This study investigated dental students' prejudicial beliefs towards underserved patient populations as an upstream constituent of provider attitudinal barriers to care. The objectives were to explore the scope and nature of prejudicial beliefs, to assess the value of critical reflection as essential preparation for patient care, and to identify insights that would inform the preclinical curriculum that, ultimately, reduce oral health disparity. The research used an integrated approach with qualitative and quantitative methods. An original serialized reflection assignment was introduced into the preclinical curriculum of 142 first year dental students to critically journal about the legitimacy of their a priori prejudicial beliefs. A purposive sample of 44 participants was obtained. Journals were analyzed for emergent themes and questionnaires for relevant context. Results indicated dental students identified a range of prejudicial beliefs and, through self-direction, experienced awareness and transformation of their beliefs. Participants agreed that reflection had personal and educational value. Insights were identified that could enhance the preclinical curriculum. This contributes to the evidence base on pedagogical strategies historically focused on post-experiential reflection. Themes that were explored include concepts defining the nature of prejudicial beliefs that could guide and inform professional practice. A need was identified to conduct grounded theory research on awareness of prejudicial beliefs as an antecedent to attitude change. v ACKNOWLEGMENTS I would like to thank my family and friends for their unwavering support by helping me stay balanced in the midst of the roller coaster ride of graduate school. Particular gratitude goes to my husband, sister, and parents who contributed as perpetual cheerleaders, sounding boards, and financial supports to make this goal reachable. The MPH program professors at SJSU deserve significant appreciation for the solid foundation upon which this thesis is based. Many lessons were learned along the way and their guidance will continue to impact my professional growth for years to come. As members of my thesis committee, Kathleen Roe, DrPH, Edward Mamary, DrPH, and Amy LaGoy, EdD deserve special recognition for their assistance in bringing this thesis to fruition. And thank you Dr. Goyal for helping me pick the right rabbit hole. This study would not be possible if not for the faculty and students of the University of the Pacific Arthur A. Dugoni School of Dentistry. Professors Christine Miller, RDH, MA, MS and Craig Seal, PhD devoted many selfless hours of their time to mentor and oversee this project. There isn't enough room to adequately thank them for this opportunity. Special acknowledgment goes to the 142 first year dental students who participated in this assignment. For all the participants, I greatly appreciate your candor, insights, and courage. It brought forth some amazing results. Most of all, I'd like to acknowledge-with the most sincere appreciation...