The risk limit for PONV was determined to be ≥5.5 years for children who underwent dental procedures under general anesthesia. Postoperative pain and rescue analgesia constituted risks for PONV.

This study showed that measurements on negative digital models offer a high degree of validity when compared to measurements on positive digital models and plaster models; differences between the techniques are clinically acceptable. Direct scanning of the impressions is practicable method for orthodontists.