To take admission into any reputed dental college in the USA, you need to appean in the Dental Admission Test (or the DAT) after you complete pre dental school (commonly 4 years of graduation from college). Completing predental sciences is absolutely mandatory if you want to get admission in any dental college. The college will then take into note your DAT score and GPA. The scholarship  depends and varies from college to college and also varies for international students taking the SATs or APCs for applying to predental school.