Speech performance in adult patients undergoing Invisalign treatment.

Objectives: To assess speech performance of adult patients undergoing orthodontic treatment with Invisalign.

Materials And Methods: Twenty-four adult patients with Invisalign (Invisalign group: 6 men, 18 women; average age; 34.88 years) and 20 adult patients with fixed labial appliances (fixed group: 5 men, 15 women; average age; 38.