齿凿
Methods 150 cases with mandibular impacted molars, impacted supernumerary teeth or complicated tooth roots were divided into 2 groups at random. The complications after extraction were compared between high speed turbine dental drill group and dental chisel group.
方法对150例下颌阻生牙、复杂牙断根、埋伏多生牙随即分成两组,分别采用高速涡轮牙钻法和凿骨法,并进行比较。
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