Mar 1, 2016 鈥 By WSU News Services 鈥 In the 14 months she took classes to turn her associate degree in dental hygiene into a Bachelor of Science degree, Liz Kristek worked full time as a dental hygienist, kept up with her toddler and gave birth to her second child. She found the time to take as many as 12 credit hours of classes at once because the Registered Dental Hygienist-to-Bachelor of Science in Dental Hygiene (RDH-to-BSDH) deg