Sudbury Dental Smile Center
Ronnie Du, DMD:
Practice Profile Page


Sudbury Dental Smile Center
Ronnie Du, DMD
Sudbury, MA













A list of major dental treatments which I offer my patients:

Dental cleaning

White fillings


Inlays & onlays


Clear aligners

Porcelain veneers

Teeth whitening

Dentures & partials

Root canal treatment

Tooth extraction

TMJ treatment

Dental implants


Offers Even28 at-home™? No

Offers Even28 at-dentist™? No

Offers Invisalign®? Yes


Monday: 8:00 am to 5:00 pm

Tuesday: Closed

Wednesday: 8:00 am to 5:00 pm

Thursday: 8:00 am to 5:00 pm

Friday: 8:00 am to 6:00 pm

Saturday: 8:00 am to 3:00 pm

Sunday: Closed


Dr. Ronnie Du, DMD





Check out what some of our happy patients are saying about us:

Bill P. from San Francisco, CA (Source: Yelp)


Great professionals and support staff…competent, caring, efficient, accommodating and well versed in providing a safe, healthy covid free environment. Face shields, masks, gloves, protective gowns and plexiglass shields in office. Modern, up to date equipment, well maintained. Sanitized offices between patients. Requested music in office…no problem. Review of procedures and plans for future dental needs. It’s all good.

Geri Cook Keough (Source: Google)


The Front office staff is so friendly and accommodating, they always make you feel at ease, and welcomed. The dental assistants are fabulous and always do a great job! The Dr’s and Specialists have done fabulous work on my teeth, and my smile has never looked so great!! They deserve 10 stars!! Fantastic Team of People in a beautiful modern office!

Renee S. from Lincoln, MA  (Source: Yelp)


The best in metro west. I neglected my oral health for a while because i don’t enjoy going to to dentist at all. Dr. Du and staff caught me up on all my dental needs (fillings, crown, Invisalign, and I am now doing veneers). Dr. Du is an absolute protectionist and my teeth have never been in better care. I recommend her to all in search of a great dentist.

Barry F. from Sudbury, MA  (Source: Yelp)


I needed emergency Dental work early on a Saturday morning. My cousin had been going to Dr Du for years and told me there was no better dentist around. Dr Du didn’t hesitate to fit me in on a busy Saturday , but I was even more happy with how professional and competent her staff and hygienist were. The work Dr Du did was efficient and professional, and I will be switching to her office for all my future dental work. So happy to have found her.

BB O (Source: Google)


New to area needed a dentist. Office was as all reviews stated, friendly, knowledgable, and clean. They seem on top of Covid. I had one of the best exams learned a lot. Front desk person was super and watching her work was amazing not sure Ive seen anyone do so many things at once. Didn’t miss a beat and was the friendliest person Ive ever met. Really great office. Dr Du is a great dentist but also a smart person she has the best group of people working for her. Im really glad to be a patient here.

Wayne H. from Maynard, MA (Source: Yelp)


I spent a considerable amount of my life being intimidated and often disappointed by Dentists. Consequently, I avoided them like the plague for years. Then totally by chance, I happened upon Dr Ronnie Du, while searching out a much needed new dentist. It was the best thing that could have happened to me. She and her staff are truly gifted professionals, that genuinely insist that their patients have the best, most relaxed experience possible. I highly recommend Sudbury Dental Smile Center. They are, in my mind, simply the best!

John P. from Sudbury, MA (Source: Yelp)


Dr. Ronnie Du again deserves the best dentist around. She has treated both my spouse and myself this year with gum issues and has more than met our expectations. Her friendly and very competent staff coupled with her true professionalism makes the practice one of the best around. Any procedure done in the office is basically pain free, and we never leave with any concerns. Always a pleasure to go and feel better when we leave. Times for an appointment are so flexible and easy; truly always a great experience. Rosanne

Betty White (Source: Google)


Best dental practice I have ever experienced. I have a dental phobia and from the start I felt good about this office, Kathy who scheduled me made me feel so relaxed about going, the hygienist Katalina was just amazing very gentle and explained things as she went along. The best part is Dr Du she did not make me feel bad about not seeing a dentist in years, she did not pick my teeth apart but in the kindest way told me what was a priority. She was so gentle and friendly asked about my job , my family. This office is full of incredible friendly people I did not get every name but everyone who came by me said hello. While doing my paperwork I watched Kathy engage every patient coming and going she knew them all so well, all the patients were happy. It is the friendliest calmest office I have ever seen. It did not feel like the dentist. Dr Du has the warmest office ever and it makes sense because she is warm herself! I am actually not afraid for the first time ever to go back and this is good for me! Thank you Dr Du and everyone in your office. I do not like being on the internet either but had to join Google to write this review because a good dentist is hard to find Dr Du is the best! -S.L.

