Mercer Sydell Dental
Andrew Mercer, DMD:
Practice Profile Page


Mercer Sydell Dental
Andrew Mercer, DMD
Milton, DE













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: 8:00 am to 5:00 pm

Wednesday: 8:00 am to 5:00 pm

Thursday: 8:00 am to 5:00 pm

Friday: 8:00 am to 1:00 pm

Saturday: Closed

Sunday: Closed





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

Karen S. from Smyrna, DE (Source: Yelp)


Wow, such and amazing office! I am new to the area and was looking for a new dental office. Before I could find a dentist I had a dental emergency and called Mercer Sydell Dental.  I can not say enough about the professionalism, knowledge and care from The Mercer Sydell team. From the first call with Courtney to the amazing care and work from Madison and Dr. Sydell  this office is overall the best….

Katherine Miller (Source: Google)


From scheduling to final check out, the staff was kind and efficient. The hygienist was very thorough and very gracefully put up with my anxiety and low tolerance for having dental equipment in my mouth. Both the dentist and hygienist we’re also fantastic with my 6 year old and did a great job keeping her calm. We do not have dental coverage and really appreciate their membership program. Overall it was a great experience and I’m happy that we’ve finally found our family dentist!

Missy B. from Newark, DE (Source: Yelp)


I want to share an outstanding experience I had this week at Mercer Sydel Dental in Dover Delaware. First things first, I want to thank Ms. Rachel for outstanding customer service skills and assuring me that this was the place for me to receive adequate service and care. My second encounter was an extremely wonderful young lady named April who conducted my X-ray and prepared me for the doctor. Here is my testimony world. Customer service Outstanding, Dental office CLEAN , SAFE and extremely welcoming. Experience OUTSTANDING. At this office You will receive Professional outstanding care. Dr. Andy Mercer who was my Dentist had extremely professional CHAIR SIDE MANNERS. He took the time to explain X-ray and upcoming procedure to follow. Dr.Mercer proceeded to extract 3 teeth out my mouth 2 being wisdom teeth out of my MOUTH WITHOUT AN OUNCE OF PAIN. You heard me right NO PAIN. Might I add within minutes I kept asking him are you sure you took them out. WORLD I HAVE DISCOVERED AN ANGEL POSING as a DENTIST. Do yourself a favor. Get to this office FAST. This was my Greatest dental experience to date. My recovery time was even greater than my experience. I CAN NOT WAIT For MY NEXT APPOINTMENT. I have even convinced my Husband, Children and friends to come and join me on a quest to better our oral health. THANK YOU AGAIN DR.ANDY MERCER FOR MASTERING IN YOUR CRAFT. After to bad experiences with two other previous dentist Elkton md, and Bear Delaware you have have restored my faith and confidence in Dentist. Until Next time I will continue to spread the word about GODS ANGEL. Kind regards Yolanda E.

Pete Hessert (Source: Google)


Super friendly, respectful, and professional. From phone receptionist to dental assistant to dentist to checkout, always caring and compassionate. Highly recommended! Can’t say enough great things about Mercer-Sydell! Always excellent service with superior attention to detail and great personality to go with their business-minded services.

Jordan K (Source: Google)


I fell and broke my two front teeth while walking my dog a couple weeks ago. This dentist was out of network from my insurance provider so I was apprehensive to go. I could not have has a better experience . They called me to let me know they were running AHEAD of schedule and I could come in earlier. They took care of my insurance, completed my out of network reimbursement form electronically without me asking them to do that. In less than an hour they fixed my two broken teeth and they look better than before. Their office is super clean, the staff is super efficient, friendly, and extremely professional. I can’t recommend this office enough. Thank you for fixing my teeth!

Chelsea Elyse (Source: Facebook)


The front office staff is super friendly, the check-in process was easy, I spent virtually no time in the waiting room, Kristy was so kind and gentle during my cleaning, Adam answered all of my questions regarding future treatments and I really enjoyed and appreciated the payment plan they offer! Not only was my experience as a patient exceptional but the entire office provided all of this while upholding and maintaining COVID precautions. I will certainly be returning for future routine exams and recommend everyone join this practice. Thank you Mercer Sydell Dental!!!

James Wachter (Source: Google)


I’ve always heard horror stories about going to the dentist but I have to say that my experience at Mercer Sydell Dental was the total opposite. From the moment I walked in until the time I left I was treated like I was valued. All my questions were answered, I was given options for different procedures and the most important result is that I’ll have my teeth before I go on vacation. I definitely recommend giving them a call. Thank you for everything Mercer Sydell Dental.

Michelle Beachler (Source: Google)


I have dental anxiety and have not been to a dentist in years. The staff was very welcoming. My dental hygienist was amazing. She was sweet, gentle and very attentive to my anxiety. She made the experience very smooth and stress-free and actually has me not dreading my next appointment. Highly recommend.

Mike Young (Source: Facebook)


Been going to Mercer Sydell dental for a few years now and have absolutely no complaints. Staff is friendly and always smiling, very informative and knowledgeable, and they are all highly skilled at their jobs. I’ve never had a bad experience and I am sure I never will.

Roger Ramjet (Source: Google)


The hygienist was thorough and very friendly. Their precautions against COVID-19 were very good, although they missed out on opening the door for me when leaving, and it seems they use only surgical masks, not N95s–this is probably fine for the client but not necessarily for them. Close contact with staff is kept to the minimum and there is no contact with the public. Exam doctor was fine as well.

