How Long is Contemporary Dental Assisting Training?

I would really like to change careers, so I am trying to figure out what I would need to do in order to be able to do this. I was thinking of getting into the Contemporary Dental Assisting field. Can anyone tell me how long the training takes for this career? I need to be sure to save up enough money to cover my living expenses during the training since I don’t want to have to work full time while I am in school. I want to make sure that I will have plenty of time to study so that I do well.