根管显微镜在下颌前磨牙根管定位中的作用 关键词] 根管显微镜；下颌前磨牙；根管定位 [gap=1098]Key words] Dental operating microscope;Mandibular premolar;Orifice locating
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下颌第一前磨牙 mandibular first premolar ; The First Permanent Mandibular Premolar
下颌第二前磨牙 mandibular second premolar ; The Second Permanent Mandibular Premolar
下颌右第一前磨牙 Mandibular right first premolar tooth
释义下颌左第一前磨牙 Mandibular left first premolar tooth
释义下颌左第二前磨牙 Mandibular left second premolar tooth
下颌第三磨牙前倾阻生 the mandibular molar forward impaction
目的：研究离体下颌前磨牙的牙根及根管形态。
Objective: To investigate the root and canal morphology of extracted mandibular premolars.
下颌前磨牙创伤咬合点加载的三维有限元应力分析。
Three-dimensional finite element analysis of the stress of the mandible premolar under loading on its traumatic occlusal spots.
研究目的：探讨下颌前磨牙生理性根尖孔的形态特征。
Objective: To investigate the morphology of physiological foramen of mandibular premolars.
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