In recent years, the Invisalign system has gained the attention of adult patients motivated by aesthetic considerations. This system is now commonly used, especially in periodontal patients. In this case report, a periodontal patient with Class I malocclusion requiring mandibular incisor extraction was successfully treated using the Invisalign clear aligners system. Schlagwörter: clear aligners, incisor extraction, Invisalign, invisible orthodontics, orthodontics, periodontal disease