【摘要】 目的:探讨口腔肿瘤向下颌骨浸润蔓延的传播扩散途径(模式)以及在微创术中保留下颌骨的可行性。方法:将60例成人下颌骨以染料浸泡后,在10～20倍的体视显微镜下进行观察。结果:在经染料浸泡的标本上,渗入着色剂的副孔清晰可见。下颌骨内侧面着色副孔的出现率比外侧面的多;在外侧面,下区上部的着色副孔数最多;在内侧面,下区中部的着色副孔数最多。结论:口腔肿瘤向下颌骨的浸润蔓延可能有3种传播扩散途径:(1)口腔肿瘤经下颌骨外侧面的副孔向下颌骨浸润扩散;(2)口腔肿瘤经下颌骨内侧面的副孔向下颌骨浸润扩散;(3)口腔肿瘤一旦侵及骨髓腔,便可在下颌骨内经下颌管迅速传播扩散至其它部位。更多还原

【Abstract】 Objective: To study the mode of which the oral tumor spread into the mandible and its relationship with the accessory foramina. Methods: Mandibles were divided into 2 regions and 6 sections in 60 specimens, and then the number of the accessory foramina and their distribution on the surface of mandible were observed under microscope. Results: The number of the accessory foramina varied greatly. In each specimen, there were more foramina on the medial surface of the mandible than those on the lateral, and the inferior region more than the superior region. In the medial wall, the region around the inferior dental foramen was the commonest dedicated site for repeated the occurrence of the accessory foramina. Conclusions: These findings show that the accessory foramina present in sufficient numbers at the medial and lateral mandibular surface, and it is possible that they could provide a direct pathway through which the oral tumor could spread into the cancellous bone during its advanced stage of infiltration.更多还原