Table 1.

Four-Dimensional vs Static Measurement of Facial Skin Improvement

Four dimensions	Static dimensions
• Natural-looking facial expressions and transitions between facial expressions (glide planes) • Changes apparent during communication • Consistent age-appropriate correction across the face	• Single-expression • Noncommunicative changes in appearance • Limited measure of “rejuvenation” • Can miss imbalances or overcorrection and/or give the impression of suboptimal correction