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Current WyDHA Leaders


Mary Sandy, RDH, BS, MSDH

Dental Hygiene Instructor
M. S. in Dental Hygiene Education, University of Minnesota
B. S. in Community Psychology, Saint Cloud State University
A. A. S. in Dental Hygiene, Saint Cloud Community & Technical College
Certificate in Dental Assisting, Central Lakes College

Mary is a full-time instructor in the Dental Hygiene Department. She comes to Sheridan College from Minnesota where she practiced dental hygiene for 20 years in a private dental clinic in Fridley. Mary also taught dental hygiene part- time at Herzing University in Minneapolis for 4 years.  In support of our nation’s military, she spent free time in Minnesota traveling to armories and military bases providing dental care to service members as part of the military’s Deployment Readiness Program. Her teaching responsibilities at Sheridan College include but not limited to: General and Oral Pathology, Oral Radiology and Clinic. She loves to volunteer her skills as a dental hygienist with Give a Kid a Smile Day and traveling around the world providing dental care to impoverished populations through a non-profit organization, Global Dental Relief. Mary is a member of both the American Dental Hygienist Association and the Wyoming Dental Hygienist Association. 


Keshia Brinkerhoff, RDH, BSDH
Delegate for Wyoming

Secretary & Dental Hygiene Liaison

Keshia graduated from the Sheridan College Dental Hygiene program in May 2012 and then received her Bachelor of Science in Dental Hygiene in 2013 . During her time at Sheridan College, she served as both Vice President and President of her student dental hygiene association.  Upon graduation, she received a peer nomination for the Excellence in Dental Hygiene award as well as an academic achievement award from the Vice President of Academic Affairs. Keshia began her professional career in pediatric dentistry and has been practicing at the Community Health Center of Central Wyoming in Casper since 2012.  Keshia was selected to attend the ADA Foundation's 2016 Give Kids A Smile Community Leadership Development Institute in St. Louis, Missouri and was named a Give Kids A Smile Institute Ambassador.  Keshia coordinated and organized the 2013, 2014, 2015, 2016, and 2017 Give Kids A Smile Events at the Community Health Center of Central Wyoming and has received two Employee of the Month awards.  She has served the Wyoming Dental Hygienists' Association for five years in the roles of President Elect, President, Immediate Past President, Secretary, and ADHA Delegate and looks forward to promoting the profession of dental hygiene in the future. 


Joni Hamilton, RDH  

Joni Hamilton has been practicing clinical dental hygiene since 1997.  She attended Sheridan College for her dental hygiene degree and completed her B.S.D.H. from the University of Wyoming.

Joni has always been involved with ADHA and her state dental hygiene associations.  She has been President, Delegate, Alternate Delegate and presently serving in the capacity of Treasurer for the WDHA. She believes it is a vital component of being a quality healthcare provider to belong to your professional organization.  By networking and attending continuing education classes offered by WDHA, it has allowed continued growth, from educator’s, professional speaker’s and dental hygiene colleagues for her professionally.  In addition to professional growth, WDHA has allowed her to form friendships with some of Wyoming’s very talented and accomplished dental hygienist. 

When Joni’s not working at the profession she loves. She has gotten the travel bug the last couple of years, getting to visit Italy, Germany and England…Japan is the next big adventure.   Joni and her husband adopt older pups from the pound….thank goodness they live in the country.  Life is very good at the Hamilton’s.  GO WYO!

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Taylor Brinkerhoff, RDH
Alternate Delegate for Wyoming

Board Member At Large 

Taylor has found her calling in the dental field. She started her career 6 years ago as a dental assistant at a pediatric dental office. After several years as an assistant she decided to transition into dental hygiene school at Sheridan College. After two years as a full-time student she then went back into the dental field primarily at a pediatric dental office with some fill-in work at a general dental office. While working in pediatrics she was able to use her skills to perform thorough cleanings, provide accurate notes, and educated both the patients and their parents on proper dental care. She was also able to provide the public with education in classrooms and daycares around the Sheridan and Gillette, WY area. While in Hygiene school her skills and overall understanding of oral health were expanded vastly. She was lucky enough to be a graduate of the Sheridan College dental hygiene program in May of 2018.  After becoming a licensed dental hygienist she began performing hygiene and assisting duties at a new pediatric dental practice called Gillette Pediatric Dentistry. Her favorite part of working with kids has been being able to make a positive dental experience for each and every one of her patients. She also prides herself on educating her patients accurately, compassionately, and professionally. When able, she loves to help out with GKAS and public health events in Wyoming. She is excited about her future in this field and the patients and professionals that she can help. 

She is very excited to be the new member at large for the WDHA as well as the alternative delegate for the state of Wyoming. She firmly believes that we can do great things for our profession if we help one another. She hopes that she can help unite dental hygienists in Wyoming and encourage involvement within their local communities and WyDHA community. She looks forward to meeting as many Wyoming dental hygienist as she can and learning from their great careers. 

"Coming together is the beginning, Keeping together is progress, and working together is success" - Henry Ford

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Crystal Spring, RDH
District X Trustee

Crystal Spring, RDH, BSDH, LAP Crystal was born and raised in a small town on the Ft Peck Indian Reservation located in the North East corner of Montana. She graduated with an associates degree in dental hygiene from Sheridan College and a bachelor’s degree in dental hygiene from the University of Wyoming. Crystal has a limited access permit and works in public health settings as a clinical dental hygienist. She contracts with the Ft Peck tribes, working in school-based clinics, she also works in nursing homes and assisted living and last year cofounded a nonprofit (Smiles Across Montana) that sees students in school based mobile clinics. She has been practicing dental hygiene for over 20 years (general practice, periodontal offices and the last 4 years in public health). Growing up in an area of extreme poverty, having a brother with developmental disabilities and family living in nursing homes were all a catalyst of her passion for public health. She values ADHA and all that they do for the profession of dental hygiene and the enhancement of access to care across our nation. Crystal lives in Bozeman Montana with her husband of 20 years, Ty and their two boys Bode (16) and Rafe (12). She is a rodeo/roping mom and wife. Her boys keep her busy year-round with rodeo, basketball, skiing, boating and life. She is a “people person” and loves her people. She enjoys reading, running, dancing with her girlfriends and spending time with her “people”. Becoming the District X trustee has been an honor and she looks forward to the next two years on the BOT.

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Sarah Henderson, RDH 
Immediate Past-President 


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