Meet the Expanded Functions Dental Auxiliary (EFDA)

One of Cooper Moss’s dental assistants – Elizabeth – has taken advantage of the EFDA program at South Puget Sound Community College and has completed the state requirements to become an Expanded Functions Dental Auxiliary. Her commitment to quality dentistry and to continued growth within her field ensures that our patients receive the best that modern dentistry has to offer. In addition to her certification as a dental assistant and dental auxiliary, Elizabeth is also certified as an Expanded Functions Dental Assistants which is a nationally-recognized certification through the Dental Assisting National Board.

Elizabeth and our dentists work closely together to ensure the best care for each of our patients. Elizabeth is routinely involved in the completion of composite restorations when one of the dentists determines that utilizing a dental auxiliary will serve the best interests of our patients. To learn more about EFDAs, please see the additional information below the team bios.

Dental Assistant

Elizabeth completed both the dental assisting program and the Expanded Functions Dental Auxiliary (EFDA) program at South Puget Sound Community College. As part of the EFDA program, Elizabeth received extensive training in the completion of dental restorations. She joined the staff of Cooper Moss Advanced Dentistry in 2005.

In addition to chairside assisting, Elizabeth routinely completes composite dental restorations after one of the Cooper Moss dentists has prepared the patient’s tooth. Utilizing Expanded Functions Dental Auxiliaries at Cooper Moss Advanced Dentistry allows patients to more efficiently complete their treatment, while receiving the same high standard of care.

Elizabeth is also our workplace safety compliance officer and ensures that Cooper Moss Advanced Dentistry meets or exceeds all standards for patient safety.

Elizabeth and her husband have a young daughter and three spoiled Yorkshire terriers.

Let us show you how wonderful dental care can be.

Meet the Dental Assistants

Chairside dental assistants work closely with your doctors to give you excellent care with your comfort in mind. In addition to directly assisting the doctors, dental assistants also work in the areas of radiography and sterilization.


Leigh received her dental assistant training at Eton Technical Institute and has 25 years of experience in the dental field. She has been a member of the staff at Cooper Moss Advanced Dentistry since 2003. Leigh is the implant coordinator and works closely with Dr. Moss and the patients who undergo dental implant surgeries. Leigh is also the Invisalign® coordinator and works closely with Dr. Cooper and patients who are receiving Invisalign treatment.

Leigh’s favorite season is summer when she can enjoy outdoor activities with her husband and young son, including camping, fishing, and swimming. She is also an avid Seahawks fan.


“With a passion for beautiful smilies and dentistry, Manaka recently joined our restorative team after moving to Olympia in September 2017. Manaka graduated with a certificate of completion from the Assist to Succeed program in Anchorage, Alaska. Prior to being trained as a dental assistant, she spent time as a Personal Care Assistant, so caring and comforting patients comes naturally.

Manaka’s biggest joy comes from spending time with her husband and two young children.

Because of her family, Manaka strives to better herself everyday. She plans to further her dental education and pursue an Expanded Function Dental Auxiliary endorsement. We are very excited to have her on our team.


Tina joins our office with over 27 years of dental assisting experience.  She graduated from the dental assisting program at South Puget Sound Community College in 1990 and has spent her entire career in the Olympia area.

In her free time, Tina enjoys spending her time with her grandson and many animals.  She also enjoys swimming and gardening.


Sharron completed her dental assistant training in Louisiana. She has been a dental assistant at Cooper Moss Advanced Dentistry since 1996 and has taken on the role of lead assistant. Sharron’s favorite pastimes include hiking, gardening, and traveling with her husband.