Leda B. from Danbury, CT (Source: Yelp)


Super sweet people and are professionals at what they do. The staff genuinely care about the benefits of their clients and do what is best in the long run which I appreciate. They are always booked Saturdays so that says something. Haven’t had an unpleasant experience and I always come out with a great clean smile. Quite a drive from home but well worth it.

Bob C. from Newport Beach, CA (Source: Yelp)


Dr. Du and her team are the best dental care professionals in the business. I have been a very happy patient and customer for many years. I recommend Dr. Du and her office, Sudbury Dental Smile Center, to anyone looking for a great dental experience and care provider. Bob C in CA & NH

Charles T (Source: Google)


Happy crew from the greeting at the door with light conversation while you wait to the transition to the doctor. Dr Ronnie Du is a very gentle, kind caring doctor . I had a bad experience I did not share with them. I had just been told in another local office that I needed a lot of dental work. Dr Du saw things but also was conservative, I can tell she does this for the love of the patient not just money. When I asked about some of the crowns suggested to me she said I could do them, but they could also wait. She showed me pictures and explained exactly what I needed “urgently” and what she would watch. Impressive. The hygienist I saw was very nice and thoughtful as well. She gave me tips on better ways to clean my teeth at home, They did not try to sell me fancy toothbrushes or push a lot of work on me. I feel very lucky and I am glad I went for a second opinion. I have now had the work done and just the best experience with Dr Du. She is the best dentist I have ever seen.

Jeaneane l (Source: Google)


Dr Du is a wonderful dentist. Her whole staff is always friendly and helpful. I feel at home there. My husband goes to the office just to visit and have a coffee sometimes and he says they are always so warm to him. It is just a lovely office. Today it is hard to find care like this where they do a wonderful job and also make every patient welcome like old friends. Very special group of people.

Joan Ryan (Source: Google)


My first experience as a new patient was a very comfortable experience. The staff was friendly, helpful and professional. Dr. Ronnie Du is excellent and the office is spotless with the latest equipment. I have had the good fortune of having Dr. Ronnie Du as my dentist. I trust her work and advice completely; all of her work has been outstanding. Her staff is friendly and dedicated to excellent care and kindness. I would never recommend another dentist.

Jeff 39 (Source: Google)


I’ve been seeing Dr Du since 2009 and have always been pleased. I’ve had extensive work from fillings to crowns to implants and her staff is both thorough and friendly. She proves dentistry’s a real art and her precision and skill is surpassed only by the care for her patients. Love your dentist? Absolutely. Thanks Dr Du and staff for caring for my health.

Richard P (Source: Google)


Dr. Du is literally the best dentist I have ever been to. The office has a very warm and welcoming atmosphere. Dr. Du is very pleasant, professional caring and competent. One other big plus if you need a crown she has the equipment to make them in the office while you wait. Another interesting aside Dr. Du has developed a distraction technique to make your Novocain virtually painless. Dr. Du has my highest recommendation if I could give her 10 stars I would. As an aside if you have fear of dental work this is the perfect place for you. Going to the dentist with Dr. Du is actually a pleasant experience.

Richard Wang (Source: Google)


I had a pretty complicated dental issue that required tooth extraction and bone grafting. Dr. Du was very patient explaining the whole process to me so that I felt comfortable. Her office was a peaceful place that made me feel relaxed. She and her staff were all very caring. The procedure went super smoothly. I strongly recommend Dr. Du to anyone who needs a good dentist.

Tahir Shirko (Source: Google)


Sudbury Dental Smile Office have been our dental office of choice for my wife (Yana) and I (Ted) in the past 15 years. Each time we saw Dr. Ronnie Du & her team we were met by utmost care, courtesy, and brilliant dental services. Thanks to Dr. Ronnie Du our teeth have never felt and looked better: she enabled us to have healthy, white, and straight teeth, which make us look many years younger; much better than a facelift. The office is clean, cozy, and conveniently located in Sudbury. The billing is fair and skillfully optimized to benefit from any insurance we might have. Dr. Du and her staff’s kindness and wonderful sense of humor make us feel pleased and relaxed like being with joyful friends. This office is the best dental office we have ever had in the past fifty years, and we feel blessed and grateful to have it. Therefore, we highly recommend it to our friends and neighbors.

Stanley C (Source: Google)


I have been going to Dr. Du since 2005 for all the dental care including teeth cleaning, fillings, crown, wisdom teeth extraction, and etc. She is very knowledgeable and easy to work with. She pays special attention to detail and always follow up after the treatment. My wife and my son also have good experiences with her as well. We also recommended her to friends who were looking for dentists, and they always provide positive feedback.

