J.S.
my dentist recomends not going in until at least age 3. Yours seems young to go. The first appointment should only be to get the child accostomed to the office and tools, not an actual cleaning or x-rays. Our dentist explained each instrument and demonstrated how they work and what each one does. She counted all their teeth (really a visual exam) to make sure they were all there. Then I had a cleaning and they got to watch me. Unless it is necessary, i would wait. You don't want her to get scared and set up a bad experience. She's young to understand everything.
They sell little fingertip tooth brushes you can use and toddler toothpaste. Also wiping teeth off with a damp cloth will help keep them clean.