Most unfortunately I've had occasion to visit Dr. Sim multiple times. Luckily for me, he's a fantastic dentist. I've never left here in pain after a root canal, not even had to take medication after which is probably partly my own pain threshold but also I think speaks to his skill. He's got a great bedside manner, is very communicative, and his staff is great too. I'd absolutely recommend his practice. read more

Dr. Gabriel Sim is the best Endodentist I have ever been to. Very friendly, knowledgeable. He always takes the time to discuss the issue with you, explain the procedure, next steps and any conséquence. I had two route canals (one very recent 12/19) and did not feel anything at all or any pain after the procedure. Highly recommended. Clean office and very friendly staff. read more

Needed a root canal. Simms team got me in on the fly. Great communication & explanation of what to expect. I was good to go in know time. Recommend highly! Thanks All!!! read more

Dr Sim is a miracle worker. Dr Sim retreated a very problematic old root canal for me and was able to save my tooth. Amazing bedside manner, painless procedure, and excellent results. A++++++++ read more

Who would have thought I would be giving the Dr. who gave me a root canal a 5 star review? Strange but yep...I'm doing it. Here's the low down. Started having severe pain in one of my teeth last April. I go into the Dental Salon and tell them what I'm feeling, they do some tapping, take an x-ray and they pretty much tell me it sounds like I need a root canal. WHAT?!! NO!!! I call their referral's office...Dr. Sim and schedule a root canal. :( Well a couple of days later my tooth stops hurting...so I cancel the procedure. All is right with the world again. :D End of August comes and umm I start seeing a bump appear on my gums right near the tooth that was giving me trouble. I do a little internet searching and ACK I think I have an abscess!! So Monday morning comes I call Dr. Sims office again and schedule a root canal. The soonest they could fit me in was something like two weeks out. Okay, fine. The next morning I look in my mouth and the abscess has gotten a bit bigger. What the heck is thing going to look like two weeks from now? So I call Dr. Sims office again and tell them about the abscess. Yeah I left that part out the day before. So the receptionist makes some calls, calls me back within 5 minutes, I swear it was more like 3, and says they had a cancellation and if I could be there in 2 hours. EEK! It was weird but as soon as I walked into their office I felt my stress level drop a bit. They were really nice and mellow there and it made me feel...mellow. I talk to Dr. Sim and explain what was going on, they do an x-ray, he explains what he thinks happened to my tooth and gums and he explains what he is going to do. There was just something about his voice that made me feel like it was going to be okay. I get asked if I want to see a movie during the procedure. Sure...but I doubt I'll be able to concentrate...I am getting a root canal after all. Look at the list of movies "Die Another Day." uhh, no thank you. Yay, Toy Story 2! My mouth is numb, he starts to get to work and I swear within 2 minutes of him working on my mouth I am totally engrossed in the movie. I love Pixar. Sigh. Unfortunately, I'm not even half way into the movie when he's all finished up. :( Since I had the abscess it had to be a two part procedure so he promised I could watch the rest of the movie on my next appointment. I get sent home with a prescription for Ibuprofen. That's It? No killer pain meds? Uh oh. I go get my prescription filled. Take a pill and wait for the pain and...nothing. No pain. All I felt was the itchiness and tingling of the Novocaine wearing off. Weird. I go back the next week for the second procedure and this time I am walking in footloose and fancy free. If I survived the first part this will be cake, right? It was. I get to watch a bit more of Toy Story 2 but still not all of it. Grr. Get sent home with my care instructions and that was pretty much it. I swear I felt more pain getting a crown put on. I plan to have all my root canals done there!! Now I just need to rent Toy Story 2 so I can finally watch the rest of the movie! read more

