상·하악 제2대구치 발치를 동반한 II급 부정교합의 치료

Treatment of Class II Malocclusion with Extraction of Maxillary and Mandibular Second Molars

If a third molar has satisfactory shape and position, it can be a good substitute of the second molar. A 21-year-old woman had been referred to the clinic. She wanted to get an orthodontic treatment before prosthetic treatment. To minimize prosthetic treatment, the maxillary and mandibular third molars were planned to substitute the second molars. After second molar extraction, the maxillary third molar erupted with a slight mesial angulation without any intervention, which was corrected with minor adjustment using fixed appliance. The mandibular third molar was successfully protracted by loop mechanics using stainless steel wire with a root-mesial moment.