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CoronaVirus COVID19 Update:


Please read this message entirely.

We have invested heavily in Covid-19 precautions and technology. Please read the 'Covid Precautions' tab in the menu bar to see what those are.

If you do not have an appointment please do not make a personal visit to the office, you will not be seen. 

We reopened since June 8th for regular cleanings, and treatment.

General questions should be sent to our office via email

We are still accepting new patients and families and we can also be reached on

978-369-5700 if you need to speak with a member of staff.


Our office is constantly monitoring the COVID-19 situation and how it pertains to dental offices, our community, and your care.

We have been monitoring COVID-19 since it first appeared in China, and we have been preparing for how it could affect your care and our community since January. While we are following ADA, CDC, and state health guidelines, we have set our standards above these guidelines to ensure the safety of our patients, staff, and community.

How does this affect your visit?

We are reaching out to all patients with confirmed appointments to pre-screen any issues in advance of patients coming to the office.

We are requesting that any patient with any signs/symptoms of cold/flu/covid, to not attend the office, and call us to discuss in advance over the phone (or via email). Or if you have been around any Covid positive or Covid suspect patients please do not come to the office. 

Symptoms include, but are not limited to, fever/chills, cough, sore throat, sneezing, gastrointestinal upset, or fatigue.

Do not visit our office if you have any of these symptoms.

Simply call or email us to discuss. In addition, if you have these symptoms you need to self isolate with these symptoms and contact your physicians office, by telephone, for further medical advice.

Any patient with these symptoms we are asking to stay away for 4 weeks. If you have been confirmed as having COVID-19, or being around a known COVID infected person, please advise our office, again, by phone or email, not in person.

If you have been to a 'hot-spot' affected region, or associated with anyone with COVID-19, or have travelled recently, you need to address this with our office in advance of your visit by telephone.

Prior to your visit:

You will receive a text message, (or email if prefered) with a pre-screening covid questionnaire to complete prior to coming. Please use your LAST NAME only and date of birth to enter your file. Once complete it automatically uploads to our system.

Your visit:

Patients can text us on arrival at 978-369-5700. You may opt to wait in your car, take a seat outside or take a seat in to the waiting room. You can call/text us to advise us you are here and where you prefer to wait. We will let you know once ready.

Additional Precautions:

Once in the clinic while we are following the advise of the CDC, ADA, etc we are also taking extra precautions for your safety. These include:

  • Each patient will have their temperature taken with a disposable thermometer. If you have a fever, you will NOT be seen. This is to ensure the safety of our patients, staff and community. 

  • Please wear a mask to the office, and keep it in place until instructed to remove it, once finished please put your mask back on. 

  • Each patient will rinse with 1% hydrogen peroxide for 1 minute prior to being seen, this has been shown to be effective against Coronavirus.

  • Procedures will be carried out minimizing or eliminating aerosol production.

  • We are are disinfecting the door handles and anything touched, per each patient visit.

  • We ask patients not to congregate at the front desk or interact with other patients and maintain a safe distance as they would otherwise in public. 

  • Please do not bring others with you for your appointment.

  • All toys, magazines, newspapers etc, have been removed from the waiting area.

  • Staff themselves are also being screened prior to coming to the office, and while at the office, before seeing patients.

  • Our staff will be wearing masks with up to 99.97% filtration. Again, much higher standards than what is recommended, for all procedures. 

  • We have invested in the installation of a HVAC system which hospitals use. This system is an ionizing UV device thats kills and removes airborne bacteria and viruses from the air. This system can ionize airborne particles which are then removed more efficiently with a polarizing electrically charged filter. 

  • Payments will need to be made at your visit with your clinical staff while in the chair. If you wish to pay by check or cash please bring this with you and leave with your clinical staff member.

  • All administrative work will be completed remotely at this time. Any insurance questions, need to be addressed by your insurer, whom you would need to address those questions to. 

  • Please email us in advance copies of any new insurance cards etc so we can update your account and bill the relevant insurer under the correct plan ID number. Having up to date insurance information is the responsibility of the patient.

