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首页> 外文期刊>The Journal of Prosthetic Dentistry >Matching repeatability and interdevice agreement of 2 intraoral spectrophotometers
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Matching repeatability and interdevice agreement of 2 intraoral spectrophotometers

机译：两种口内分光光度计的匹配重复性和设备间一致性

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Statement of problem: The visual determination of tooth color with standard shade guides is a subjective method of color communication, depending on variables such as the light source, the operator, and the tooth. The assessment of tooth color may be improved by the use of special devices such as colorimeters or spectrophotometers. However, the repeatability and the interdevice agreement of these devices have not been thoroughly investigated. Purpose: The purpose of this study was to evaluate the effect of different illuminants (natural daylight, dental unit lamp, and daylight lamp) on the matching repeatability of 2 intraoral spectrophotometers (Easyshade and SpectroShade). Material and methods: The maxillary right central incisor and canine and the mandibular left central incisor of each of 10 dental students were measured by a single operator using both devices. The color of each tooth was assessed 3 times with each device under each of the 3 different illuminants (natural daylight, a dental unit lamp, and a daylight lamp). The device readings were expressed in Vitapan 3D-Master shade codes. Statistical analysis was performed and the level of agreement was assessed with the Spearman Correlation Coefficient. Results: A particularly high to moderate level of agreement among the readings made under natural daylight, a dental unit lamp, and a daylight lamp was observed for both devices (P<.01), suggesting that their matching repeatability was not completely satisfactory for clinical practice. A moderate and a moderate to high level of agreement was found among Easyshade readings when the 3 different illuminants were used. The level of agreement for the respective SpectroShade readings was particularly high to high (P<.001). A particularly low level of agreement was found among the respective Easyshade and SpectroShade readings performed under any of the illuminants tested (P<.05), suggesting poor interdevice reliability. Conclusions: The matching repeatability of both devices under natural daylight, a dental unit lamp, and a daylight lamp was not completely satisfactory for clinical practice. The effects of different illuminants seem to be more pronounced for Spectroshade than for Easyshade. The interdevice agreement between the 2 devices tested was poor, suggesting that the 2 devices were not compatible.
机译：问题陈述：使用标准的阴影指南以视觉方式确定牙齿的颜色是一种主观的颜色交流方法，具体取决于诸如光源，操作员和牙齿等变量。可以通过使用比色计或分光光度计等特殊设备来改善对牙齿颜色的评估。但是，这些设备的可重复性和设备间协议尚未得到彻底研究。目的：本研究的目的是评估不同光源（自然日光，牙科单元灯和日光灯）对两种口内分光光度计（Easyshade和SpectroShade）的匹配重复性的影响。材料和方法：由一名操作员使用这两种设备对10名牙科学生中的每名上颌右中切牙和犬牙以及下颌左中切牙进行测量。使用每种设备在3种不同的光源（自然光，牙科灯和日光灯）下对每颗牙齿的颜色进行3次评估。设备读数以Vitapan 3D-Master阴影代码表示。进行统计分析，并使用Spearman相关系数评估一致性水平。结果：两种设备在自然日光，牙科单元灯和日光灯下的读数之间的一致性特别高到中等（P <.01），表明它们的匹配重复性对临床并不完全令人满意。实践。当使用3种不同的光源时，在Easyshade读数中发现了中度到中度到高度的一致性。各个SpectroShade读数的一致程度特别高（P <.001）。在任何测试的光源下进行的Easyshade和SpectroShade读数之间的一致性特别低（P <.05），表明设备间的可靠性较差。结论：两种设备在自然光，牙科单元灯和日光灯下的匹配重复性对于临床实践而言并不完全令人满意。对于Spectroshade而言，与Easyshade相比，不同光源的影响似乎更为明显。被测试的两个设备之间的设备间协议很差，表明这两个设备不兼容。

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