Materials of construction (composition)

·       Biocompatible

·       Nonantigenic

·       Nontoxic

·       Noncarcinogenic

·       Nonteratogenic

Performance

·       Reproducible and consistent outcomes

·       Adequate duration of effect

·       High safety profile

·       Minimal migration from injection site

Injection technique

·       Ease of administration

·       Suitable formulation to facilitate adequate placement

Patient satisfaction

·       Predictable outcomes

·       Minimal adverse experiences

·       Minimal downtime

Other

·       FDA-approved

·       Stable formulation to facilitate storage and handling

·       Versatile across applications

·       Affordable/inexpensive

·       Reversible