Thanks
@Luka . It's a good question. The answer boils down to a good surgical plan, reasonable patient and surgeon expectations and ultimately quality surgery being carried out.
Firstly, you are unlikely to achieve as dense an outcome in the crown compared to a hairline as the eye optically looks down onto crown hair and the skin underneath rather "through" a hairline. Making sure our patients understand why the crown won't look as thick as a hairline before they undergo surgery is important as it keeps in check their expectations from surgery. This may partly explain some of the allegations that you come across.
The key principle of surgery in a crown, is a quality extraction of grafts, ensuring a higher hair per graft ration than you would be aiming for in a hairline. The subsequent implantation density will vary between patients and their skin perfusion and note, not everyone has poor vascular perfusion in the crown. There are may different factors than can affect poor graft survival including poor extraction technique, poor implantation technique and poor graft care/ handling during the procedure.
We sometimes see patients coming back 12 months post surgery and are still about 50-80% their way through their growth, so patience is another factor. Sometimes waiting longer to see how things have progressed following surgery is important and often the extra time of growth and thickening resolves any remaining concerns.
We hope that make sense!
