Dr. Sierra is not only an outstanding dentist, but a true testament to selflessness and effort. He goes above and beyond to take care of you outside of his workspace, whether providing you with the advice you need if you’re ever outside the country, or always being available (even outside office hours) to be at your disposal. Very appreciative I found a dentist like Dr. Sierra!

I love the staff here, but I love more having people care about what theyre doing so that I dont feel pain!!! Too many dentist offices have good dentist but dental assistants that hurt my gums with cleanings. Not here, you get the best of the best! Dr. Sierra knows his stuff and helped get my teeth to the healthiest and whitest that they have ever been! Everyone is incredibly knowledgeable and professional. Check in is always easy and I dont think Ive ever waited more than 5 minutes for my appointment. I can finally say I have a dentist (something Ive been afraid to commit to before).

Dr. Sierra is and his staff are amazing! I was suffering with pain from clenching and Dr. Sierra created a custom bite plate and over time my pain has subsided so much! I will now be getting cleanings here!

The people were very kind and genuine, and very gentle when doing cleanings... definitely great dentists

Dr. Sierra is a true professional and a master of dental care and artistry.His supporting staff are most helpful and maintain a clean and accommodating environment for all of their patients.Brook who is the office administrator and Linda doctors chief assistant make my experience smooth and hassle free.This is a caring operation and I am a most satisfied patient.

This man is a genius in dental! I had a lot of issues and he literally worked magic! I am 100% satisfied and recommend anyone to him! Im sending my whole family to see him!

Dr. Sierra and his staff are the best. They treat you with the greatest respect as a patient. They are perfectionist and want you to loo your best. Easy to find and a convenient location. I would definitely recommend this dental office.

Great costumer service, everyone makes you feel welcomed and comfortable to be there.Dr. Sierra is a great dentist, he does an awesome job fixing the teeth and has a great attitude with the costumers! I recommend him 100% 😁👍🏼🦷- Debbie F

I have been a patient of Mission Bay Dentistry for 20 years, and wouldn’t go anywhere else.Dr. Sierra and his staff, are knowledgeable and compassionate professionals, who will go out of their way to assure your dental needs, whether emergency or routine, are met.Rest assured, the cleanliness of the office and safety of all patients and staff are paramount.

Dr. Sierra is the best. He truly cares about his patients. His staff is always on the ball, they’re great with appointment reminders and follow ups.Lucky to have a great dentist close to home.

Ive only been with Dr. Sierra for 3 years but I can wholeheartedly recommend him to anyone considering a new Dentist. His attention to detail means he consistently provides the best service and best dental experience for the patient. Gentle, compassionate, and experienced are the traits that come to mind. - Huge accolades also for his lab folks behind the scenes who did a color match on a lateral incisor implant that surpassed my greatest expectations. Lastly, thank you Brooke at the front desk for making it a perfect experience at Dr. Sierras office.

I was late getting my teeth examined/cleaned because of COVID but felt totally safe in their office, and as always, had a great cleaning. I was also excited to show Dr. Sierra the results of his work with my Invisalign....I highly recommend him.

SinceI moving to Florida (Boca Raton) 2014, I became a patient of Dr. Sierra but then I moved to Fort Lauderdale. I was too lazy to drive up to see him which I can say it was a big mistake. I am back to being a patient and could not be any happier. His staff is beyond professional and accomodating. Dr. Sierras professionalism and honesty is above 5 stars.

Dr. Sierra got a new crown set for me. He makes sure you feel ok and are comfortable. He is very thorough and conservative in his approach. He took all of the proper precautions for Covid as well. Overall an excellent experience.

Very nice staff and Doctor. Friendly and welcoming. They did a very thorough job, best cleaning Ive ever had!

Dr. Sierra is very gentle and patient. He’s honest and does a great job. He takes his time with his patients and truly cares. Been going to him since I moved to Florida, about 6 years. If you are looking for a dentist, I would highly recommend him. I have a lot of anxiety with dental work and always takes his time and reassures me.

Great experience the staff was awesome and Dr. Sierra very professional and caring for his patients. Loved it.

