目的：了解我国汉族人群恒牙牙体形态特征，为牙体、牙髓病的临床治疗提供解剖学资料。
AIM: to investigate the morphology of permanent human teeth of the Han Nationality and provide anatomic data for clinical treatment of tooth and pulp diseases.
结论：自制透明模拟根管模型可以满足牙体牙髓病学前期实习根管治疗教学的要求，提高学生学习兴趣和操作技能，增强根管治疗教学效果。
CONCLUSION: Transparent simulated root canals blocks could satisfy the demand of pre-clinical practice training of root canal treatment and enhance the learning effect.
结论面部牙源性皮肤瘘管的复发误诊和牙髓牙体疾病治疗不彻底密切相关。
The recurrence of odontogenic cutaneous fistula in the face was closely associated with the misdiagnosis and inadeguate treatment of the odontogenic diseases.
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