No one wants to visit the endodontist so the fact that I'm (along with many other yelpers) am giving Dr Sims a 5 star rating must mean he's pretty awesome. I'd like to give Dr Sims a billion stars just for telling me I don't need a root canal, which I thought may be necessary to get rid of my frequent headaches. However, he deserves a zillion stars for the time he spent with me trying to figure out the cause of my headaches. After taking a look at my teeth and quizzing me about what's going on in my life right now Dr Sims mentioned that I may just be grinding my teeth in my sleep. He told me what kind of disposable nightguards to buy on amazon and even took the time to tell me which packet on amazon is the most affordable. His office also followed up 2 weeks later, just as they had promised, to see if the nightguards were helping at all. For those concerned (thanks)...they are! While Dr Sims was my favorite of the few people I met in his office, his assistant gets kudos for being patient while trying to xray what may be the smallest human mouth ever (or so I"ve been told by my dentist's office). Parking in this area can be a pain, but the building does have a valet parking option. I hope I don't ever need a root canal, but if it happened at least I'd feel comfortable going back to Dr Sims! Just make sure you're calling the correct Dr Sims since there's another dentist by the same name on Clark street. . read more

Dr. Sim is top notch. Expensive, but top notch. I came to him to have a root canal retreatment. It seems that my root canal from 10 or 11 years back had a recurrent or ongoing infection that nobody had noticed in all that time because none of my dental x-rays were down to the root. Of course, since I had no nerve in the tooth it was painless to me and I would never have known. I searched yelp for a well regarded endodontist and found Dr. Sim. During my consultation, Dr. Sim took some X-rays and went over all of the options. He was very, very thorough. I decided to go with the somewhat conservative option of retreatment (the more conservative option being ignore it and hope for the best). The retreatment is in two parts. He goes in the first time cleans everything out, makes sure there is nothing going on that wouldn't show up on an X-ray like a fine crack or unnoticed root branch, fills the tooth with a temp filling, and gives you a prescription for pain. The pain was not bad, although, as promised by Dr. Sim, it did hit the third day. It was much more a sense of discomfort than pain. He called to check up on me the next day, too. very nice. Two to 3 weeks later you return and he cleans out the tooth again. Assuming everything has gone well, he'll send you off to your regular dentist to get a filling in your crown. Everything was very easy and not scary. The only thing I would change would be the Novacaine shot. His was not the most gentle I've ever experienced, but since everything else went so well and he's so nice I'm prepared to let it slide. Another bonus am going to Dr. Sims is the very lovely, kind, and patient Renita at the front desk. She is super nice when you are a super annoying patient like I am. Dr. Sim is lucky to have her. read more

Dr. Sim has been my Endodontist for 20 years. He is a perfectionist, very patient, professional, kind, smart, and honest. A few weeks ago, I had a root canal, once again, Dr. Sim saved my tooth. I am obsessed with my dental care! Dr. Sim reviewed my X-rays, explained in detail what was wrong with my tooth, what his plan will be, how long the root canal procedure will take, and made me feel very comfortable. He educates his patients! Dr. Sims' office is very clean and Covid compliant. Dr. Sim made me feel relaxed in fact, I almost fell asleep while he was doing my root canal!! Dr. Sim also made sure I knew about caring for my mouth after the root canal. I was given a prescription for a few Iburporphin however, I did not take any because, I did not have any pain, infection, after my root canal. If you need a root canal, please, do not trust your teeth to anyone, except Dr. Sim!!! Dr. Sim is the absolute best in his professional field. I have referred all of my friends, coworkers, neighbors, and family to Dr. Sim for a root canal, they were all very pleased with their root canals too!! I had an overall WONDERFUL, RELAXING, experience!! read more

Being almost obsessed with my own dental hygiene I never thought I'd need a root canal. Oh well...here I am standing at his office with a referral slip from my general dentist. The experience at Dr Sim's office was smooth, painless and I'd say relaxing! He was very thorough when it came to go over my x-rays and what was going on with my tooth. Once I got fully numbed (which can take me a while), the procedure went by like a breeze. I was kind of fascinated with the quiet communication/coordination between him and his assistant. Like a well oiled machine. I had no discomfort of any kind the hours and days after my visit. So no pain killers or Advid needed! I won't say I can't wait to go back, but if I ever have to, I will worry-free. read more

