Assessment of the reproducibility of facial expressions with 3-D stereophotogrammetry

摘要: Objective There is little research into analyzing whether facial expression changes are secondary to actual treatment or normal day-to-day variation. This study aims ascertain nine-facial expressions were reproducible. Subjects and Methods Thirty-nine white subjects performed expressions, captured by three-dimensional stereophotogrammetry in three sessions. After initial capture (session 1), each was repeated after 15 minutes 2) then 4 weeks 3) the session. Statistical analysis on mean variability of landmarks between session 1 2 3. Results Repose most reproducible expression. The least “blow-out-the-cheeks.” Analysis showed no significant differences reproducibility. 3 for “smile-with-lips-open” “blow-out-the-cheeks” expressions. Conclusion Facial a 15-minute period. ability reproduce apart