We just moved to South Florida from the Philadelphia area and needed a new dentist, and had no idea where to start as there is a dentist on every corner in Boca Raton. Literally more dentists than churches. So I hit up the google, and read the reviews. Dr Sierra’s seemed to be the best, so we chose him. My 10 year old son went first and the hygienist and dentist both were very patient and kind, and even filled his first cavity and my son left saying it wasn’t that bad at all. I actually was hoping it would be slightly more traumatic so I could scare him into brushing better, but it was quick and easy! 😂 He said he didn’t even feel the novocaine shot at all.I recommend this practice and I am glad we found Dr Sierra, he’s a nice and funny guy and great dentist!

Dr. Sierra was able to see me about an emergency repair of a bridge. Everyone in the office was friendly and efficient. I was impressed with Dr. Sierras thoroughness. He went the extra mile by x-raying and cleaning the teeth involved. All for the promised price given by the receptionist. Ill definitely be going back.

Dr. Sierra is simply amazing! Not only is he a talented dentist who does a great job, he has a heart that speaks volumes about who he is. My father is on home hospice and Dr. Sierra actually came to his house to care for him. Who does that these days?? Nobody! I cannot speak highly enough about Dr. Sierra. A gentleman, an extremely respected and hardworking dentist, and a man with a heart of gold. G-D bless you!

Dr. Sierra is such a caring dentist & person. He has been my dentist for almost twenty years. Even though I have moved over the years further away, I refuse to to find another dentist closer to where I live. If you want a dental practice that treats you like family, then look no further! Visit Dr. Sierra!!

Dr. Sierra is an extremely intelligent and superior dentist. He and his staff are all very compassionate and super friendly. Since we have recently moved almost 45 min away we still travel the distance to him because of the professionalism and care he gives.Our family of four have been patients of Dr. Sierras for over a decade because he and his staff make us all feel really comfortable while office visits are a painless experience. He will always be there for you when emergencies arise.

Dr Sierra is amazing. His staff is just as great! I was new to the area and couldnt be happier. Great service all around.

Dr . Sierra is kind and gentle always...I never forget how caring a Physician he is... The staff is great too!

This Dentist and his entire staff are the best.

Dr Sierra and his very capable staff do excellent dental work in a very comfortable and friendly environment

We have been with Dr Sierra for 15 years now, and have never considered going anywhere else. He is simply the best. He and his staff will go the extra mile to help you out the very best they can. I can highly recommend Dr Sierra for anyone who is looking for a good dentist.

First time there yesterday and the staff and Dr Sierra are so nice! the receptionist is so sweet and so was the lady who cleaned my teeth (Debbie). Ive always hated trips to the get my teeth cleaned, but Debbie was very gentle. Dr Sierra himself is also nice and personable. Happy I found this place close to my home.

Dr. Sierra has been my dentist for about ten years. I have never needed any major dental work, but I have gone religiously for my dental cleanings twice a year. The dental hygenists do excellent work. I always leave the office with my teeth feeling truly clean. I recently changed insurances, and Dr. Sierra was able to work with me and my new insurance. Dr. Sierra and his staff go above and beyond for their patients, and I highly recommend him as a dentist!

Love Dr. Sierra and his entire staff. I have been going to him for over 16 years and wouldnt dream of going anywhere else!

My 99 year old great uncle has been a patient for many years and he loves the staff and Dr. Sierra so much that they are invited to his big 100th Birthday party!!!

Dr. Sierra is an exceptional dentist. My teeth, despite extensive work, by others, over the years, were deteriorating rapidly. The front teeth were noticeably crooked and discolored when I smiled.Patiently and with great skill, Dr. Sierra fixed all that. Today I chew better and I smile often.Thank you Dr. Sierra!Pat

Dr. Sierra is amazing. He is patient, caring and knowledgable. Nice and clean office. Helpful assistants.

The office is always clean and tidy, the staff are friendly and call me by my first name. Dr Sierra always has time for the little personal hi how are you touches. He is considerate to his patients and does a good job. No complaints in the 19yrs I have been seeing him.

Dr. Sierra and all of his staff are not only kind and caring but very efficient. They run their office in a very organized fashion. I highly recommend this dentist.

Dr Sierra and his staff are the best! Outstanding office with caring people. Keeping your teeth healthy keeps your body well. Cant say enough about the professionalism, on time, top notch office. thank you Dr Sierra!

Doctor Sierra is very professional and caring. The procedure was done on time and the staff was very friendly. Happy patient!

