Joy Raskie, RDH

Director, Advanced Dental Hygiene

As the director of Advanced Dental Hygiene, Joy believes in a more hands-on and integrative approach with her continuing education courses. She lectures, conducts laser training courses and does in-office laser consulting. For the past 15 years, she has been practicing as a clinical hygienist in and around Denver, Colorado.  For over 12 years, Joy was head of the Dental Hygiene/Periodontal program, where she successfully implemented lasers into the hygiene program. Her passion for lasers has led her to obtain Fellowship Certification and 2 Associate Fellowship Certifications for the Diode laser through the World Clinical Laser Institute (WCLI). She is a member of the Academy of Laser Dentistry (ALD) where she obtained one of the highest degrees in laser dentistry, an Advanced Proficiency in dental lasers. She is among an elite group of 20 RDH’s who holds this certification worldwide. Joy is a member of the American Dental Hygienists’ Association and Colorado Dental Hygienists’ Association. Joy is deeply passionate about teaching and integrating her audience to make learning more fun. Her goal is to help everyone feel confident and ready to succeed after leaving her courses.

Joy is married with 2 beautiful Akita pups. She enjoys teaching spinning class, cycling, swimming and practicing yoga in her spare time.


Katie Stager, RDH

Associate Instructor

Katie is a clinical hygienist in Lone Tree, CO and holds a BS in Chemistry and BS in Dental Hygiene. Katie has been in dentistry 14 years; is head of the Hygiene Department for 3 offices (thus far); manages 9 hygienists and still practices patient care 2 days a week as a clinical hygienist. Katie has been using lasers for over 9 years and is responsible for training many RDH’s in regards to standard of care and incorporating lasers into their practice. Katie specializes in developing more productive hygiene departments and is an expert in coding, production and verbal skills not only with patients but as a manager of multiple offices/staff members.

Katie is married with 2 young daughters. She enjoys traveling and seeing the world; as well as spinning and working out.


Linda A. Hirce, RDH

Associate Instructor

Linda has over 40 years of oral care experience as a registered dental hygienist, an educator, dental resource for marketing firms, consumer web sites and study club coordinator. She currently works as a clinical hygienist as well as a professional advocate and brand ambassador for Arm & Hammer. Linda has been mastering and using lasers for the past 9 years. She is an Associate Instructor for Advanced Dental Hygiene with a specialty in fighting periodontal disease with laser as well as communication skills with patients. Linda currently is a member of the American Dental Hygienists’ Association (ADHA), Colorado Dental Hygienists’ Association (CDHA-Boulder component), and Liaison-Boulder County Dental Hygienists’ Assoc. She has received many awards over the past 40 years for her various outstanding community outreach programs; as well as sat on many boards throughout the years as President, Vice President and Treasurer; was a Colorado State Delegate to ADHA; featured in “Access” magazine and was a speaker for the Seattle Study Club and Jersey Coast Dental Forum.

Linda enjoys hiking with friends on the local mountain trails and leading senior volunteers in a charity knitting group.


Justine Kluesner, RDH

Kansas & Missouri Division

Justine is a full time clinical hygienist in Kansas City, Kansas. Her passion for learning and patient care lead her to the diode laser. Justine understands the bacterial role and the destruction caused by the immune response and the advanced technologies needed to improve the tissue. Justine is a big advocate for the diode laser. She has seen a positive result in her periodontal program after implementing laser hygiene on a daily basis. Justine is a passionate hygienist who likes to increase the standard of care and oral health for all of her patients.

She is excited to share her knowledge about lasers and help other dental professionals incorporate lasers into their daily practice.

Justine enjoys hiking, reading and spending time with family.


Andrea Tresner, RDH, BSDH, CDA

Kansas & Missouri Division

Andrea Tresner is a graduate of Flint Hills Technical College with an Associate Degree in Dental Hygiene and a Bachelor of Dental Hygiene from Wichita State University. She is also a graduate of Wichita Area Technical College in Dental Assisting.   Andrea has been in the dental field since 2001. She began her career as a dental assistant and worked in several offices in Wichita, KS. After 10 years in the dental field she made the change to teaching and taught full time in a dental assisting program at Wichita Area Technical College. She returned to school for Dental Hygiene in 2012. After dental hygiene school she moved to Kansas City and has worked in Public Health, Corporate, and Private practice. While in private practice, Andrea incorporated lasers into her periodontal program and was very impressed with the positive results she saw firsthand. She has been teaching dental hygiene full time for two years, and at Concorde since July 2017.

In her spare time Andrea likes to travel, and hike. She especially likes to hike in the Southwest. Her bucket list includes hiking in every state in the US with her fiancé. She also enjoys traveling abroad and participating in Dental Mission Trips.


Ally Parks, RDH

Texas Division

Ally works in Dallas, Texas as a full-time clinical hygienist. Always passionate for helping others, she obtained her Dental Hygiene Degree in 2014. From her first day as a Registered Dental Hygienist, she sought new ways to improve the health and lives of her peers. Ally worked with operations such as Dentistry from the Heart and Texas Mission of Mercy, all with the intent to give back to local communities. Ally holds a Standard Proficiency in Dental lasers; she is a member of the American Dental Hygiene Association and the Texas Dental Hygienist Association.

In her free time, Ally hikes around Texas and spoils her Australian Shepherd, Jax, with frequent trips to local lakes.


Amanda Ledford, RDH

Texas Division

Amanda is a full time clinical hygienist in Sherman, Texas. She holds an Associates of Applied Science Dental Hygiene degree as well as a Standard Proficiency in the Diode Laser. Amanda has been in the dentistry field for 8 years and prides herself on staying up to date on the ever-changing standard of care for her patients.

In her free time, she enjoys spending time with her husband and their son and visiting her parents farm.

Advanced Dental Hygiene is designated as an Approved PACE Program Provider by the Academy of General Dentistry. The formal continuing education programs of this program provider are accepted by AGD for Fellowship, Mastership, and membership maintenance credit. Approval does not imply acceptance by the state or provincial board of dentistry or AGD endorsement. The current term of approval extends from 1/1/2018 to 12/31/2019. Provider ID# 381332