I had such a great experience here. Dr. Gabriel explains it all and my root canal was painless. I did get antsy but that's just me. I lost the prescription given to me on the way home. But I did take Advil when I got home and woke this morning day after with no aches or pain at all. read more

Dr. Sim is not only a great dentist, but a highly ethical one. Call me a cynic, but dentistry and ethics are two words that I usually hesitate to include in the same sentence. (DISCLAIMER: I know that there are plenty of highly ethical dentists, but I've had so many try to fleece me over the years, that I tend to be more skeptical than most. Please don't think less of me for my one prejudice.) I went to Dr. Sim because I had a root canal that failed and needed to be retreated. At the outset, Dr. Sim was very honest with me when he told me that a retreatment had a 50/50 chance of being successful. I figured I'd roll the dice and see what would happen. He did the work and told me that we'd wait and see. Fast forward two weeks. . . I went in to do the follow up and Dr. Sim determined that the re-treatment wasn't going to work and that I would need to get an extraction. I was disappointed, but I appreciated him being honest. BRACE YOURSELVES, here comes the shocking part. . . HE REFUNDED ME MY COPAYMENT! I thought he was kidding when he told me that he was going to do that, but he told me he didn't feel right taking my money if his work wasn't going to hold up. . . I'm still in shock. . . it's good shock. . .but shock nevertheless. . . So. . .right now. . .I have to go back to my regular dentist (Dr. Shimoda see my positive review of him) to discuss my options. Though the thought of losing a tooth makes me sad, the fact that I was treated so kindly by an honest dentist, definitely softens the blow. read more

I've only been to Dr. Sim for a consultation so far, to determine if a problem tooth needed a root re-canal. The x-ray was not conclusive, but Dr. Sim was extremely clear when explaining my options and their ramifications. He also didn't push me towards getting the root canal (that he would perform), he just presented it as an option that might prevent future problems. The treatment rooms are really welcoming (lots of natural light) and the receptionist and assistant were friendly too. Pretty much the optimal experience as far as root canal consultations go. read more

When I went to Dr. Sim, I must have had at least 5 root canals that needed to be done. I have Seizures that made my Jaw lock for hours, and unfortunately broke a lot of my teeth so bad they needed root canals. So if you have seizures and are looking for someone who can handle that, this is the man to go see. I was deathly afraid of any injections to make my mouth numb before working on them, because when the last dentist did it, my jaw locked and the seizures came. However with Dr. Sim, he was very understanding and caring regarding my seizures and was more than willing to take on the challenge. He is exceptionally honest, trustworthy, patient, understanding and caring, professional and his pricing isn't bad either. I would defiantly HIGHLY recommend Dr. Sim. Thank you for everything Dr. Sim!!! read more

Needed a root-canal In and out in less than 50 minutes...wow that was fast, easy and painless. read more

Dr. Sim is great! I went to Dr. Sim to fix my failed root canal.He took to the time to explain the situation in easy to understand terms and lay out my options. He did a wonderful job fixing it. My standard dentist commented on his excellent work. I am very happy with the results, the office friendliness and Dr. Sim's expertise. Highly recommend. Also, love that he has 7am appointments so us working folks can flex it into our schedule. read more

Top notch. Modern, professional, instant digital x-rays. If you give a failed root canal another chance, this is the place to go. Ultra smooth procedures, I took a nap! You will know exactly what he is going to do and how much it's going to cost, no hidden fees. Retreatment of root canal (with new crown), so far so good. Saved me a bunch by avoiding an implant and getting more miles out of my tooth. Remember, most insurances don't pay for implants and saving your tooth should be the first choice. Highly recommended. read more

