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《Journal of Clinical Stomatology》 2011-02
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A measurement of cracked teeth on the maxillary first molar cusp inclination by using CEREC3 CAD/CAM

RAO Xiao-bo,WANG Wen-mei,YU Qing,CHEN Yuan-hua.Department of Oral Medicine College of Stomatology,Nanjing University.Jiangsu Nanjing 210008,China.  
Objective:To study the anatmnical etiology of the cracked molars by measuring cuspal inclination of the cracked molars.Method:Measuring cuspal height,cuspal oblique ridge length and the distance between the cusp of cracked teeth group and control group by using CEREC3 CAD/CAM and calculating the inclination of the cusp,the mesial buccal-lingual inclined angle and the distal buccal-lingual inclined angle.Result:Significant differences are found between cracked teeth group and control group in the mesial buccal-lingual inclined angle and the distal buccal-lingual inclined angle(P0.05).Conclusion:It suggests that the factors of dental anatomy are closely related with the incidence of cracked teeth.The bigger the inclination and the smaller cuspal inclined angle,the greater possibility occurs cracked teeth.
【Fund】: 江苏省卫生厅课题(H200748)
【CateGory Index】: R783.2
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