The place to get help with those issues is the career development office of your college’s student services department. They have tools to assess your attitudes and they’ll help you figure out if you’d be happier with the day-to-day of dentistry or business. They also can help you identify graduate schools (essential if you choose dentistry), to prepare your resume, to polish your interviewing skills, and to make contacts for post-graduation employment (if business).

So make your appointment with them as early as possible in your college studies–your first semester will be filled with general ed. courses that will apply to both programs so getting with the career people in a couple of months will be soon enough.

Understand that selecting a career early doesn’t mean you can’t change your mind later. What is does is to give you a clear goal–and if you make progress toward that goal but then change, you’ll find yourself further along toward the new goal than you’d have been if you just drifted.

BTW, if in the end you choose business, you should understand that a business degree doesn’t necessarily make you a top candidate for any job. Many business professionals don’t have business degrees (including over 50% of the CEOs of the Fortune 500), they have either experience or a degree in some other area. You should plan your business degree program to build impressive skills in a particular area of business; being specifically prepared for distribution or human resources, for example, makes you look like a better candidate to fill an essential slot.

But the best thing to do is remain undeclared until you get a feel for your classes and see which ones you like best. Good Luck!