does dentistry require to get into medicine or is there a separate course?
Dentistry is a separate course to Medicine. You do not require an MBBS to get into Dentistry.
In many countries and decades ago, Dentistry was considered an medical speciality, however, due to a lack of Dentist, it has now evolved into a separate course.
As for the Bachelor of Oral Health, it is VERY limited to basic Dentistry. The ENTER/ATAR requirement is about 15-20 points lower (80-85).
You can transfer to Dentistry after completing the BOH, however, you will have to go through the process like any one else.
GAMSAT, interview, GPA scores etc.