The first exam appointment is usually made via a phone call from the patient. Although these days, contact can often be made by e-mail, too. Any initial queries that you have can be answered and you can let the dentist know of any problems you have experienced in the past.
You don’t want to be too early for your appointment as you might have to sit around and wait and that can add to any nervous feelings you might have. Arriving 10-15 minutes before the actual appointment time is good as your dentist will probably want you to look through a medical history questionnaire, and fill out any details. It’s quite important then to have to hand the details of any medications that you are currently taking and any major illnesses or operations that you have had in the past. This may feel insignificant to you, but it may have an important bearing on any medication that the dentist might want to prescribe for you.