该疾病是一种幼犬发育性疾病，造成颌骨和头骨的结构改变。
It is a developmental disease in puppies causing extensive bony changes in the mandible and skull.
在临床口腔医学中，颌骨缺损是最常见的疾病之一，它由肿瘤、先天发育畸形、外伤等引起。
Jaw defect is a common disease in the mouth medicine, which could be caused by tumor, congenital abnormality, trauma and serious firearm damage.
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