I am a dentist and a bigger chicken than any patient I have met in my 28 yrs career as a dentist. I have been referring patients to Dr Sim for many years and EVERY time the patient comes back telling me they had a great experience. So, when it came to who to go to when I needed a root canal, I knew Dr Sim was going to be my choice. When my appointment day came, I was so nervous the night before I hardly slept. When I actually sat in his dental chair, my heart was beating so fast I thought I was going to pass out-truly. As he gave me the shot I hardly felt anything, just a very little pinch. I started to relax just a little bit. He made sure it was very numb before he started. As he took away the decay, I felt the vibration but that was all-ABSOLUTELY NO PAIN- not even a minor twinge. I was able to relax enough during the procedure that I actually fell asleep! I could not believe it! I have never been able to fall asleep before in the dental chair, but it just goes to show that when someone is really good at what they do, even a big chicken such as myself can get through a root canal with no pain. Even after, I thought it was going to be really sore. I took pain meds , but I didn't need any more after that. If you ever get referred here by your dentist, or if you are looking for an endodontist, I cannot recommend Dr Sim enough. Thank you Dr Sims from the biggest chicken I know (ME!). read more

Gabriel Sim, DDS - Lincoln Park Endodontics - The big chicken himself with my hero Dr Sim! Thanks man. - Endodontists Near Me - Chicago, Illinois

See all

I had my root canal done here. I've heard a lot about the procedure beforehand, but I never expected it to be so painless. Dr. Sim was very nice, professional, informative and, above all, a great listener. He answered all my questions and accommodated me in every way. The procedure itself was over long before I expected. This was my first dental visit of any sort during which I experienced absolutely zero pain. Even my prescription for pain meds didn't have to be used. I had no residual aches or swelling once the Novocaine wore off. All the staff was friendly and the office was clean and well maintained. Truly a 5 star experience as far as dental work is concerned. read more

I'm not sure that I can add much to all amazing reviews about Dr. Sim. Everyone said wonderful things and they are all true! Perhaps I can empathize that Dr. Sim's strength in not only in his exepetional skills and vast experience. Dr. Sim is the most ethical and conscientious dentist you can imagine. He is a text book case of integrity and commitment to his patient's best interest as the most important factor in any suggested treatment plan. Dr.Sim is a rare case these days, I'm so familiar with some dentists Who up sell their patients unnecessary solutions and they weigh their profit more than the patient best interest. Not Dr. Sim! I can trust him 200% and I know that he advise each patient with each case with utmost care, time and empathy. I seeked his advise for major trouble on few retreatments and I was blown away and literally broke in tears with his most objective and careful assessment of every detail. He spared no Time to explain the situation and proposed solutions with most amazing bed side manners you can imagine for a dentist. He is so gentle and the retreatment on my badly infected root canal was so smooth and eventless. I have to praise his team as well. His assistant is so courteous, skillful, and professional. Renita, the most wonderful lady who takes care of the front desk and billing is also so pleasant and personable! Unlike other practices, she made exceptional efforts to return calls, schedule appointments for emergency and make you feel welcomed and appreciated. She recognized my voice from the second call and made me feel so relieved about my schedule, travel plans and billing matters. Kudos to Dr. Sim entire team and I will refer any family and friends to him with most confidence they will be in great hands in every department of Endodontics needs. read more

As others have pointed out, Dr. Sim is very thorough and will not do a procedure unless he feels it's necessary. Very nice office, and a very friendly staff. Highly recommended. read more

And I had to go back for yet another root canal. As always, Dr. Sim was really cool and took care of my problem tooth quickly and efficiently. This tooth was a bit complicated though b/c the decay was touching the nerve and making it severely painful. He found a way to get anesthetic into the nerve so that I didn't feel anything. read more

A few years ago my regular dentist told me that I had two teeth dying of resorption. This led me on a journey to fix my teeth. What I found was a long list of mostly scary, unscrupulous, unfriendly and greedy dentists in the city of Chicago and suburbs. I even came across one dentist who was operating without a license (his boss was on the list of top ten dentists in Chicago Magazine) and one dentist who referred me to his associate whose license had been revoked for five years for drug charges. I did come across a small handful of decent, skilled honest dentists and Dr. Sim is one of those excellent dentists. Dr. Sim looked at my teeth and he was very honest with me. He told me my two teeth were in very bad shape and he thought that the root canal would fail within a year. He suggested I pursue implants which I am currently doing. Dr. Sim was honest with me, he did not waste my time or money on a procedure that would fail. He gave up income by being honest with me and I find that most Chicago dentists would not do that. Finally, Dr. Sim and his assistant Renata were very pleasant to deal with and fees were easy to understand. If I need a root canal in the future, I'm going to Dr. Sim. read more

