To describe treatment using aligners in an adult female patient with dental class II malocclusion associated with crowding. Treatment objectives were achieved in 10 months with patient satisfaction. Combining aligners with appropriate attachment location, geometry and staging are efficacious means of resolving class II malocclusion.

Primary failure of eruption is characterized by a non-syndromic eruption failure of permanent teeth in the absence of any mechanical obstruction. Applying orthodontic traction to teeth affected by PFE will not be successful and may cause ankylosis. This correspondence reviews and demonstrates the treatment of a case of PFE.