As other people have said before - its all about knowing what exactly you want and how would you go about it. I know we as mothers would want to be as much inlovled with the kids as much we can - but prolly with any 9-5 job you have - say engineer, say managment, say finance, say nurse, doctors, scientists anyone, they all have loans and they all have families - anything will keep you out of home for atleast this time of day - so as you would manage with thise roles, prolly somehow you will manage here too. A solid support from family is must - as with any working professional. You will need defintly need a good baby sitter - someone from family or outside to take care of your child. I wouldnt view it as a compromise - that oh i couldnt be there to care for my kid - I am out there working to provide for my child, for his/her education/needs/home family etc... Yes we all go home tired, but if we chose to have kids - then prolly thats what we need to do. Neverthless to say its easy - but just saying its not impossible. Definitly work for couple years before having a kid so that you have some financial "safety net" which will help during maternity time. Work 4 days a week, dont work saturdays - you know bootm line is - know what you want and find a way to balance around it, take vacations with your family - whatever time you spend - spend quality time with them. Be involved with other parents in your neighborhood, chose to live around sub-urbs so you living costs are lower, dont buy that swanky new care yet - get a house you can actually afford - you know like spend money where its really necessary and that will provide you with financial stability and lower your payments on debts, like we females are crazy about shopping - it will onvolve sacrifices - but hey, who said its gonna be easy?
Good thing about dentistry is - unlike business and finance professionals - there is not a lot of travelling involved. I was raised by a professional mom - yes there were times we missed her, but that made us appreciate her efforts even more, the way she made all her efforts to make sure she was there when we needed. It brings you cloer to your sibling - older siblings especially they way they take incharge for you and care for you.
Being a mother and having a strong career - its not for everyone - but people around us have done it and are doing it - and we will do it too.
Just my two cents.