Platelet-rich plasma and platelet-rich fibrin in human cell culture.

Objectives: The clinical use of platelet-rich plasma (PRP) for preprosthetic surgery has been a matter of controversy until now. Only recently, a new blood preparation has been developed which results in platelet-rich fibrin (PRF). The objective of the present investigation was to examine the growth factor release from PRP and PRF in vitro.

Unilateral atrophy of the cheek: autologous fat injection as treatment of choice.

Lipodystrophies are a set of heterogeneous conditions resulting from defective lipid metabolism and characterized by adipose tissue atrophy. We report on a 54-year-old woman who presented at the Department of Oral and Maxillofacial Surgery with an increasing unilateral atrophy of her left cheek for the past 3 years. The patient's history showed that she had sustained a left zygoma fracture 35 years ago but did not have any other disease.