The phrase "a first implantation" is correct and usable in written English.
It can be used in contexts related to medical procedures, particularly in reference to the initial placement of an implant in a patient.
Example: "The surgeon explained that a first implantation of the device would be necessary before any further adjustments could be made."
Alternatives: "initial implantation" or "primary implantation".
The ethical problems arise most from the uncertainty if proper resterilization can be accomplished after a first implantation and from the fact that devices labeled as for single use should undergo an approval process before reuse, if this action is intended.
For example, a first implantation of 0.4 cc of ArteFill will often be sufficient for forehead lines or glabellar frown lines, one nasolabial fold, one upper or lower lip, both corners of the mouth, both marionette lines, or two neck folds.
Dental implant failures occur occasionally, and clinicians may hesitate to perform a second implantation because of the uncertain prognosis.
After removal of the photoresist, a second implantation for channel doping was followed in the whole wafer area with a condition of boron, dose = 5E12 and E = 3keV.
A second implantation may be necessary 3 months later.
Many cases of sutureless intrascleral posterior chamber IOL implantation may be a second implantation surgery that had had scleral incisions.
In recurrences, a second implantation between the ArteFill "base" and the dermis of the wrinkles usually provides a lasting effect.
A second implantation is often necessary, especially in the lower third of the nasolabial crease adjacent to the corner of the mouth.
Uneven distribution in the form of a string of pearls can be compensated by a second implantation of ArteFill into the gaps.
A second implantation of ArteFill applied horizontally along the dry wet border (red line) of the inner vermilion increases fullness or the "pouting" effect (Fig. 17).
After a complication implicating a transvenous device, patients are reluctant to undergo a second implantation, and the stress of possible complications related to explantation makes the subcutaneous system even more attractive.
