基于孟塞尔颜色系统的口腔内扫描仪的牙色匹配准确性和特征评估：一项体内研究。
Evaluation of accuracy and characteristics of tooth-color matching by intraoral scanners based on Munsell color system: an in vivo study.
机构信息
Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology, National Center of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, No. 22, Zhongguancun South Avenue, Haidian District, Beijing, 100081, China.
Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Center of Stomatology, National Clinical Research Center for Oral Disease, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing, 100081, China.
出版信息
Odontology. 2022 Oct;110(4):759-768. doi: 10.1007/s10266-022-00694-9. Epub 2022 Feb 25.
To compare the accuracy of visual and instrumental methods for tooth-color matching based on three attributes in the Munsell color system and to investigate the characteristics of intraoral scanners for tooth-color matching. Shades of the cervical, middle, and incisal third region of 130 maxillary anterior teeth were matched visually by an experienced prosthodontist (EP) using Vita classical A1-D4 (VC) and Vita System 3D-Master (V3D) shade guides, and digitally by a spectrophotometer (Vita Easyshade V, VE) and two intraoral scanners (3Shape TRIOS 3, T3; TRIOS 4, T4). VE was used as a reference. The reproducibility of the three test groups was examined by repeating the measurements in triplicate. The overall trueness of the three test groups (from high to low) was T3 > EP > T4 for VC values (p < 0.01), and T3, EP > T4 (p < 0.01) for V3D. The trueness of T3 in incisal regions was lower than cervical and middle regions. When hue or lightness was correct, the mismatched chroma in test groups was smaller than VE (p < 0.01). The repeatability of EP was the poorest (p < 0.01). The color-matching trueness of T3 was higher than EP and T4. The reproducibility of intraoral scanners was better than visual methodology.
比较基于 Munsell 颜色系统的三个属性的视觉和仪器方法在牙齿颜色匹配中的准确性，并研究用于牙齿颜色匹配的口腔内扫描仪的特点。通过一名经验丰富的修复科医生（EP）使用 Vita 经典 A1-D4（VC）和 Vita System 3D-Master（V3D）比色指南进行视觉匹配，以及通过分光光度计（Vita Easyshade V，VE）和两个口腔内扫描仪（3Shape TRIOS 3，T3；TRIOS 4，T4）进行数字匹配，对 130 个上颌前牙的颈、中、切三分之一区域的色调进行匹配。VE 用作参考。通过重复三次测量来检查三组测试的可重复性。三组测试（从高到低）的总体准确性为 VC 值的 T3>T3>T4（p<0.01），V3D 的 T3、EP>T4（p<0.01）。T3 在切端区域的准确性低于颈中和中三分之一区域。当色调或明度正确时，测试组的不匹配彩度小于 VE（p<0.01）。EP 的可重复性最差（p<0.01）。T3 的颜色匹配准确性高于 EP 和 T4。口腔内扫描仪的可重复性优于视觉方法。
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