To successfully pursue a dental assistant career you must possess certain attributes. For instance you need to have good manual dexterity, be reliable and a good team worker. Although you do not have to have a degree to become a dental assistant, some states may require you to clear a written or practical exam and obtain a license or get yourself registered as a dental assistant. In cases where you are involved in specialized work like Radiological procedures in course of your professional duties, you may need to clear an examination in Radiation Health and Safety that is offered by the DNAB (Dental Assisting National Board) also. Some states may require you to clear a state approved radiology course.