Crowding of Anterior Mandibular Teeth

Patients with moderate mandibular anterior crowding will be treated in this study. The efficacy of micro-osteoperforations technique by special drill in accelerating orthodontic tooth movement during clear aligners therapy will be assessed along with patient's pain and satisfaction. There are two groups: 1. a group of patients in which participants will be received treatment with the traditional clear aligners technique in addition to a micro-osteoperforations technique. 2. a group of patients in which participants will be received treatment with the traditional clear aligners technique alone