Which type of breast augmentation incision is least likely to cause loss of sensation of the nipples?

There is not a perfect answer for this. There are surgeons like my self who will claim that the incision will not necessarily affect nipple sensation, as it is the surgery itself. This is some what controversial and to be absolutely certain to not lose nipple sensation then you should not have the surgery.

The risk of sensation loss is very low but it is not zero for either approach, inframammary or periareolar incision.

Good luck.

Probably none of the incisions directly affect nipple sensation directly. The nerves to the nipple come more from above and to the side of the nipple, then below where the incision is made when choosing that type of approach. Which incision is the best approach is an entirely different question. Nipple sensation loss is most commonly completely reversible with time, and that numbness is probably just the pressure of the implant on the nerves in the breast, similar to when you sit on your leg funny and your foot goes to sleep. However, there is a tiny nerve coming up the side of the chest into the breast and that supplies much (but not all) of the sensation to the nipple. If during the course of making the pocket that nerve is injured, numbness of the nipple may result. Usually temporary, but in a minority of cases it can be permanent reduction, or even absence of sensation in the nipple. I have seen it take up to one year, sometimes more, to regain nipple sensation, although usually it takes less time.If you absolutely cannot be without nipple sensation, don't have an augmentation. If you are the rare, unlucky minority who experiences permanent loss of nipple sensation, you will not be happy.

It does not make sense to put scar tissue on a breast. Armpit incision is a wonderful scar-free option for breast augmentation. Silicone implants can absolutely be inserted through the arm-pit, don't let anyone tell you that is not an option. There are few reasons for an incision under the breast or through the nipple. The scarring under the armpit is minimal, look at the attached video. Don't let doctors not comfortable with the approach talk you out of it. Transaxillary is the standard in Asia and the UK and the results are completely natural. Patients are so happy not having to deal with any types of incision or scarring on the breast.