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Abstract

Extraction or non-extraction is an issue that we face in our daily orthodontic practice. Before deciding the treatment plan, we have to examine the case carefully. Orthodontic tooth extraction involves more than just the need to create space in the arches but also the concerns of facial esthetics and treatment stability. The report presented a case of teenage boy with severe external root resorption of tooth 27, 37, 46, 47 which caused by impaction of third molars and a supernumerary premolar. Patient already had orthodontic treat-ment before and did not favor a comprehensive orthodontic treatment again. Tooth extraction of 27, 37, 47 and the supernumerary premolar were conducted. The lingual holding arch with hook was used to upright the mesially erupted third molar. The opinion and philosophy of the tooth extraction decision making was discussed.

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