I recently was reffered to the dental office of Dr. Dennis Sierra. Im very skeptical when it comes to dentists, so I was a bit nervous going to an office Ive never been to. As I walked in, I was greeted by the front desk staff. They were very friendly, informative, and helpful. When it was time for me to see Dr. Sierra I was beyond pleased with his office and rooms, very sterile and clean. My procedure was smooth and painless. Dr. Sierra was concerned and communicative the whole time sensing my nervousness. After my procedure I was extermly impressed with my overall visit and his practice. From the front desk girls the moment I walked in to the procedure and follow up after my visit. I recommend this practice for anyone seeking a dentist, I found mine

Very professional staff. Appointment taken on time.

Dr. Sierra is a highly competent and committed dentist. Ive been going to him for years, and always have a good experience. A couple of weeks ago, I had an emergency and Dr. Sierra was just leaving the office, but cheerfully waited for me and fixed my problem. I would definitely recommend him.

I have never experienced a more caring, genuine and personal dentist more than Dr. Sierra. The service is amazing and the whole staff truly cares about their patients. Everyone deserves a dentist as incredible as Dr. Sierra.

Friendly atmosphere. Staff are really helpful. Dentist is caring and work well with children.

I love Dr. Sierra! He is very gentle and takes his time. I am a very nervous patient and he made me feel right at home. Great Great Great!!!!

Please to have found Dr. Sierra. He helped me with a troublesome crown, and my bite is better and pain is gone. For another issue, he also referred me to an endodontist so that we could make sure the pain was musculoskeletal, and that we did not do any dental surgery if time itself was the best medicine. I appreciate that very much.

I am from Long Island, N.Y anda snow bird. I find Dr. Sierra to be the best dentist l have ever used. I wished he practiced in Long Island!

Each time Im in this dentistry my expectations are exceeded. Wonderful staff!!

Dr. Sierra is professional, knowledgeable, proficient, and cares for his patients welfare. His concern for his patient health and appearance is primary concern. I can only praise Dr. Sierra and his professional practice and ethics.

Doc is with out question in Palm Beach and Broward Counties, He has more than once came to my rescue from substandard dentistry I have received in the past. He IS THE GOLD STANDARD and his Close Group of Specialists, are also The Same Ones At This LEVEL Of QUALITY, And I Know This Because I Got To Him From Them. His New Administration Team is AWESOME! D. Groobert

Dr Dennis is Great and he really takes the time to do a great job on your smile!!! Beautiful Dental Office, and cosmetic dentistry!

I have been going to Dr. Sierra for about 20 years and have been recommending him to people almost from the beginning. He is a very caring, experienced, and personable person and I feel certain you will be pleased both with him and his staff.

Amazing dental office! Super clean and the staff is very professional and friendly.

Excellent Dental Office. Friendly. Profesional. Great quality. Clean. Great location.

MY WIFE AND I HAVE BEEN GOING TO DR.SIERRA FOR OVER 10 YEARS AND WE BOTH ARE VERY SATISFIED WITH ALL THE DIFFERENT TREAMENTS WE REQUIRED OVER THOSE YEARS. HE AND IS STAFF ARE VERY FRIENDLY, PROFESSIONAL AND EFFICENT ! WE ARE BOTH SENIOR CITIZENS (75+) AND HAVE ALL OUR TEETH AND HEALTHY GUMS. GIVE HIM A TRY AND YOU WILL VERY SATISFIED ! BEN & ROSEMARY KRIEGER

Great experience and profesional,the doctor has a very soft touch. I trust him and his staff.

Dr. Sierra is a good dentist. Very caring about his patients.

Very knowledgeable dentist, very smart, experienced! So glad I chose this office for my dental needs!

Dr Sierra and the whole staff are the best!!! Im so glad to have him as my dentist!!!!

My entire family are patients of Dr Sierra and have been for a very long time. Hes honest and caring and I have always been happy with his service.

He is our Dentist for almost 20 years he is like family

Been with Dr.Sierra for many years. Excellent in every way Outstanding !!!!!!Sean Quilter

Always a good pleasure when I visit Dr. Dennis!

Great Dentist - extremely competent.

Dr. Sierra and staff rocks!👏👏👏😍🙏

Dr Sierra and staf are great!

Great and friendly staff!!

The best you can find !! everyone is friendly.

Excellent Doctor 👍 very professional