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.

I've been to a number of Endodontists over the past few years and all were ok. But Dr. Seyedein was…read morefar and away the best Endodontist I've ever been to. The root canal procedure took no more than about 45 minutes total. Much shorter than previous treatments. I needed four lidocaine injections for the root canal procedure and, amazingly, the injections were virtually pain free. Eli, the Dr's assistant was exceptionally attentive and personable as well. And office staff gets high marks, too. Highly recommend Dr. Seyedein!!!

Watch out. They are thieves. I went in for a root canal. My…read moreinsurance needs a pre-authorization so it was going to take a couple weeks. So they said if I wanted to pay out of pocket and when the insurance approved it, they will reimburse me. So they coute me $1000 for the treatment. But I decided to wait for the insurance authorization. When the insurance came through, they were going to pay $650 and I suppose to pay $350. Ok, that was good. So I call the dentist to make an appointment for the treatment and they said that I have to pay $680. I told them about the insurance, but because the insurance was going to pay 65% of the amount, they raised the price. So I send them packing. Bunch of thieves. You better go somewhere else.

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.

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.

Dr. Mehta is very profesional, informative and meticulous at doing his work. The equipment he…read moreuses in his practice can't be found everywhere so you know you'll get covered both ways knowledge, experience and latest technology. I would highly recommend Dr. Mehta.

If you need a root canal (or suspect you do & your dentist wants to place a crown on without root…read morecanal) trust that you're in the most honest & skillful hands, literally, with Dr Mehta! He's extremely intelligent, shares his knowledge with you about your assessment so you understand, won't push procedures if they're not needed, & ensures you're comfortable and pain free before/during/after procedures, all in a gentle, kind & mindful manner. His assistant & front office are kind and efficient; love their no nonsense approach to coordinating with my dentist so I didn't have to. Wish all care providers were as professional & top notch as Dr Mehta!!

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

If you are looking for a wonderful dentist practice look no further! I particularly LOVE the…read moredental hygienist Jessica Nguyen! What a professional!! So thorough, gentle, helpful!! I would add 6 stars if it was available!!

Went to OC Smiles on Friday 3/13/26 for a loose implant because my dentist is closed on Fridays…read more Helena was great and the only good thing i will have to say about my experience. I didn't need a diagnosis, since I told the dentist that my implant was loose. He decided to take a ct scan, charge me for it and charge me for his false "diagnosis." $290 later.. he told me I need a New crown and wanted me to pay $2900 to return for 2 more visits to "fix" it. I Declined his outrageous treatment plan, knowing my implant was just loose. I waited until Monday with no problems and went to my dentist Dr. John Vartanian (Newport Beach) who did the implant for me. He tightened the screw and I was out of there in 10 minutes for free. I believe SoCal Smiles owes me $290 back for their unnecessary scan and incorrect diagnosis. They were trying to sell me something I didn't need and I'm quite upset about how this was handled when I brought it to their attention. I would go elsewhere and not trust this place with your time or money.

I was referred to Dr. Fife and his wonderful team, I'm so grateful they led me to such a caring…read moreoffice. From the moment I walked in, I felt welcomed, comfortable, and truly cared for. Dr. Fife is incredibly kind and thorough, and his dental assistant, Vida, was absolutely wonderful. Everyone took the time to explain everything, pay attention to every detail, and make sure I was comfortable throughout the entire experience. I honestly did not feel any pain at all! You can tell that this team genuinely cares about their patients and treats each person with kindness and compassion. Thank you, Dr. Fife, Vida, Claudia, Lauren, and the entire team, for making my experience such a positive one. I'm truly grateful and would highly recommend this office to anyone looking for exceptional, caring dental care!

Wonderful experience with Dr. Fife and his entire team. From scheduling to the warm welcome at the…read morefront desk, everyone was friendly and professional. Dr. Fife was thorough, explained everything throughout the procedure, and made me feel comfortable and genuinely cared for. I highly recommend Dr. Fife and his team!

Dr. Tsai just completed my root canal. I was very nervous about having him do the procedure as dr…read more Justice was out of town. But once I met him, he made me feel very comfortable. He listened to my long dental history and how scary I am. He assured me that he would do everything he could to make my experience pleasant. The process was pain free! He made sure I was comfortable and even prescribed something for me to help. I also appreciated the next day follow up to make sure I was okay. If I need to have any more root canals and let's hope not-- I would not hesitate to go to dr. Tsai.

Don't go here for treatment! I was referred by my general dentist for a re treat on my molar. I was…read moretreated by Dr. Nathanial Tasi. It took 2 painful hours and a decent size bag to retreat my root canal for it to fail 6 months later. My tooth became infected with an oral fistula. I decided to pull the tooth to not have to go through that again. I called the office to inform and ask why my root canal became infected and never received a call back. Super unprofessional not to even discuss the matter. Response to owner: I wasn't provided with a follow up appointment after treatment. I paid and the receptionists never informed me to follow up. I also never received a reminder card to folklore up. My dentist also stated your office never followed up. Please provide proof with the reminder card and when I was offered the follow up appointment. I also inquired to discuss with Dr. Nathanial Tsai and never heard back.

The staff were wonderful. They were really attentive with what they are doing!!! Also they have a…read morereally nice building. Also the care was good with the X-rays they provided.

Clean office, great explanations, nice staff!…read more They'll also send your details to all related doctors and provide you with a detailed treatment plan.