Had a terrible toothache. Worst of my life. I called Dr. Sims office and he took me even though he didn't have time. He's great at what he does. He explains everything clearly and gives you options. The staff is pleasant as well. No judgement like some places, just- this is whats wrong and these are your options. He is an Endodontist so he's Dr. Root Canal. You will actually have to go to another dentist to have the crown put on. The total cost for the root canal will be $1200 and it will take aprox. 2 appointments at and hour and 15 each. He gave me antibiotics and vicodin. read more

Dr. Sim called the day after my root canal (Saturday) to check and see how I was feeling. Awesome!

I was referred to Dr. Sim through my general dentist to get my first root canal. I was anxious about the procedure, but Dr. Sim was very thorough and informative of my options. He was calm and gave me a play-by-play throughout the whole procedure. It was also quick! Finished in less than an hour! I didn't even need to take the pain medication he prescribed after the numb feeling went away from the procedure. I highly recommend Dr. Sim. =) read more

I was miserable last week with a tooth ache and referred to Dr. Sim to check it out. They fit me in the same day I called (I was lucky) and after a thorough exam and also just talking to me and asking me what was going on in my mouth, he confirmed I needed a root canal. It was a painful procedure because I had infection, but Dr. Sim was so efficient and skilled. It was over quickly and he let me know exactly what to expect afterwards. I admit I didn't feel too hot for a couple of days, but now that the infection is clearing I can't believe what a difference!! No headaches and I can chew on the left side of mouth again. I would recommend Dr. Sim to ANYONE who needs a root canal. read more

I have seen way too many dentists and endodontists in my thirty-some years. I have seen good ones, and, unfortunately, a few bad ones. It is rare that I find one, like Dr. Sim, that I would recommend to my friends and family. I have had several root canals, but none were done as quickly or with as little pain as my recent root canal with Dr. Sim. He explained everything ahead of time, his staff was very comforting and professional, and I had a very short recovery time. Plus, when I ran into some problems with my insurance, Dr. Sim and his staff went above and beyond what was expected to help me through the situation. When it comes to pulling a root out of a tooth, I do not make recommendations lightly. But I highly recommend Dr. Sim. read more

I usually do not write reviews but I found Dr. Sim to be such a great dentist that led me to leave my impression on Yelp. I had a root canal done and he was great. He has a very calm demeanor and took time to explain each step of the procedure. Compared to my previous root canals, my experience with Dr. Sim was much more pleasant. For all of my friends and family, I highly recommend Dr. Sim. read more

Dr. Simm and his staff are absolutely amazing and so professional ! I came in for a root canal and have never felt so comfortable and relaxed. You guys are awesome. read more

Having a wisdom tooth suddenly go very bad late on a Friday afternoon made for an amazingly painful weekend. My dentist provided some temporary help, and recommended seeing Dr. Sim, who was able to see me first thing Monday morning -- which at the time merited a 5 star review alone. But he also handled the root canal extremely well. Incredibly clear explanation of what was going to happen, and what he found and the treatment procedure. Everything worked out perfectly and he inspired confidence in the process. read more

This doctor is the epitome of professionalism and class. He takes the time to give the patient a thorough explanation of the impending work. Then, he does the best work possible. I had a root canal procedure. Let me just say that the work he did erased all the hearsay I've ever had about root canals. The only bad news about Dr. Sim is that he works soley with Endodontic procedures. I could only wish he performed a full range of Dentistry and the world would be a much happier place. read more

Brilliant! I recently had a a root canal done here. His work was flawless and Dr. Sim phone a couple times over the next couple weeks to make sure everything was okay. Nice man and very professional! read more

