用接触式色差仪测量天然牙颜色的重复性研究  

Repeatability of color measurement of natural teeth with contact colorimeter

作　　者：甘云娜[1] 王忠义[1] 陶梅[1] 赵桂文[1] 

机构地区：[1]第四军医大学口腔医学院,陕西西安710032

出　　处：《牙体牙髓牙周病学杂志》2001年第5期311-313,共3页Chinese Journal of Conservative Dentistry

摘　　要：目的 :检测MINOLTACS - 32 1便携式色差仪在口内进行天然牙颜色测量的重复性和可靠性。方法 :测量 18～ 2 0岁的学生上颌前牙L a b 值 ,A组受试者一轮测完后再进行第二次重复测量 ;B组测量对每个牙在不移动测量头的情况下进行第二次重复测量 ,尽可能地保证两次测量的位置完全一致。计算相应的色差ΔE ,进行比较、分析。结果 :A组色差ΔE明显大于人眼的最小分辨值 1.5NBS ,B组则小于 1.5NBS。结论 :采用B组试验方法 ,可以将MINOLTACS - 32AIM:To examine the repeatability and reliability of color measurement of natural teeth with MINOLTA CS-321 portable colorimeter intraorally. METHODS: The L*a*b* value of maxillary anterior teeth of freshmen in FMMU between 18 and 20 years old was measured. The examinees in Group A were measured again after all the anterior teeth were measured. The examinees in Group B were re-measured just before the instrument was removed, in order to assure the same places were measured. All the ΔE were calculated and analysized. RESULTS: The Δ E of Group A were larger than 1.5 NBS significantly. That is the smallest ΔE which could be differentiated by human eyes. The ΔE of Group B were smaller than 1.5 NBS. CONCLUSION: MINOLTA CS-321 portable colorimeter is suitable for small-area color measurement of teeth intraorally.

关 键 词：仪器测色 天然牙 色差仪 口腔修复学 

分 类 号：R783[医药卫生—口腔医学]