Clinical hours for dental school typically refer to time spent working directly with patients in a dental setting. This can include volunteering at a dental clinic, working as a dental assistant, or shadowing a dentist. Some dental schools may also accept clinical hours that are earned in a medical setting such as a hospital, as long as the hours are related to patient care. For example, working as a patient transport volunteer in a hospital may not be considered directly related to clinical hours, but volunteering in the emergency department or assisting in a medical clinic may be considered as related to clinical hours. It's always a good idea to check with the specific dental schools you're interested in attending to find out what they consider to be acceptable clinical hours. They may have specific requirements or guidelines that you should follow. Additionally, you can always check with your pre-dental advisor or your dental school's admissions office for more information.