Since infection is so rare after augmentation, it’s rare to have a study that includes enough patients and is organized well enough to show the true difference between the incisions. However, low grade infection is one of the things that can contribute to capsular contracture, and there is a very well designed study of hundreds of patients that shows that transaxillary incisions produced the highest incidence of contracture (6.4%), followed by periareolar (2.4%) and inframammary (0.5%).
That said, if you prefer the periareolar incision, then I would ask your surgeon to perform the procedure that way. Using a protective layer between the implant and the skin (like a Keller funnel or a Tegederm) while the implant is being inserted can reduce your risk even further.