Clinical Trial to Assess the Efficacy of Reducing the Aligners' Wear Protocol

The hypothesis of this project is that replacing the current 7-day wear protocol with a 3-day wear protocol, while integrating less tooth movement per aligner (reduce the amount of activation per aligner) may produce more consistent and continues orthodontic forces, therefore, increase the predictability, accuracy and outcomes achieved for various types of tooth movements and enhance the rate of tooth movement with the Invisalign system

Inclusion Criteria: * Physically healthy with no relevant allergies or medical problems * Male or female between the age of 18 and 30. * Full permanent dentition except for the third molars * Class I crowded dentition primarily for the lower anterior teeth (moderate crowding - 4-6 mm - according to Little's Irregularity Index) * Good oral hygiene and absence of periodontal disease * Malocclusion to be treated with Invisalign aligners (SmartTrack) * Any ethnic group Exclusion Criteria: * Orthognathic surgical cases * An extraction treatment plan * Poor oral hygiene * Patients with syndromes or craniofacial anomalies. * The use of any other orthodontic appliance than clear aligners' (Invisalign)