These measures, go above and beyond what is recommended and what you would experience going to a doctors office, or hospital or even a store. But let me assure you our whole team is alert to the situation and we have been for some time. We are a small office, our staff are now, and always have been, trained to a very high standard of care. We deal with serious diseases and infections every day, not just recently but we are focused on helping the community efforts against COVID-19. 

Lastly, the best way to prepare for this outside our office, is to follow the state and CDC guidelines, wash wash wash.... your hands with plenty of soap and water for 30 seconds, we cant stress this enough. Minimize social interactions. Avoid crowded situations, get plenty of sleep and fluids, and avoid touching your face, mouth, and eyes. Wear an N95 mask, when in proximity to people. 

If you have any concerns or wish to speak to us, please feel free to contact us to discuss. We understand your concerns and any fears you may have, we are here for you and will try to accommodate you to the best of our abilities during this time. If you have an emergency outside of normal business hours please follow the instructions on our phone number (978) 369-5700 to reach me.

Dr Madden



We are a dentist owned and operated dental practice located in historic Concord Massachusetts. The practice has been in place since 1944, offering premier dental services to our patients. 

We offer general, prosthodontic, and periodontist specialist dental care. 

We offer dental services from routine dental examinations and hygiene visits, through a full range of simple to complex restorative, prosthodontic, and cosmetic treatment solutions. We also offer Invisalign, a clear brace orthodontic solution to help fix crowded or badly positioned teeth to give you a better smile, and improve your oral hygiene. 

The practice recently underwent significant renovations to now offer the latest in low dose digital x-rays, dental software, intra-oral camera's, and the worlds quietest electric dental drills for a more relaxing dental experience.


Parking is available at our practice, and we are also located adjacent to Concord Commuter Rail Station.


We welcome new patients, and can offer a second opinion if needed. 

We are unique in that each treatment room has its own completely independent isolated air treatment system. This technology kills airborne viruses, bacteria, mold, dust and pollen. Each room will be all yours, not shared with any other patients or their air!

COVID-19 Technology, PPE, & Infection Control

Firstly, please view the pop up Covid message in its entirety to get familiar with the processes in place.


Air Treatment System:

Our office has made a significant investment in an air purification and sterilization treatment system which helps remove viruses, bacteria, pollen, and dust from the clinical air as well as smells and odors. These are similar to systems installed in hospital operation theaters. Each clinical room has its own, fully independent, climate controlled, and isolated air supply and purification system. Your air is not shared with other patients.


Every cubic inch of air in the office is treated and separated from other rooms. All office air passes through a polarized electrically charged custom filter to help remove these charged particles, while at the same time treating the fresh air coming back out with UV light, and ionized particles. The ionized hydroxyl ions are released into the air and destroy viruses, bacteria, and pollen. Please see video to explain the process. 

Each system can purify up to 1,000 square feet of space, we have 6 times the capacity even at maximum tolerances in place. Like I said, we take your safety seriously. 

PPE (Personal Protective Equipment):

Our staff are fitted with surgical grade PPE and are equipped with masks which have up to 99.97% filtration which are much higher standards than that recommended by the American Dental Association, OSHA, and the Mass Dental Society. In addition our staff have been supplied with surgical gowns and face shields. 

Practice Software:

We have also invested in practice software to allow our administrative staff to work remotely and make your dental experience as streamlined, safe, and efficient as possible by completely eliminating the need to visit the front desk in the traditional fashion.

We also provide medical history forms along with other administrative forms electronically, including via text message. All of this is to prevent the public touching things.

Touch-less Payment:

Touch-less payment can be made via text message also. Also, tap-to-pay, and Apple pay, are available also a pay terminals. 

You can text us when you arrive and theoretically not touch anything within the office if you wish. Our waiting rooms are only for reserved patients, they are not crowded allowing safe space between people. You may also opt to wait outside and enjoy the gardens and relax until we call you for your appointment. You will only need to meet with your clinician team wearing PPE, you do not have to meet with front desk or administrative task. It is that easy!



