Excellent Root Canal work! My biggest fear- staying awake! The Office Staff as well as Dr Dianat…read moreare fantastic. I was so relaxed- I worried about falling to sleep during my Root Canal process and snoring. Great service AND technology here at Irvine Endodontics!

Based on the reviews, I was expecting and looking forward to a 5-star experience. Unfortunately,…read morethat was not my experience, and I felt I was given 1-star treatment. The female dental assistant was not welcoming or friendly. When I mentioned that I wanted to skip the CBCT scan due to financial reasons, as the cost can be hundreds of dollars depending on insurance, she continued to push the scan 4-5 times despite my clearly stating that I did not want it. I found this extremely uncomfortable and felt that my decision was not being respected. When it came time for the X-rays, the lead apron was tossed onto me rather than being placed on me with care. I have pectus excavatum, which made this particularly uncomfortable and, in my opinion, was not handled professionally. My experience with Dr. Omid Dianat was also concerning. I was placed in a Trendelenburg position, with my head lower than my feet. I have cystic fibrosis and related sinus issues, which make me particularly prone to dizziness and migraine spikes. I had disclosed my medical history and symptoms in the forms I completed prior to the appointment. Being placed in that position exacerbated my symptoms and left me feeling extremely ill afterward. I understand that certain procedures and positioning may be necessary, but I believe my medical history should have been reviewed and taken into consideration before positioning me this way. At the very least, I would have appreciated being informed beforehand so we could discuss whether there was a more appropriate position for me. Additionally, when the electric pulp tester (EPT) was used on an already extremely sensitive tooth, I would have appreciated even a brief warning that the test could cause significant pain. A simple 10-second explanation would have made the experience much less distressing. Overall, I left feeling genuinely disappointed because I had high expectations after reading so many positive reviews. I was hoping to feel heard, respected, and cared for throughout my appointment, particularly after taking the time to provide detailed information about my medical history and concerns beforehand. Instead, I left feeling that my decisions, comfort, and individual needs were not given the level of consideration I expected. I'm sharing this feedback because I believe these concerns could have been addressed with better communication, more attentiveness, and a little more compassion. I hope the office takes this experience seriously and considers how these interactions can be improved so future patients feel more comfortable, respected, and cared for.

I have extreme sensitivity in a tooth with a 10-year-old pulp cap. Last May, I bit into an RX date…read morebar (I've had these many times) and felt sharp pain in tooth #4. For six months I dealt with sensitivity, mainly triggered by hot and cold. I could eat and chew just fine as long as I started chewing on my left side first. Last May, I spoke with my dentist, had X-rays taken, and he told me I'd eventually need a root canal. He didn't give me any other solutions, so I just waited to see if things would get worse. Six months later, I scheduled an appointment with Dr. Gharib's office because the sensitivity was getting to me (even though it was on and off), and I started feeling pain up my cheek. I was worried about potentially having an infection or, even worse, an abscess. Christine at the front desk was so kind and accommodating. It was easy to schedule an appointment. She told me that Dr. Gharib is very conservative and only recommends procedures when absolutely necessary. I figured that was just something she said to everyone. At my appointment, I had X-rays done and reviewed them with Dr. Gharib. He was very kind, soft-spoken, and answered my many (many) questions while listening intently to my concerns. I did not feel rushed at all--I felt like I was actually being heard. After his examination, he didn't see any infection on the X-ray, but it did show a slight fracture in the pulp cap filling, which could be the cause of the heightened sensitivity. He didn't pressure me to do a cone beam scan or even suggest it; I personally requested it because I wanted to be absolutely sure there wasn't an infection at the root, since that would make a root canal necessary. The cone beam scan confirmed I had no infection whatsoever--thank goodness. He sat with me for a long while discussing what I could do to help the sensitivity and the slight fracture. He said it might be as simple as replacing the filling with an inlay or onlay, but since my pulp cap is very close to the nerve, that carries the risk of needing a root canal if it fails. He suggested trying Sensodyne for a few weeks and then having my dentist check whether an inlay or onlay, to replace the filling, is an option. There's a chance that might fix the problem. After my appointment, I felt so much more at ease. I was relieved that I didn't have an infection and grateful that I actually had options before committing to a root canal. Dr. Gharib even wrote me a long email afterward, reiterating everything we talked about. That, right there, is a dentist who truly cares. If and when I ever need a root canal, I'll be going to Dr. Gharib. He is professional, honest, thorough, and welcomes ALL questions. All the positive reviews you've read are true. Not every dentist cares like this!

