and refunded me for the root canal. The first cheque that he sent me bounced. I just really don’t want this to happen to another person. I would not wish this experience on anyone.

Dr. Koot gave me a beautiful new smile with my new veneers! I have a movie star smile now thanks to him!

I have been going to Dr. Koot since 1994. He has always been an excellent Dentist, and I highly recommend him. Most recently I had to have a root canal done and my insurance had just run out. But he made it very affordable for me, and as always excellent care.
Thank You Dr. Koot.
Vivienne Coe

Dr Koot changed my life forever by transforming my smile! He is the best dentist I know. I love my smile now!

I was in Vegas last year and my crown came out. I had to find a dentist asap and found dr koot. The experience was extremely unnerving and unusual. The front office people very nice. Dr koot was in the lobby when I arrived and said I had a funny accent or some peculiar comment. He wanted to do surgery on me and put in an implant,
I told him all I wanted was to get the tooth re cemented in and my dentist in az will take it from there. Dr koot was very unprofessional going on with very bizarre language and insulting dialogue.
If you look his name up you will see an interesting article about him you may want to know about ahead of time. When I got back home to my dentist he remade a new crown for me replaced it it looks fantastic. when dr koot did mine he put it in crooked and look just awful I would be aware of all these things before I ever go to this dentist in Las Vegas