Extraction treatment of an adult patient with severe bimaxillary dentoalveolar protrusion using microscrew anchorage

Bimaxillary dentoalveolar protrusion is one of the most prevalent malocclusion in Asian population.Traditionally, orthodontic treatment often involves the extraction of four first premolars and demands the least amount of anchorage loss, therefore headgear used to be an unavoid- able fate of these patients. Nowadays, along with the development of implant anchorage, more and more patients have benefited from the implant-aided orthodontic treatment, even escaped from orthognathic surgery. However, for extremely severe cases, orthodontists seem to still have to face the limitation of orthodontic treatment and turn to surgeons for cooperation. In this case, we will see how dramatic changes happened on an adult patient with severe bimaxillary dentoalveolar protrusion malocclusion after the orthodontic treatment with microscrew implants as the temporary skeletal anchorage with the patient＇s written informed consent,