Are there dentistry schools which accept students with associates degree out having bachelor?

No, there are no dental schools in the United States (or generally in other developed countries) that will accept students directly from an associate's degree without a bachelor's degree. Dental schools require a bachelor's degree as a prerequisite for admission. The associate's degree will not fulfill the educational requirements. The bachelor's degree provides the necessary foundation in the sciences and other areas deemed crucial for success in dental school.