RecruitingClinical trialMulti-site Study to Look at Tooth Wear and Tooth Sensitivity and the Risk Factors Associated.The goal of this observational study is to learn about tooth wear and tooth sensistivity and reasons for these conditions in five locations throughout the United States. The main question it aims to answer is: The main objective of this study is to determine tooth wear and tooth sensitivity in adults in the U.S., and to investigate their association with risk factors