Who the hell leaves the endodontist with a smile on their face after a root canal? Me, apparently. The entire staff is incredibly friendly and professional. Dr. Sim is very straightforward about how the procedure will go, and told me about common issues that might come up and how he would deal with them if they came up. He was very calming and made me feel reassured about the procedure itself. It wasn't very painful at all (and the novocaine shots, which are normally the worst part, were a breeze)! After the procedure, he gave me a detailed description of how it went, and what the next steps were (how sore I might be, what pain medications to take, etc.). The next day, he called me from his personal cell phone (it was a Saturday) to check up on how I was feeling. Hands down, the most enjoyable dental procedure I've ever had. Let me reiterate: a ROOT CANAL PROCEDURE was the most enjoyable dental procedure I've ever had. Bonus tip: Ask him about anything regarding the anatomy/physiology of teeth. The man is a genius! read more

The guy is masterful at what he does, and explained things to me very carefully and thoroughly. Though I hope I don't have any need to go back to him, I thought he was very skilled. He and his staff made what is scary a fine and friendly experience. read more

As someone already said in their review - who would've thought you'd give a doctor a 5 star review who performed a root canal on you?!? Well I agree....I never thought it either, but Dr. Sim is amazing. And, also like others have said, very ethical which is difficult to come by these days. Root canals are expensive and I had one dentist try to push me into getting one before they knew I needed it but not Dr. Sim. He did a lot of tests and even told me to wait a little longer to see if we could be 100% sure that a root canal was what I needed....I ended up having to have the root canal but in all honesty this experience wasn't as bad as my dental experiences leading up to this with another dentist. Dr. Sim carefully explained everything he was doing and what I needed to do next, etc. He even coordinated with my new dentist once I had my procedure making sure they had everything they needed for my crown etc. I can't say enough good things about Dr. Sim....after what I went through I'm just very grateful I had a skilled and morally ethical professional to do my first (and hopefully last) root canal. THANK YOU DR. SIM! read more

Amazing Doctor and staff! I had an emergency root canal and I could not have asked for better treatment and service from Dr. Sim. He took the time to explain each situation and was right on top of everything. I would recommend Dr. Sim and his staff to anyone in need of a good endodontist! read more

Horrible Infected Tooth, went nuclear in terms of pain, and Dr. Sim took my emergency call on a Sunday and got me in for an emergency visit on Monday. Better than just cleaning out the infection and getting rid of the pain, Dr. Sim spent the time to talk to me about a Plan A and a Plan B going forward with the tooth, the costs and the potential short term/long term outcomes. He also called me back twice that day (the 2nd time after 7:00pm) to see if I had any residual pain and told me he planned to contact my dentist about this problem tooth. Thorough consult. Depth of options. Follow-through, follow-through and more follow-through. I've had five root canals by five different people. No more. I am forever with Dr. Gabe Sim. read more

Root canals suck, but Dr. Sim is wonderful. This doctor is informative and personable, and has a gentle and efficient chair side manner. My initial procedure was fast and pain free. His staff is efficient and friendly. I'm very happy Modern Dental referred me to him, and would recommend Dr. Sim to a friend without hesitation. read more

Dr. Simm and his team are simply the best. I was experiencing a lot of pain and thought I may need a root canal. The team scheduled a consultation within 24 hours, and after determining that I did need a root canal, Dr. Simm did the procedure immediately (thankfully). He thoroughly answered all questions and put me at ease; I honestly don't know why root canals have such a bad reputation. The procedure was easy and was not more uncomfortable than a filling, and more importantly, I had immediate relief. Highly recommend. read more

I can't say enough great things about Dr. Sim. He was very knowledgeable, patient, and thorough. Dr. Sim explained the problem and went over all of my options and possible outcomes in great detail. He took the time to make sure that we made a treatment decision together that we were both comfortable with. The day after my procedure he texted me to make sure that I was doing ok and didn't have any additional questions. He is one of the best doctors I have ever been to. read more