First of all, I felt NO PAIN WHATSOEVER! Ro was extremely gentle and very helpful. She explained everything as she went and made sure that I was 100% Comfortable and Pain Free. I laughed in the chair, something I've never done. I HIGHLY RECOMMEND this office!!! The office staff as you walk in is VERY PLEASANT and puts you at ease. I absolutely love this office and the entire staff.
- Janet D.
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Been going to Duo Dental Group since they took over the practice. Always a pleasure. Staff is friendly, courteous and knowledgeable. Dr. Mullin & Dr. Mattarazo are the best! I'll never dread going to the Dentist again! And the dental hygienist, Rosanne is a pleasure and absolutely amazing! She is so wonderful at what she does. I have known her for years and she is a wonderful asset to the Practice!
- Doreen S.
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Very professional courteous kind and personal service. Always listens to my concerns and treats me with respect. I’m always impressed with outcome of dental work I had done it exceeds my expectations!
- Barbara T.
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I've been a patient of Dr. Mullin since he was at the NYU College of Dentistry. He is my absolute favorite health care professional out there. I mean, that's why I've followed him here to Duo Dental! But this practice is amazing! The front desk girls Karyl and Angela are kind and easy to talk to. They were able to accommodate me on an emergency quickly and easily. I highly recommend Dr. Mullin and this practice.
- Keri G.
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Amazing experience, from start to finish. The staff is so friendly and professional. I have never experienced anything like it. The dentist is patient,down to earth ,with great communication on plan of care. Definitely my new dentist. Don't hesitate, it's a hidden Jewel well worth the find
- K C.
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Great dentist office! Everyone is helpful from front desk to dentists! I’ve been to both offices (Denville and Union) and under the amazing hands of both Dr. Matarazzo and Dr. Mullins, and had good experience with both places and doctors. My husband comes here as well, and we’re always recommended this place to friends.
- Claudia S.
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The staff at Duo Dental is very professional, friendly and welcoming. All around wonderful group of individuals that greet you immediately with warm, smiling faces. Dr. Mullin is compassionate, and has a fantastic bedside manner. I am usually very wary of the dentist but Dr. Mullin makes me feel very comfortable and calmed my anxiety as he was able to answer all of my questions without rushing. I absolutely recommend Duo Dental group to anyone who is searching for kind and professional service.
- Doreen C.
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Took my 8 and 4 yr old for a cleaning. From the moment I walked in, I was greeted by name and my children were greeted and made extremely comfortable. The assistant walked through each step with both kids and taught the the importance of keeping their teeth clean. The visit went smoothly for them and they are excited to go back in 6 months for another cleaning. The entire staff, receptionist, all dentist assistant, as well as the Dr. Mullin, were phenomenal. One of the best experiences I have encountered in a very long time!!
- Samira A.
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The entire staff are wonderful! Dr. Mullin is very focused and his attention to detail is amazing!,,,,
- Celia P.
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New Patients & Emergency Appointments Welcome!

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