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当边缘性牙周组织发生病变而且波及深部组织,或牙髓发生病变时,炎症通过副根管,根尖孔或牙本质小管而彼此影响,这样就产生了牙周牙髓联合症。牙周牙髓联合症可分为如下几种: (1)第Ⅰ类即牙髓疾病是原因,引起继发性牙周疾病,牙髓坏死后根管内的刺激物,细菌及其产物通过根尖孔,副根管,破坏根尖部或根分叉部位的牙周组织,沿牙周膜逆行到边缘牙周组织。这种情况多见于年青患
When the marginal periodontal disease occurs and affects deep tissue, or pulp lesions, inflammation through the root canal, apical foramen or dentinal tubules and each other, resulting in periodontal pulp syndrome. Periodontal dental pulp syndrome can be divided into the following categories: (1) The first category is the endodontic disease is the cause of secondary periodontal disease, root canal after pulp necrosis stimuli, bacteria and their products through Apical foramen, root canal, the destruction of the root tip or root bifurcation of the periodontal tissue, along the periodontal membrane retrograde to the edge of the periodontal tissue. This situation more common in young patients