AIM: to measure the parameters of pulp cavities of maxillary primary molars, and provide basic data for oralanatomy of primary molars and clinic application.
目的:测量上颌乳磨牙髓腔形态参数,为乳磨牙牙体解剖学提供基础数据,并供临床应用参考。
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According to the anatomy date, the oral airway model was established with hydrodynamics software.