Hong-Woon Yang (Source: Google)


Since I moved in this town about four months ago, I have been looking for a dentist for my dental care. Initially my wife found this place and one of my daughters were examined as a patient. They liked the dentist who took care of my daughter and the staff and then recommended me to go there. During my visit as a patient, I felt that I was taken good care of and also was satisfied with the service they provided. In addition, I like their business hours, especially their Saturday schedule on every other week. I confidently recommend the Sudbury Dental Smile Center for anyone’s dental care needs.

Denise L. from Maynard, MA (Source: Yelp)


I referred my 90 year old mother to Sudbury Smile Center who broke a tooth.  Dr. Du took her immediately and took such exceptional care of her. The staff was so helpful and caring. They made the experience so painless for her and treated her with such respect.  My mom now has a new Dentist to care for her needs. Thank you everyone!!  Stay Safe.

Mark A. from Framingham, MA (Source: Yelp)


I have been a patient of Dr. Ronnie Du for the past eight +years and have been extremely satisfied with all of the dental services she has provided me with which have included fillings , crowns, tooth bondings and numerous cleanings done by her skilled hygienists. Last week I had my teeth cleaned by Cleo , a hygyientist of Dr. Du, She did an outstanding and pain free job as well as giving me helpful advice about flossing and taking care of my teeth. All of the work Dr. Du has done for me has been done correctly the first time around and has stood the test of time! I highly recommend Dr. Du and her staff to anyone who is in need of dental services!!! Mark Allinson November 2017

Happy Gal (Source: Google)


I moved here recently and needed a dentist from the first impression with just my phone call the front office staff was so nice. One woman in particular made me feel at ease when I arrived. The lady at the desk was so helpful and watching her do 5 things at once with a smile and somehow I felt not set aside! Everyone new patients by name, it is what is missing in most places you go today, The hygienist was incredible, informative, kind, explained everything she was going to do and why. Just Super friendly. Then Dr Du came in and was just as sweet and kind with me. They did not embarrass me over not being to a dentist in awhile, which is why I did not go back to my last dentist the hygienist and doctor ridiculed me. Here they just made me laugh a little and talked to me wanting to know me. It was charming, professional and warm. Im getting to know my new community and so many people when I tell them what an amazing experience I had there reply, oh yeah Dr Ronnie is great. I hope in time I call her Dr Ronnie too, for now Dr Du will do! Im so lucky to have picked her office she clearly cares about her patients and took time to find the best support staff Ive ever encountered. I cant stop talking about them! If your reading this and considering Dr Du’s office definitely go she is amazing!

Donnarae Rubin (Source: Google)


My experience with Dr Du and her staff was outstanding as usual!! Dr Du did a fantastic job with my crown. I had a little discomfort beforehand. Dr Du made sure I was comfortable. She’s a very kind person. I’m so happy I found this practice. My husband and I have been patients 10+ years. Dr Du and her staff are always friendly and ask about our grandchildren during every visit. They make the visit personal. This is a friend and family kind of practice. The care and professionalism maintains its excellence. I highly recommend this the dental practice. My teeth cleaning with Cleo was great as usual!! The entire staff is wonderful! Cathy was especially helpful with our dental insurance. My husband and I have been patients of Dr. Du for about 5 years now. She is a fantastic dentist. She really knows her “stuff”. She is a kind, gentle and sympathetic person. Her dentistry work is impeccable. Dr. Du also cares about people’s budgets. She tries to give the best price. The office has all the latest equipment needed and the environment is spotless. If you are looking for a dentist give Dr. Du a try. You won’t be disappointed.

Stacey Jones (Source: Google)


I cannot say enough good things about every member of staff at this office! I hadn’t been to see a dentist in a while and I was nervous, I was made to feel at ease, and the staff were extremely attentive and thorough. I also brought my 3 year old twins in for a check up and I was so impressed at how they helped my kids feel comfortable, they actually had such a great time there that they frequently ask when they can go back!

Cindy L. from Sudbury, MA (Source: Yelp)


Dr. Ronnie Du has such a warm smile and she is always full of positive energy. My teeth look so perfect and I can smile big again! The quality of crown and veneer is amazing, you can hardly tell the difference from the original teeth! (Dr. Du is the perfectionist.) Once you visit her office, you will love Dr. Du and all her staff from Sudbury Dental Smile Center. I strongly recommend her office to anyon

Taylor C. from Sudbury, MA (Source: Yelp)


Sudbury Dental Smile Center has an excellent staff to serve your dental needs. The front desk (Kate) has the best and most accommodating office manager, and will go the extra mile to maximize your benefits. The hygienists (Booma, Cleo, Cat, Sam) are all professional yet treat you as a friend. Dr Du is extremely knowledgeable about anything dental; the wall of diplomas should give you an idea of her background and practice. She’s also very approachable and will gladly offer unbiased advice. It’s one thing to have shiny teeth when you leave the dentist, but it takes a lot more to be comfortable and calm GOING to the dentist. Thanks you all!

