The Hygienists


Roxana Hinchcliff, RDH

Roxana graduated from dental school in 1998.  For the next four years she practiced dentistry in her home country of Peru.  After moving to New York in 2001, she worked as a dental assistant - assisting with oral surgery in a variety of dental offices including Windsor Dental Center.  Roxana realized at the time that she had a true love of dentistry and a desire to take her career to another level.

She returned to school to become a dental hygienist.  In 2009 she graduated from the dental hygiene program at Orange County Community College and returned to Windsor Dental Center.  In addition to being a registered dental hygienist, Roxana is also licensed to administer local anesthesia and nitrous oxide to accommodate nervous patients.  Roxana is bilingual in Spanish which aids the office in communicating with second language patients.  During her free time, Roxana enjoys spending time with her husband, three daughters and two dogs. 


Fabiola (Fabby) Juste-Tolbert, RDH

Fabiola attended Kingsborough Community College and received a degree in Liberal Arts. While attending KCC she worked as a dental assistant and later became the office manager for her sister’s dental practice for eight years. She developed a passion for dentistry within that time, and with the encouragement of her sister, she decided to pursue a dental hygiene degree. She later attended and graduated from New York University College of Dentistry in 2006 with a degree in Allied Health in Dental Hygiene.

Fabiola’s work background as a dental assistant and dental hygienist has supplied her with many years of experience, skills and understanding when working with people. In her spare time she enjoys spending quality time with her family and traveling.


Donna Demczuk, RDH

Donna Graduated from the University of Medicine and Dentistry as President of her Dental Hygiene class in 2005. Her passion and drive has orchestrated her to be the recipient of numerous distinguished academic achievement awards. Her leadership skills and professionalism were honored with the prestigious “Joanne Gurenlian Leadership Award”. Donna’s 23 years of dental experience have given her the ability to connect and understand her patient’s needs. She invests in becoming a health partner with her patient to develop an appropriate plan for achieving and maintaining optimal oral health and well-being.

She has been very enthusiastic in any dental prevention programs, and oral health seminars at local facilities, hospitals and schools. At UMDNJ she was on the strategic planning student advisory group. She has also participated in oral health segments on radio shows, a dental related television commercial, print work for UMDNJ and an actor for the dental videos. She puts her heart into her work and is very passionate about her profession.

Prior to entering the world of dental hygiene Donna was a CDA, RDA for 13 years working for a prosthodontist in New Jersey specializing in full mouth reconstruction.

On a more personal note, she has recently become a grandmother for the first time and loves spending time with her family. Her enthusiasm for the outdoors leads her to hiking, biking, kayaking, camping and fishing. She is achieving a personal hiking goal of becoming a Catskill 35er and aspiring 46er! She also loves to cook, is a fitness believer, grow her own herbs, and is an extreme couponer!


Maria Jiminez- Soto

Maria began her journey in the Dental Industry as a trained Dental Assistant in New York City. She has acquired over ten years as a Dental Assistant which gave her the knowledge and experience in the cosmetic spectrum of the Dental field.  Maria was inspired by close colleagues to advance in her dental career which led her to seek an education to become a Dental Hygienist.  In 2005 she decided to enroll at the Hostos Community College where she earned her Associates degree in Dental Hygiene and graduated in 2008.  Maria is also bilingual and certified in both nitrous oxide and local administration of anesthesia.  Maria brings professionalism, hospitality, and a genuine passion for treating her patients while educating them on the proper way to care for their teeth to improve and maintain a healthy oral hygiene. She has become known for having a soft touch when treating her patients. Maria has been a part of the Windsor Dental family for nearly two years where she has made new acquaintances with the patients that she provides service for. 


Kelli Tierney, RDH

Kelli began her career in dentistry in 1986 as both a receptionist and dental assistant. After several years in the field  she returned to college.  In 1997 she graduated from Orange County Community college as a Registered Dental Hygienist.  Kelli later returned to Hostos Community College to attain a certification  in the administration of local anesthesia and nitrous oxide.  She is passionate about educating her patients about their dental and overall health.

 Kelli has worked in a variety of dental offices as well as attended many continuing education courses throughout her career.  Her 36 years of dental experience have prepared her to treat patients of all ages.  In her free time she enjoys spending time outdoors with family and friends and babysitting her grand daughter.

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Windsor Dental Center
Steven P. Stern, D.M.D.
Aesthetic, Implant & Family Dentistry

Dr. Steven Stern of Windsor Dental Center is a professional dedicated to Excellence in General, Family, & Cosmetic Dentistry such as Dental Makeovers, Porcelain Veneers, Teeth Whitening, Crowns/Caps & many other dental procedures. Please come and visit Windsor Dental Center, in New Windsor, NY.


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