牙根纵裂与嚼槟榔习惯的关系

摘要

目的：探讨长期咀嚼槟榔在牙根纵裂发生中的作用。方法：对长期咀嚼槟榔的27例牙根纵裂患者的年龄、性别、个人史及其患牙的临床表现进行分析研究。结果：牙根纵裂好发于中老年人第一磨牙的近中(颊)根(78%)，特别是下颌第一磨牙近中根(59%)；男性(70%)多于女性；患牙牙合面严重磨损，出现牙合面形态改变。结论：长期咀嚼槟榔致反复、长期的过大牙合力与异常方向的牙合力可能是牙根纵裂发生的重要因素。%Objective　The aim of this article was to study the causes of vertical root fractures. Methods Age and gender, personal history of the sickness and clinical features of vertical root fracture in 27 patients were studied. Results Vertical root fracture tended to occur in patients with a higher mean age (54 years) and were more frequent in male (70%) than in female. Mesial or mesial-buccal roots of the first molars (78%) were the predilection site of vertical root fracture. All of the patients had chewed betel nut for 10 to 25 years. The occlusal surfaces were abrasive. Conclusion Vertical root fracture is associated with an excessive, repetitive, and heavy mastictory stress applied to a tooth.