Shannon S. from Sudbury, MA (Source: Yelp)


I have been going to Ronnie for about 18 years. It has been fun to watch her practice develop. I think she is the most caring and concerned dentist I have ever had, and also likely the most skilled. The office staff are great as well. Kathy has done a truly wonderful job in helping me with exploring some solutions for my issues. Great people!

Manfred S. from Medford, MA (Source: Yelp)


Who would love their dentist? Even drive 1/2 hour? Dr Du has been my dentist for about seven years. I cannot believe that I am the first to write a review about her on Yelp. Okay, I could have done it earlier, but better late than never. Things to know: 1. She doesn’t talk you into expensive procedures 2. Everything she put into my mouth standing strong (sounds kinky, doesn’t it) 3. She helped me improve my gums so that they don’t bleed any more 4. I don’t have dental insurance so I ask about pricing first 5. When I was in financial distress, she found cheaper, non-standard options to buy some time until I could afford the desired solution.

Robert Rubin (Source: Google)


I came in for a check up and the expertise and safety implemented is amazing! I received advice for some implants for this year as well including new payment and insurance options. This is the place to go for your families Dental needs! ———————————————————————————————————————- Appointment from 2 months ago. The Office and Staff are Excellent. The Dentists and Associates are very attentive and knowledgable. I highly recommend Sudbury Dental Associates.

Nate G-Man (Source: Google)


The lady at the front desk was professional and also very friendly. My hygienist was incredible and really thorough. I was disappointed not to meet the doctor it would have been nice to meet him (I think it was a him) or Dr Du herself. The office staff was incredible so I will be back and look forward to meeting the doctor. They do a really great job with their covid protocols I felt very safe. I highly recommend this office and Im glad I chose them.

Robert D. from Wilmington, VT (Source: Yelp)


Dr. Du without question is an exceptional dentist. Dr. Du is meticulous, knowledgeable and highly competent. Similarly the staff in her office including the hygienists, the dental assistants and even the office staff meet her high standards of excellence. Dr. Du does many procedures not offered in the typical dentist office. She also has the latest technology in her office. I needed a crown. The Dr. prepared my tooth and then using digital imaging, her input and a computer the information about my needed crown was fed into equipment in her office which then made my crown. A perfect crown was produced in about 90 minutes while I waited. She also offers laser treatments for the gums which I am scheduled for and Invisiline teeth straightening which I am also receiving.. The Dr. has an interesting technique of applying Novocain which makes it virtually painless. I asked her where she learned this and she told me it was taught to her many years ago by one of her mentors early in her career. In addition to her high level of competence the atmosphere in the office is welcoming, happy and actually fun. This atmosphere pervades the office. If you were feeling down when you went into the office you will feel uplifted when you leave. I can’t say enough good things about her and her staff. If I could give her 10 stars I would. I highly recommend Dr. Du.

Cameo D. (Source: Zocdoc)


My hygienist was such an awesome person; she explained everything that she was doing in terms I understood, as well as made down-to-earth reccomendations on how to improve my oral hygiene (I have my wisdom teeth intact, which makes brushing a little different). The dentist who came in to check my x-rays was incredibly down to earth and also made sure I understood everything I needed to about my teeth. Everyone is incredibly professional and kind here

Jacob L. (Source: Zocdoc)


It was so nice to have the pains in my mouth start to go away, and finally have someone tell me some solutions that will make my teeth once again acceptable and easy to live with.. and promises to take out the bad ones in a few days. Thanks so much. I already recommended you to a friend.

Jeff Cowboysfan (Source: Google)


Dr Du is a sincere, gentle doctor who gives a lot of time to her patients. She treated me like family, explained everything really well, eased my dental anxiety. I have had a few appointments now and the service and care is consistent. Everyone in the office is nice too just warm and relaxing. Glad I found her!

Len Sherman (Source: Google)


My wife and I have been coming to this office for almost a decade, ever since we moved into the area. The expertise and the service here is simply wonderful, and Dr. Du goes out of her way to ensure satisfaction. I truly appreciate the effort from all the staff. I’ve previously had the “pleasure” of being a patient at some dental offices, where it seems like the equipment is at least half a century old. This is certainly not the case at Dr. Du’s office, where they ensure to stay current. During my last visit I had a good number of questions about the recommended procedures and Angie – my hygienist, took the time, both explain and showed on on the screen what exactly was necessary and the reasoning behind the recommendations. Overall as pleasant of an experience as one can have going to the dentist.