Tara Willis (Source: Google)


Hands down the best dental experience I’ve ever had. Came highly recommended by a friend and I was actually thinking about getting her a thank-you gift for the info! *Beautiful office with a genuinely friendly and knowledgeable staff. My hygienist today (Brandy A+++) wowed me as she pulled up an article concerning a thyroid condition I have and how it coorelates to my dental health and conditions I was currently experiencing. I had mentioned the thyroid condition on my new client forms and was pleasantly surprised that she took the time to review that information before I sat in the chair! My last dentist was such a nightmare- this office is a dream come true.

Jmdreams05 Morhan (Source: Google)


Everyone was very friendly and accommodating. Jennifer did an amazing job cleaning my teeth!! The dentist was very nice and did a very detailed exam not only of my teeth but also my entire oral cavity to check for anything unusual or bothersome. This was my first visit there since I am new to the area. I would highly recommend this dental office and all of its employees.

Adrienne F. from Coffeyville, KS (Source: Yelp)


I have not been pleased with many business’s since I relocated to Milford. I also had been with the same dentist for years and was very reluctant to try a new one. For the record.. I’m very picky and I hate germs! The staff at this Milton office has been absolutely wonderful so far! I’ve had 2 cleanings and yesterday recieved a new plate and partial. I will report again after they’ve been in for a while but so far these are the best looking and best fitting EVER! My doctor and her assistant are friendly, professional, on time, and have displayed an attitude of wanting to do their best work at every level of my care. The offices are clean and everyone I’ve seen has practiced great hygiene techniques. The ladies at the front I can’t leave out. They always have smiles and I always enjoy laighing with them!

Tara W. from New York, NY (Source: Yelp)


Hands down the best dental experience I’ve ever had.  Came highly recommended by a friend and I was actually thinking about getting her a thank-you gift for the info!  *Beautiful office with a genuinely friendly and knowledgeable staff.  My hygienist today (Brandy A+++) wowed me as she pulled up an article concerning a thyroid condition I have and how it coorelates to my dental health and conditions I was currently experiencing.  I had mentioned the thyroid condition on my new client forms and was pleasantly surprised that she took the time to review that information before I sat in the chair!  My last dentist was such a nightmare- this office is a dream come true.

Ron Lebeau (Source: Facebook)


My family has been going to Mercer Sydell for over 17 years. The staff is friendly (April!) they’re always happy to see you, concerned for your well being and take the time to ensure you fully understand what is going on. They always work to ensure you are aware of and on board with all treatment plans. Thank you!

Cynthia Hughes (Source: Google)


I called as a new patient with a problem and they got me in right away of which was impressive. I filled all there paperwork via there portal rather than sitting in the office for 45minutes before the appointment trying to get it done. Everyone at this office was very professional and friendly. They all made me feel very comfortable even with all the COVID precautions in place. I would highly recommend this clinic based on my first experience. And honestly I generally don’t like the dentist. Lol

David Jones (Source: Google)


I lost a crown and needed a crown replaced. I was able to get an appointment very quickly. The whole process was very pain-free from driving up and witnessing the staff following all covid rules to the point that I barely even felt the needle that I was given during the procedure . The whole staff was very caring and very reassuring. I would highly recommend this practice to anyone for dental work.

Robyn DelleMonache (Source: Google)


New to the area, I fractured a molar. When I called, the receptionist was helpful and understanding. Lucky enough to be fit in, I arrived to the pleasant office but didn’t spend long in the waiting room before being seen. The technicians, assistants and dentist were all wonderful, making an uncomfortable situation better than I could have hoped for.

Katrina Thomas (Source: Google)


From the second I called I was taken care of from beginning to end with the utmost care. 5 stars isn’t enough for how prompt, professional, friendly and customer service oriented the entire staff was about getting my young child in and accommodating him and I the entire way through! (Which truth be told, isnt always easy with my son.) Friendly, top notch, informative. They made the dentist office my sons new favorite place!! Thanks so much!

Tammy Payne (Source: Facebook)


I called on Thursday and had an appointment the following monday. Very friendly staff. Very little waiting time. Explained what they were doing every step of the way. Treatment and options clearly discussed and all questions were answered. I didn’t feel rushed at all. I would highly recommend. Five stars!

Monica Elkins (Source: Facebook)


I would like to take a moment to tell you how grateful i am of you… you truly are a God sent…. i have always had fear of dental work being done on me an have neglected my teeth over the fear an lack of money… you are very gentle an caring with your work…. you are amazing an you staff are very sweet… your office is very welcoming… an at home feeling…. thank you so much for all you do i would recommend any one with any dental needs to come see you.

Bob Adams (Source: Google)


My wife and I recently moved to Delaware and have not selected a dentist. After this experience, we have found the one. Everyone was attentive from the intake to the Dentist. As an aside the treatment rooms are light and airy and calming all at the same time. Dr. Mercer was informative and answered all my questions. I had a molar which chipped off a corner with an old filling. The numbing was painless and the new filling was great. My teeth seem to fit better together after the new filling. I felt that they really enjoyed providing you with a good experience and technically they are excellent.

Chris Kenney (Source: Google)


After retiring from 35 years in the dental field I am so happy and impressed with this office. Moving and finding a new dentist and hygienist for me was a tough decision and I know how an office should work. Front desk to hygiene to restorative gets an easy 5 star rating. Best crown prep ever! Thank you Mercer Sydell, Milton office.