Go shadow a dentist and see if you think you might like what they do. It can be easy to hate this job if you had the options of other great careers and hated the aspect of customer service, hand skills, educational investment, and effort required to be a successful dentist. People do drop out of dental school because they find out that they hate the level of hand skills required of them. You can never know for sure but make sure you're at least open to working at the millimeter scale with indirect vision. The other reason why people have to repeat a year of dental school is because of work ethic. Find the motivation you need to study biology, chemistry, biochemistry, physics and then anatomy & physiology, pharmacology, microbiology, and etc. The more you're interested in these subjects, the less of a strain it is to motivate yourself to study. If you don't have an interest in this but still want to be a dentist, try to find a way to make youself enjoy these subjects.
You can find out everything you need to know by searching Google. You really wouldn't need to post here to find that out and you most certainly don't need a counselor who knows ziltch about dental school telling you what to do. At most, they can tell you how to transfer to a university. You'll have to figure out which credits will transfer through and what classes you need to take before applying to dental school. But shadow a dentist first.