I saw Dr. Saman R. Gharib today for an evaluation regarding a root canal, and I can honestly say he…read moreis one of the most knowledgeable and trustworthy specialist I've met. After visiting three different endodontist who gave me questionable and, in some cases inadequate treatment recommendations, it was incredibly refreshing to finally meet someone with true integrity. Dr.Gharib took the time to thoroughly evaluate my situation and explain everything clearly without pushing unnecessary procedures. His expertise professionalism, and honesty immediately stood out.It's clear from both his credentials and patient reviews that he genuinely cares about doing what's best for his patients-not just making a profit. After my previous experiences, I felt genuinely relieved and confident in his care. I highly recommend Dr. Gharib to anyone who's seeking an honest and skilled endodontist.

Dr. Jason Cho is an exceptional endodontist and a true professional. Another endodontic office told…read moreme that my tooth could not be treated and would need to be extracted. Thankfully, I decided to get a second opinion from Dr. Cho. I am incredibly grateful because he was able to save my tooth. Instead of recommending extraction, he carefully evaluated my case and found a solution. Dr. Cho is knowledgeable, attentive, and genuinely cares about his patients. He explained everything clearly, answered all of my questions, and made me feel comfortable throughout the entire process. The treatment went very smoothly. I had no pain after the procedure, no inflammation, and no complications. Everything healed perfectly, and the entire experience was much easier than I expected. The office is modern, clean, and welcoming. The staff is friendly, professional, and made me feel comfortable from the moment I walked in. I highly recommend Dr. Cho to anyone who needs an endodontist. I will definitely be recommending him to all of my friends and family. Thank you, Dr. Cho, for saving my tooth!

I want to thank Dr. Cho, Jennifer and Mike for taking such great care of me. I was in extreme pain…read moreand they were able to accommodate me because due to my urgent situation. I am truly grateful. Dr. Cho is unbelievably kind, informative and made me feel at ease throughout the entire root canal procedure. Let me tell you with certainty , you will be in reliable hands with Dr. Cho, I was so relaxed. Thanks again to the team, I can't Thank you enough! Tina Buckley

I can't say enough great things about this office. I was referred by my dentist for a possible root…read morecanal and to say I was in pain was an understatement. I called on Thursday afternoon. The sweet girl at the front desk literally got me in the next morning. A few hours later I had a root canal. Dr. Lin is very kind and did a great job with this terrified patient. Everyone at this office is awesome. I went from excruciating pain before my root canal to pretty much no pain after. Fabulous office.

UPDATE: Dr. Lin and I spoke on the phone Feb 3, 2026 and he…read morelocated my medical record. We agreed we will discuss a resolution at a future date after we exchange additional documentation with each other. I will update this post when appropriate based on new information. ORIGINAL REIVEW: I got my root canal here before my general dentist could place the crown. After the root canal I went back to the general dentist and upon taking X-rays told me the root canal was done improperly and was incomplete. I had to back to Dr. Lin for a second root canal on the same tooth. Upon going back the GP he said it's a little better but he's still not completely satisfied but would "probably be ok". Facing the reality of having to do a third root canal on the same tooth for "probably" not necessary, I did the crown after the 2nd root canal and hoped for the best. Flash forward about six years later and the same tooth got an abscess bleeding out to the gum. Ended up losing the tooth and had to get an implant suffering through more dental procedures and will end up costing almost $9,000 out of my own pocket for all the work to be done diagnosing and treating the problem with three different specialties and doctors. If the tooth couldn't be saved by Dr. Lin he had a duty to tell me that and then I could have gone to a different doctor or had the tooth pulled. Obviously I couldn't go back to Dr. Lin and this practice because he had already proven to me he is incompetent and can't be trusted. I would advise you to avoid this practice based on incompetence, failure at duty of care and the dangerously poor skill of the doctor. I'm filing the appropriate complaints with the licensing and insurance company. If it were up to me, this doctor would have his license revoked.

Went in for a root canal with Dr. T and Klaudine. They were…read moreboth very kind and helpful. Barely felt a thing

We loved OC Healthy Smiles at first, but our experience declined after the first year. Promised…read moregift cards were never honored, cleanings haven't been the same since our hygienist left, and my husband's crown issue is still unresolved despite referrals. For the price, we expected better communication and follow-through. Unfortunately, we've decided to go elsewhere.

I had to have a root canal redone. Definitely not looking forward to the procedure. From my first…read morephone call to schedule the appointment to the finished procedure, it was as pleasant as possible. Dr. Le was professional, experience, gentle as possible. His staff was professional as well. I was able to experience his interaction with his staff, which showed his respect for them. With my mouth gapping open... I highly recommend SC Endodontics in Costa Mesa.

