I am currently studying to achieve my goal of becoming a dentist.
You make the right choice. It is very rewarding to be a aids in providing oral health services.
It is. I just like the idea of creating a better smile for people everywhere. Smiles are one of the first thing people see when they meet someone. 
That is amazing. Which group will you like to be categorized?  guild of barbers or lay barbers.
That is some ancient history you pulled up, but I would define myself as a lay barber. I want to be involved in fixing everything inside the mouth and helping.
I think  the Guild of Barbers will be cool too because they create to distinguish more educated and qualified dental surgeons from lay barbers.
They both serve a good purpose, but I guess I want to be more involved in the teeth removing and shaving of the teeth when necessary. Both are important nonetheless.
Tooth decay can be very worrisome to a lot of people especially when the cavities may be a number of different colors from yellow to black.
Definitely. That's why I want to do my part to help. Putting in dental fillings to remove the decay is a huge need and everyone needs a dedicated dentist for the job.
It will cost you some money to acquire the dental materials as they are specially fabricated materials, designed for use in dentistry.