Journal
FACIAL PLASTIC SURGERY
Volume 38, Issue 2, Pages 116-123Publisher
THIEME MEDICAL PUBL INC
DOI: 10.1055/s-0041-1741560
Keywords
aesthetics; hyaluronic acid fillers; elastic modulus; rheology
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This paper provides an overview of the properties used to characterize HA fillers and presents their rheologic and physicochemical values for scientific comparisons. Understanding these characteristics helps clinicians choose the appropriate HA fillers for treatment.
Injections with hyaluronic acid (HA) fillers for facial rejuvenation and soft-tissue augmentation are among the most popular aesthetic procedures worldwide. Many HA fillers are available with unique manufacturing processes and distinct in vitro physicochemical and rheologic properties, which result in important differences in the fillers' clinical performance. The aim of this paper is to provide an overview of the properties most widely used to characterize HA fillers and to report their rheologic and physicochemical values obtained using standardized methodology to allow scientifically based comparisons. Understanding rheologic and physicochemical properties will guide clinicians in aligning HA characteristics to the facial area being treated for optimal clinical performance.
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