牙隐裂的临床观察和病因分析

Clinical Observations and Analyses of the Causes of Cracked-teeth

目的 研究牙隐裂的致病因素。方法 对102例牙隐裂患者的128颗患牙进行临床观察。结果 牙隐裂的好发年龄为40-60岁,好发牙位为上颌磨牙,其中以第一磨牙最为多见。结论 创伤性(牙合)力是牙隐裂的重要致病因素,牙尖斜面是隐裂发生的易感因素,牙齿本身结构薄弱区和发育缺陷是牙隐裂发生的内在条件。

Objective To study the pathogenic factors of cracked-teeth. Methods 128 teeth of 102 patients with cracked-teeth were observed. Results The predilection age of cracked-teeth was 40 - 60 years old, the predilection teeth of cracked-teeth was maxillary molar and the first maxillary molar was the most freqnently found. Conclusion Traumatic occlusal force was the major factor that led to cracked-teeth, cusp inclination was a susceptible factor that resulted in cracked-teeth, and structural weak areas and development defect of teeth were intrinsic condictions of cracked-teeth occurrence.