Routine Exams


Enjoy routine dental examinations with the latest digital xrays with 40% less radiation, dental software, and intra-oral photography allowing you to see, what we see!

Dental Fillings


We explain to you the pro's and con's of each material and can provide other options also.

Cosmetic & Prosthetic Dentistry


We can provide many options for missing, discolored, crowded, spaced, and unesthetic teeth. We have many options for crowns, and we believe in explaining the pro's and con's to reach the best decision for your smile.


We have a local certified Master Technician nearby, we never send our work overseas. 

Isolated Clinical Rooms


Each room has its own independent climate controlled air supply system with built in air filtration that kills airborne viruses, bacteria, mold, and pollen. This ensures that you do not have to share the same air supply as other patients. We believe this is important for your safety and comfort. 

Gum Disease Therapy

Our office has a Board Certified gum disease specialist in house. A periodontist is a specialist that treats gum disease and is able to offer surigcal and non-surgical gum therapy.


Our hygienists have years of experience, this together with the latest technology, cleaning instruments, and digital x-rays provide you with a comfortable reassuring experience and 40% less radiation exposure than other digital x-rays. 



We can provide implant secured dentures for a more confident bite and smile. We have many options when it comes to dentures from simple to high end dentures. We also believe in only using local labs here in the USA.

Invisible Braces

We are experienced providers of Invisalign, the clear brace solution for crowded or unesthetic teeth. Call for a consult and see how your smile will look after treatment before you even start.



Dr. John Madden
DMD, BA. BDentSc. BS. 


Dr. Madden has extensive training in general dentistry as well as cosmetic dentistry and prosthodontics. He has been trained both in Europe and the United States. He obtained his DMD from Tufts University, and obtained additional post-graduate training in prosthodontics and cosmetic dentistry at Harvard University's School of Dental Medicine. 


Dr. Madden's main area of interest is in restoring crowns, bridges, implant restorations, and cosmetic dentistry. He has a detailed knowledge in restoring your teeth whether you opt for removable or fixed dental prostheses. He is currently an Assistant Professor teaching at Tufts University School of Dental Medicine where he has been teaching for the past several years.

Dr. Madden has previously served on the Executive Board of Tufts Dental School as well as being on the admissions committee. Dr Madden was also appointed by the Dean of Tufts Dental School as the Chairman of Tufts Faculty practice. 

Dr. Madden works closely with our in-house periodontist and dental laboratory, as well as a select group of local dental specialists depending on your need. Dr. Madden believes in only using the best materials and most skilled Master Dental Technicians, all our prostheses are made locally and never sent overseas. In fact we can have patients visit our state of the art dental laboratory nearby.  

Dr. Robert Gyurko
DMD. PhD. 


Dr. Gyurko currently serves as Director of Periodontology at Tufts University School of Dental medicine.
Dr Gyurko is a Board Certified Periodontist, and obtained his Diplomate from the American Board of Periodontology. 
Dr Gyurko earned his DMD at Tufts University School of Dental Medicine. He has also received a PhD in Physiology from the University of Florida where he studied gene therapy. 
He is currently an Associate Professor in the Department of Periodontology at Tufts. 
Dr Gyurko's expertise includes non-surgical and surgical treatment of gum disease and implant placement. He has numerous scientific publications in his field and has lectured both nationally and internationally.
Having an in-house periodontist improves patient care by affording better communication, and we can provide a more extensive range of services offered under the same roof. This eliminates the hassle of our patients having to travel elsewhere, set up new accounts elsewhere, deal with multiple front desks, billing statements, and it also eliminates the need to arrange for records to be transferred, or worse still, have your x-rays retaken again. 


Our Address

Concord Center Dental

136 Sudbury Road,

Concord, MA. 01742

Tel: (978) 369-5700

Please note: NO marketing or sales solicitation will be accepted in-person, email, mail, or otherwise.

Opening Hours

Monday through Thursday  

08:00AM – 5:00PM

Friday By Appointment Only



Family Dentistry

Cosmetic Dental

Prosthodontic & Implant Dentistry

Teeth Whitening

Digital Dentistry