Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Saudi Arabia.
J Dent. 2012 Jul;40 Suppl 1:e82-7. doi: 10.1016/j.jdent.2012.01.009. Epub 2012 Jan 25.
The purpose of this study was to evaluate the ability of dental students to match the shade of their own teeth.
Fifty female dental students in the College of Dentistry at King Saud University, who had not received any formal dental training in color science or shade matching procedures, were screened for color deficiencies and selected to participate in the study. Each subject and three clinicians selected independently the closest match for the subjects' own right or left sound maxillary central incisors under controlled viewing conditions, using VITA classical shade guide (VITA Zahnfabrik GmbH, Bad Säckingen, Germany). Each examined central incisor and the 16 samples of VITA classical shade guide were measured with the VITA Easy Shade (VES) spectrophotometer to determine the CIELAB color parameters. The color differences (ΔE) between each examined tooth and the 16 samples of the shade guide were calculated. The minimum ΔE values were compared to ΔE values of the shade obtained by VES, subjects and clinicians.
The results showed a significant difference in the accuracy of shade selection between the instrumental and visual means. ΔE value of shade selected by clinicians was significantly lower than those selected by the subjects.
It was concluded that, spectrophotometric shade analysis was more accurate compared to human shade assessment.
A reliable self-perception of the subjects' own tooth color, may aid in the shade matching procedures. It might lead to increased patients' satisfaction at the finalization of the restorative procedures.
本研究旨在评估牙科学生匹配自身牙齿颜色的能力。
从沙特国王大学牙科学院的 50 名女性牙科学生中筛选出颜色缺陷患者，并选择他们参加本研究。在控制观察条件下，每位受试者和三位临床医生独立选择最接近其自身右侧或左侧上颌中切牙颜色的匹配物，使用 VITA 经典比色板（德国 Bad Säckingen 的 VITA Zahnfabrik GmbH）。使用 VITA Easy Shade（VES）分光光度计测量每个检查的中切牙和 VITA 经典比色板的 16 个样本，以确定 CIELAB 颜色参数。计算每个检查的中切牙与比色板上的 16 个样本之间的颜色差异（ΔE）。比较每个检查的中切牙与 VES、受试者和临床医生获得的比色板上的最小 ΔE 值。
结果表明，仪器和视觉方法在比色选择的准确性上存在显著差异。临床医生选择的比色板的 ΔE 值明显低于受试者选择的比色板。
与人工比色评估相比，分光光度比色分析更准确。
受试者自身牙齿颜色的可靠自我感知可能有助于比色匹配程序。这可能会增加患者在修复治疗完成时的满意度。
