저자들은 9세 10개월된 Class I discrepancy 증례를 다각적으로 검사한 후 그의 가족력과 Grater. Nance, Mills, Lloyd, Dewe, 등의 생각대로 Clinical arch lenth의 증가를 더 기대할수 없다고 판단하고 연속발치를 시술하여 전치부의 교우교합과 총생이 거의 해소되어 좋은결과를 보이고 있으나, 두부X-선 규격 사진분석에서 보는바와 같이 Interincisal angle이 약간 크므로 향후 예견되는 Deep Overbite와 Incisal Inclination Control에 치료의 역점를 두고자한다.
Serial extraction procedure, when cautiouly practiced in severe discrepancy case, can be a good clinical approach, but the treatment planning must always be based on accurate analysis of all conditions, especially patient’’s individual growth pattern and his family development. It is most difficult to determine the timing and selection of most effective sequence of deciduout extraction. It is the best candidate that patient is with class I malocclusion with harmony of the skeletal and muscular system and severe discrepancy of the tooth system. The authors have observed a female, who has complained of the malalignment of mandibular permanent incisor teeth. Serial extraction has been performed to relieve it through adequate various informations and resulted in a fairly good prognosis.
