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牙槽骨包括两部分:一部分是位于牙根周围并有牙周韧带附着的板层骨,一部分是支持牙槽骨,形成外层和内层皮质骨板和小梁骨或网状骨。在X线上,小梁骨被认为显示为条纹影像,但没有研究证实这种条纹结构是否真的就是小梁骨。本文对此进行了研究。 制取10段健康人尸体无牙下颌骨(50~70岁),前后向切开下颌骨,在以下4种情况下进行X线检查:①小梁骨去除以前;②小梁骨去除以后;③应用牙钻将皮
Alveolar bone consists of two parts: one is the lamellar bone around the root with periodontal ligament attachment, and the other is the alveolar bone, forming the outer and inner cortical plates and the trabecular or reticular bone. Trabecular bone is considered as a streak image on the X-ray, but no study has confirmed whether this streak structure is really trabecular bone. This article has carried on the research. Ten healthy teeth were obtained from the edentulous mandible (50-70 years old). The mandibles were dissected before and after. The X-ray was performed under the following four conditions: ① trabecular bone removal; ② trabecular bone removal; ③ application of dental drill skin