Objective To compare the fracture resistance and failure modes of endodontically treated human upper premolars restored with different postcore systems.
目的比较不同桩修复离体牙对修复体整体抗折强度的影响。
Three pairs of incisors, one pair of elongated canines, three pairs of molars, four pairs of premolars, upper and lower, for a total of 44 teeth.
有三对门牙、一对延长犬齿、三对臼齿、四对前臼齿，上下加起来，一共。
Three pairs of incisors, one pair of elongated canines, three pairs of molars, four pairs of premolars, upper and lower, for a total of 44 teeth.
有三对门牙、一对延长犬齿、三对臼齿、四对前臼齿，上下加起来，一共。
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