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下顎第一小臼歯
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Wikipedia definition
1. Mandibular first premolar​The mandibular first premolar is the tooth located laterally (away from the midline of the face) from both the mandibular canines of the mouth but mesial (toward the midline of the face) from both mandibular second premolars. The function of this premolar is similar to that of canines in regard to tearing being the principal action during mastication, commonly known as chewing. Mandibular first premolars have two cusps.
Read “Mandibular first premolar” on English Wikipedia
Read “下顎第一小臼歯” on Japanese Wikipedia
Read “Mandibular first premolar” on DBpedia

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