Jan Brandt1,2, Shirley Nelson3,4, Hans-Christoph Lauer3,4, Ulrike von Hehn5, Silvia Brandt3,4. 1. Department of Prosthodontics, Hospital for Dental, Oral and Orthodontic Medicine (Carolinum), Johann Wolfgang Goethe-University Frankfurt am Main, Frankfurt, Germany. brandt@med.uni-frankfurt.de. 2. Poliklinik für Zahnärztliche Prothetik, ZZMK Carolinum, Johann Wolfgang Goethe - Universität Frankfurt am Main, Theodor-Stern-Kai 7, Haus 29, 60596, Frankfurt am Main, Germany. brandt@med.uni-frankfurt.de. 3. Department of Prosthodontics, Hospital for Dental, Oral and Orthodontic Medicine (Carolinum), Johann Wolfgang Goethe-University Frankfurt am Main, Frankfurt, Germany. 4. Poliklinik für Zahnärztliche Prothetik, ZZMK Carolinum, Johann Wolfgang Goethe - Universität Frankfurt am Main, Theodor-Stern-Kai 7, Haus 29, 60596, Frankfurt am Main, Germany. 5. medistat GmbH, Schauenburgerstraße 116, 24118, Kiel, Germany.
Abstract
OBJECTIVES: Tooth colour determination is an essential component in the preservative and prosthetic workflow during production of tooth-coloured restorations. The aim of the study was to compare the clinical suitability of conventional, visual tooth colour determination and digital methods. MATERIALS AND METHODS: Tooth colour of vital, natural central incisors among a total of 107 subjects was determined visually by a dentist (VD) and dental technician (VDT) using VITA Toothguide 3D-MASTER®, digitally by the spectrophotometer VITA Easyshade Advance 4.0 (reference instrument) and Trios®Color intra-oral scanner (test subject). Reliability was examined by repeating the digital measurements of 20 teeth three times. The analysis was based on the recorded 3D-MASTER values and L*a*b/L*C*h parameters. RESULTS: The measuring accuracy was 43.9% with the Trios®Color scanner, 35.5% for VD and 34.6% for VDT. In 25.5% of cases, the scanner's results corresponded with VD and in 33.6% with VDT. The visual methods corresponded with 45.8%. All mean values of the recorded colour differences fell within the clinically acceptable range of ΔE ≤ 6.8. The intra-oral scanner attained repeatability of 78.3% and the VITA Easyshade system of 76.6%. CONCLUSIONS: The Trios®Color intra-oral scanner appears to be a good alternative to the current standard of visual tooth colour determination. The new module attains better results than the visual method and is comparable to the reference instrument. CLINICAL RELEVANCE: Dentistry becomes increasingly digitalized and tooth colour determination devices have generally to be improved. Therefore, the investigation of a new digital device is important for future developments.
OBJECTIVES: Tooth colour determination is an essential component in the preservative and prosthetic workflow during production of tooth-coloured restorations. The aim of the study was to compare the clinical suitability of conventional, visual tooth colour determination and digital methods. MATERIALS AND METHODS: Tooth colour of vital, natural central incisors among a total of 107 subjects was determined visually by a dentist (VD) and dental technician (VDT) using VITA Toothguide 3D-MASTER®, digitally by the spectrophotometer VITA Easyshade Advance 4.0 (reference instrument) and Trios®Color intra-oral scanner (test subject). Reliability was examined by repeating the digital measurements of 20 teeth three times. The analysis was based on the recorded 3D-MASTER values and L*a*b/L*C*h parameters. RESULTS: The measuring accuracy was 43.9% with the Trios®Color scanner, 35.5% for VD and 34.6% for VDT. In 25.5% of cases, the scanner's results corresponded with VD and in 33.6% with VDT. The visual methods corresponded with 45.8%. All mean values of the recorded colour differences fell within the clinically acceptable range of ΔE ≤ 6.8. The intra-oral scanner attained repeatability of 78.3% and the VITA Easyshade system of 76.6%. CONCLUSIONS: The Trios®Color intra-oral scanner appears to be a good alternative to the current standard of visual tooth colour determination. The new module attains better results than the visual method and is comparable to the reference instrument. CLINICAL RELEVANCE: Dentistry becomes increasingly digitalized and tooth colour determination devices have generally to be improved. Therefore, the investigation of a new digital device is important for future developments.
Authors: Javier Ruiz-López; Maria M Perez; Cristina Lucena; Rosa Pulgar; Ana López-Toruño; Maria Tejada-Casado; Razvan Ghinea Journal: Clin Oral Investig Date: 2022-05-31 Impact factor: 3.606
Authors: José Lucas Dos Santos Araújo; Mariana Massi Afonso Alvim; Márcio José da Silva Campos; Ana Carolina Morais Apolônio; Fabíola Galbiatti Carvalho; Rogério Lacerda-Santos Journal: Eur J Dent Date: 2021-08-24