Meet Our Dentists

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Dr. Leonard Umanoff

Dr. Leonard Umanoff

Doctor of Dental Surgery, DDS

With over 20 years of dental experience and degrees from two countries, Dr. Umanoff and his team have helped over thousands of patients. Compassionate and understanding care takes center stage for the doctor and his colleagues as their approach is very simple; treating the whole patient not just their teeth! Using cutting edge techniques and their signature patient care, you can be confident and assured that your smile is in extremely capable hands!

Dr. Umanoff’s passion and specialization is Implantology. This amazing procedure can restore a single tooth or even a full mouth in a short period of time. The leading implant dentist in Brooklyn Dr. Umanoff has extensive knowledge of placing dental implants and has performed over 6000 such procedures. It fact it remains his favorite procedure to perform for his patients!

Dr. Umanoff has perfected his craft of implantology and not only focuses on the placement of implants but everything involved in the process such as bone grafts, sinus lift, and final restorations. Through his vast knowledge and experience there is no one better to help you obtain the smile you always wanted.

In his free time Dr. Umanoff enjoys being outdoors and enjoying nature, reading, practicing yoga and kickboxing.


• Moscow State University of Medicine and Dentistry – 1995
• NYU College of Dentistry – 1999
• Second District Dental Society Member
• North East Regional Board of Dental Examiners
• ICOI – International Congress of Oral Implantologists member since 2009
• Zoom! Whitening System Certified
• American Academy of Implant Prosthodontics Member
• Pikos Implant Institute – 2012
• Master CEREC System Technician

Dr. Marc Adelstein

Dr. Marc Adelstein


Dr. Marc Adelstein, born and raised in Bensonhurst has been practicing Endodontics for over 30 years. He is a graduate of NYU College of Dentistry, where he also completed his training and residency for his specialty in endodontics.

Dr. Marc Adelstein is a member of the American Dental Association and the American Association of Endodontics. He has previously worked at three private office practices as the chief endodontist.

Outside of work, Dr.Marc Adelstien resides in Bronx, New York with his two daughters. He is an avid sports fan and enjoys following the New York Jets and Mets teams. Some of his other hobbies include listening to Rock and Roll music and spending time with his family.

Dr. Marina Milgrom

Dr. Marina Milgrom

Pediatric Dentist

Dr.Marina Milgrom has completed her graduate education and New York University. Dr.Marina graduated dental school with an honors in special patient care.

After receiving her Doctor of Dental Surgery degree, she completed an additional 2 – year specialty training program in pediatric dentistry at Brookdale University Hospital.

Dr.Marina takes pride in ensuring her young patients are comfortable throughout their dental appointments. Her goal is to have each child leave the office feeling proud, accomplished, and excited to return.

As a pediatric dentist, Dr.Marina believes that compassion and patience are two of the most valuable traits she can offer her patients.

Aside from dentistry, Dr.Marina’s hobbies include traveling and spending family time with her husband and their 2 sons. She resides in Brooklyn, NY and is excited to care for the young members of the community.

Dr. Silvia Calderon

Dr. Silvia Calderon

Cosmetic Dentist

Dr. Silvia Calderon is a general and cosmetic dentist providing people of all ages with the care and services they need to enjoy a lifetime of healthy teeth and gums. Born and raised in Miami, Florida, she earned her Bachelor’s degree from Florida International University before moving to New York City to pursue a career in dentistry.

Dr. Silvia received her Doctorate of Dental Surgery from New York University College of Dentistry, and went on to complete a General Practice Residency at NYU Langone Brooklyn Hospital (formerly known as Lutheran Hospital), a level one trauma center in Brooklyn.

Dr. Silvia, Cosmetic Dentist is also Invisalign certified, and bilingual – speaking English and Spanish fluently. Affiliations include the New York State Dental Society, and Second District Dental Society.

Dr. Silvia always takes a very personal and caring approach to her patients. Her warmth and gentleness help put patients at ease, and make each dental experience a pleasant one. She strives to create the most comfortable atmosphere possible, listens to the needs of her patients, and explains all treatments and procedures clearly.

Dr. Silvia strives for excellence and provides ultimate attention to detail in all of the services she provides, with a focus on cosmetic dentistry, prosthodontics, and dental anxiety management.

She is committed to providing the highest standard of care for her patients and enjoys advancing her skills with continuous education.

When she is not in practice, Dr. Silvia enjoys kickboxing, traveling, enjoying new cuisines, and exploring New York City.

Dr. Sofiya Khazanovich

Dr. Sofiya Khazanovich

Cosmetic Dentist

Dr. Sofiya Khazanovich is a general and cosmetic dentist who specializes in fixed prosthodontics. Dr. Khazanovich completed her Bachelor of Science in Biology as well as her Master of Arts in Adolescent Education at Adelphi University in Long Island.

Prior to entering the dental field, she worked as a science teacher for the New York City Department of Education. Dr. Khazanovich completed her dental training at New York University College of Dentistry, where she was a liaison for the American Student Dentist Association.

After completing her Doctor of Dental Surgery degree, Dr. Khazanovich went on to complete a residency program at Interfaith Medical Center, where she gained valuable experience in treating medically complex patients, as well as treating patients who require general anesthesia.

Dr. Khazanovich is a member of the American Dental Association, the New York State Dental Society, and the Second District Dental Society.

Dr. Khazanovich’s passion and interests lie in restorative dentistry, specifically the field of fixed prosthodontics and esthetics. She also believes that her greatest asset in providing outstanding care to her patients lies in her diagnostic skills.

When she is not practicing dentistry, Dr. Khazanovich enjoys spending time with her husband and their three cats. She loves to travel and has visited twenty three countries, with a goal to visit many more. Dr. Khazanovich also enjoys reading historical fiction and fantasy novels, trying new restaurants, and attending various cultural events such as Broadway shows and concerts.