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About Us

Dental Advantage was founded by a group of dental educators that are RDA's and RDAEF's.
We have combined over 40 years of experience and a desire to provide each student with a learning experience that promotes excellence in learning and performance.
We strive to run our business with the highest level of integrity resulting in lasting relationships with our students and their employers.
Dental Advantage prides itself on providing the highest quality of career dental training while keeping the cost to the student at an affordable rate.

We pride ourselves on our students' high pass rate on both the written and practical examination.
From the entire team at Dental Advantage we would like to take the time to thank you for choosing Dental Advantage for all your educational needs and certifications.
We measure our success by your success.

You can do it!





Lynn Walker, RDAEF
Hi My Name is Lynn Walker. Sometimes I feel like the old lady of the group when it comes to dentistry, as I have 37 years in the industry. I graduated from Los Angeles City College’s dental assisting program in June 1975 and have been an RDAEF, since taking the second RDAEF program at UCLA in 1987. I have been fortunate to have worked with some of the best Dentist and dental educators in the business, which has allowed me the opportunity to pass on my knowledge to our students. I have been a dental educator for over 20 years and have taught at Orange coast community college as well as private postsecondary dental assisting programs. I am the director of Dental Advantage, as well as a lead instructor and office administrator. I have been married for almost 24 years and have 4 children, 3 dogs and 2 cats. In my spare time ( ha, ha ), I love to cook, garden and just hang out with the family.


Judy Krywcun, RDA
I have been in the dental field for the past 17 years. For 14 of those years I have had the pleasure of working in the education sector as well as in private practice. I attended Southeast Missouri State University for my undergraduate degree in business administration and subsequently attended Roosevelt University to obtain my MBA. Taking a major turn in my life, I then attended Charter College and obtained my RDA .

I have two great kids, both of them currently attending college. My son is working toward a mechanical engineering degree at UCLA and my daughter is working toward a degree in Economics at UC Santa Cruz with hopes of becoming a CPA. In my spare time I enjoy cake decorating and spending time with my dogs Lexi, Toby, and Bailey.


Danielle Ruiz, RDA
Hi, My name is Danielle Ruiz, and I have been an RDA for over 15 years. I have worked in the dental field for over 17 years. I currently teach various classes for Dental Advantage on the weekends, including Radiation Safety, Coronal Polish, and Infection Control, among others. I have 3 wonderful children, who keep me busy as a stay at home Mom during the week! Laura is my teenager, she will be in 10th grade this year, involved in Show Choir, Softball, and many volunteer activities. Andrew is my middle child, who has Autism and multiple disabilities. He Lilyis my toddler, and well, she just keeps me busy with all her exploring! Although I no longer work chairside on a regular basis, I keep up to date in the field, attending continuing ed courses on a regular basis, as well as following any new changes pertaining to RDA’s. I look forward to helping you further your career in the dental field, in any way I can!


Jenny Castillo
My name is Jenny Castillo, I am an experienced RDA of 30 years. During which time I have worked in various offices in both the clinic and private settings. I have been in the position of Team Leader, Back office Supervisor, Front office Manager and chairside as an RDA. I have been an educator for nearly 8 years, having taught for another company prior to coming to Dental Advantage. I also teach at UEI College in Fresno, where i've been for over 2 years.


Sheria Armour-Hyde, RDA, EMT
Hi. My name is Sheria Hyde. I am a very happy RDA and EMT. I enjoy teaching all types of people from many walks of life. I understand the importance of personalized teaching and professional guidance toward the improvement in current skills and the advancement in new traits. I look forward in the chance to incorporate you into our skilled dental team.


Dental Advantage

P.O. BOX 1146
ATWATER, CA. 95301

(209) 358-0707

fax: (209) 357-7899

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