Second stage of implants. Is this a common method?

Yes it can be done, with he proper technique, the gum will have a god healing and will have no problem to have it restored , you will have a good layout of abutment and crown. there is an important situation, concerning the area, if its a posterior area, there si no problem, if is it an anterior area, needs to be done by someone that has good training, but yes , you have a solution.

Answer: I am glad that
everything has gone well so far. The question that you are really asking is
whether you can achieve an excellent aesthetic result with the exposure of the
implant and placing the abutment on the same day. The answer is yes, providing
the restoring dentist is skilled enough to place a temporary abutment and
temporary crown when he uncovers the implant during the second stage surgery.
Often a healing cap is placed in the implant after the second stage surgery to
allow the tissues to heal in the proper position. An alternative is to place a
temporary abutment with a temporary crown, which is contoured to give a proper
emergence profile during the healing stage. The emergence profile is basically
how the crown would look as it emerges from the gums. This would be my
preference as the bone to implant bonding has already occurred, and what you
are seeking at this point is the shaping of the gingiva (gums) so that the
final crown looks as natural as possible. Whether Waterlase or any other soft
tissue laser or scapel; an implant level impression has to be taken and sent to
the lab for fabrication of the crown. Using a prefabricated (my preference)
temporary crown or a chairside fabricated crown, you can have the uncovering of
the implant procedure and the impression done the same day. The advantage of
doing a temporary abutment and crown at this time is that you can create a very
nice emergence profile which makes your crown look as natural as possible. Hope
this helps. Good luck!