Kurian Nirmal, Varghese Vinaya Susan, Sudharson Nishanth A, Wadhwa Samiksha, Narang Chitvan, Sethi Nivea, Singh Irina
Department of Prosthodontics, Christian Dental College, Ludhiana, Punjab, India.
Department of Conservative Dentistry, Christian Dental College, Ludhiana, Punjab, India.
Dent Res J (Isfahan). 2023 Jun 27;20:69. eCollection 2023.
Visual and advanced instrumental methods are the most common tools for shade selection. The instrumental methods are considered reliable and provide quantifiable values, but the high cost puts them out of the reach of most dentists. Light-correcting devices provide an economical alternative for clinical shade selection. The aim of this study was to assess the reliability of the light-correcting device in clinical shade selection.
The experimental prospective study sample included 60 volunteers aged 18-25 years, with no severe enamel pigmentation or anomaly in anterior maxillary teeth. Two observers performed visual shade matching of the maxillary right central incisor without a light-correcting device and later with a light-correcting device at the same time of the day at an interval of 1 week. The shades were confirmed with the control value obtained by using a spectrophotometer. Each observer was blinded to the shade color selected by the other examiner. The data collected were subjected to the statistical analysis. The shade measured with the light-correcting device and without its use was compared with the control shade obtained by the spectrophotometer. The value closer to the control shade value was considered accurate, and the method used for shade matching would be considered reliable. The Fleiss kappa statistical test was used to assess the reliability of each method. ≤ 0.05 was considered statistically significant.
Using a light-correcting device significantly increased the reliability of the visual shade selection method. When compared to the shades recorded by the spectrophotometer (control), the use of a light-correcting device as an aid in visual shade selection showed more accurate and reliable results as compared to the visual shade selection without a light-correcting device ( < 0.05).
Light-correcting devices can assist in reliable shade selection and allow better communication with the dental laboratory technician to provide predictable esthetic results.
视觉和先进的仪器方法是最常用的比色工具。仪器方法被认为是可靠的，并能提供可量化的值，但成本高昂，大多数牙医难以企及。光校正装置为临床比色提供了一种经济的选择。本研究的目的是评估光校正装置在临床比色中的可靠性。
实验性前瞻性研究样本包括60名年龄在18 - 25岁之间的志愿者，上前牙无严重牙釉质色素沉着或异常。两名观察者在一天中的同一时间，间隔1周，先在不使用光校正装置的情况下对上颌右侧中切牙进行视觉比色，随后使用光校正装置进行比色。通过分光光度计获得的对照值来确认比色结果。每位观察者对另一位检查者选择的比色结果不知情。收集的数据进行统计分析。将使用光校正装置和未使用光校正装置测量的比色结果与分光光度计获得的对照比色结果进行比较。与对照比色值更接近的值被认为是准确的，用于比色匹配的方法将被认为是可靠的。使用Fleiss kappa统计检验来评估每种方法的可靠性。P≤0.05被认为具有统计学意义。
使用光校正装置显著提高了视觉比色方法的可靠性。与分光光度计记录的比色结果（对照）相比，与不使用光校正装置的视觉比色相比，使用光校正装置辅助视觉比色显示出更准确可靠的结果（P<0.05）。
光校正装置有助于进行可靠的比色，并能与牙科实验室技术人员更好地沟通，以提供可预测的美学效果。