Dr. Le is such an amazing sweet dentist who guided me through a tooth issue I was having. He gave…read moreme information on root canals where I may need one in the future as my tooth was starting to feel better. He never pressured me into anything and made me feel so comfortable. He is someone I can trust and really enjoyed learning from him. Beautiful office with great caring staff as well. Thank you Dr. Le!

This was my first time ever needing a root canal, and I honestly had no idea where to go or who to…read moretrust. I simply found this office, had a good feeling about it, and decided to give it a try. Looking back, I feel incredibly lucky that I chose this place. The office in Laguna Beach is beautiful, warm, peaceful, and welcoming. It has such a calming atmosphere that it hardly feels like a dental office. Dr. Bagheri, Elena, and the entire staff are absolutely wonderful -- genuinely beautiful people, inside and out. Everyone was so kind and caring that I never really had a chance to feel nervous, even though this was my first root canal. Dr. Bagheri is incredibly skilled, confident, and efficient. Everything was handled so smoothly and professionally that I felt completely comfortable and knew I was in very good hands. When it comes to something as important as dental care, I think the best compliment I can give is this: I would send the people I love here. I would recommend Dr. Bagheri and this office to my family and anyone I truly care about without hesitation. I feel very fortunate that I found this office and was able to receive the right treatment from such wonderful people. Thank you so much, Dr. Bagheri, Elena, and the entire staff. I'm truly grateful for the care you gave me.

I had such a great experience here. Dr. Bagheri is incredibly careful, thoughtful, and clearly…read moreexcellent at what he does. He made my root canal as easy and comfortable as possible, and I really appreciated that he personally called me that evening to make sure I was doing well. His office manager is lovely, the entire staff is so friendly and helpful, and the pricing was very reasonable. Great location with easy parking too. I would absolutely recommend him!

My review is not only for the business individually, but also in comparison to other similar…read moreEndodontic offices which I have visited. Dr. Um has provided me with such professional and quality care on my first visit, that I will definitely return and refer her to all my family and friends who have needs for endodontic care. I visited the Irvine office, it was clean and bright, her staffs were polite, pleasant and efficient throughout the whole visit. Insurance handling was a breeze. Dr. Um was professional, gentle and gave me all the information I needed in order to help me make the best treatment decision. Definitely earned my respect and a 5 stars recommendation.

Dr. Um and her staff were absolutely amazing! I had two root canals done and was really nervous and…read morescared going into the procedures, but they made the entire experience so comfortable and stress-free. I didn't feel any pain at all, except for a little discomfort when the numbing anesthetic was placed, which was completely expected. Everyone was so kind, professional, and made sure I felt comfortable throughout the whole process. I had such a great experience and would definitely recommend Dr. Um and her team to anyone needing a root canal. They were wonderful!

I had an excellent experience with Dr. Buoncristiani and his entire team. From my root canal and…read moreadditional procedures I needed, they made what could have been a stressful experience as comfortable as possible. Everyone worked together seamlessly, and their professionalism and efficiency were impressive. Dr. Buoncristiani took the time to explain everything , and I felt I was in very capable hands. I truly appreciate the outstanding care I received and would highly recommend Dr. Buoncristiani to anyone in need of an exceptional endodontist. Thank you Dr. Buoncristiani and staff !! Michele C.

I can't say enough great things about Dr. Buoncristiani and his team... Samantha, Shirley and…read moreMercedes at the front and Sindy and Lia in the back. When you hear the words root canal, you immediately expect the worst! Yet alone having to do two of them. I have been putting this off for years. However, my experience was the complete opposite. I came in dealing with a very difficult and painful situation, and Dr. Buoncristiani helped me when I needed it most. His skill, attention to detail, and genuine care were obvious from the very beginning. He took the time to explain in detail what to expect, made sure everything was done correctly, made me feel comfortable. Furthermore he treated me like a person, not just another patient. You can see he takes tremendous pride in his work and cares about your dental health and the outcome It's rare to find someone who combines this level of expertise with kindness and compassion. I'm extremely grateful for what he did for me and would recommend him without hesitation to anyone needing an endodontist. Dr. Buoncristiani turned a stressful situation into a positive experience. Walking out of his office, I felt a sense of gratitude, both for the care I received and for professionals who work with him. They turn a daunting experiences into moments of relief. I'm truly thankful to have been in such skilled and caring hands. Thank you Dr. Buoncristiani and staff. Christian S.

The worst customer service ever. They do not treat you as…read morepatient but as customer. I'm totally disappointed with their attitude and their behavior

I need 2 root canals on my right side and doctor Shin repaired the 1st root canal on Monday Oct…read more20th. I am pain free and doctor Shin was amazing! The office staff starting with the front desk, dental assistant and doctor are so Professional, Friendly and Amazing! I am already telling all my Family and Friends about Orange Coast Endodontics!