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Objective: To study the tooth size correlation between permanent cuspid and bicuspid group and other teeth groups in malocclusion. 目的：研究錯(cuò)牙合、正常牙合的尖牙、雙尖牙組與其它組牙的相關(guān)性，為尖牙、雙尖牙組的預(yù)測(cè)提供科學(xué)依據(jù)。