Analysis of color and fluorescence of different dentin ceramics and natural human dentin's to enhance shade matching

Author(s):  
Faezeh Atri ◽  
Mahdi Safi ◽  
Soraya Salehzadeh ◽  
Jalil Izadi ◽  
Pejman Esmaeili Fallah ◽  
...  
Keyword(s):  

2016 ◽  
Vol 20 (2) ◽  
pp. 104-110 ◽  
Author(s):  
A. Dilek Nalbant ◽  
Yeşim Göknur Babaç ◽  
İrem Türkcan ◽  
Kaan Yerliyurt ◽  
Cihan Akçaboy ◽  
...  

Summary Aim: Although visual color determination is the most frequently applied method in dentistry, instrumental color analysis offers advantages like objectivity, measurability and rapidity. The aim of this study was to evaluate the natural teeth color in teeth without any restoration visually, and by using a computerized shade measuring and analyzing system in the population.Materials and Methods: 202 patients were inspected. Before instrumental shade matching visual matching was done by the inspector with Vitapan 3D Master Shade Guide in the day light. Images were taken with computerized shade measuring and analyzing system from patients’ natural right or left maxillary incisors and canines without any restoration. Then these images were evaluated by the original software of its own.Results: Value differences between visual and instrumental shade matching were statistically significant. Darker value levels were obtained with instrumental measurement. The distribution of hue was more reddish in instrumental examination than visual examination. Significant difference was found at cervical and middle third of the tooth in both visual and instrumental determination of chroma. Chroma of the tooth was higher at these two regions in visual assessment.Conclusions: Teeth colors were distributed more uniform in visual shade matching compared to instrumental matching. However, some teeth shades were more common in instrumental matching. Value scores were found higher with instrumental shade matching. Individual selection of shades for each tooth and different regions of a tooth instead of a single color is considered to be a factor to increase the success of the restoration.



Author(s):  
Ling Zhang ◽  
Jing Fan ◽  
Min Tian ◽  
Guofeng Wu ◽  
Shaofeng Zhang ◽  
...  


2016 ◽  
Vol 32 (1) ◽  
pp. 82-92 ◽  
Author(s):  
Oscar E. Pecho ◽  
Razvan Ghinea ◽  
Rodrigo Alessandretti ◽  
María M. Pérez ◽  
Alvaro Della Bona




2019 ◽  
Vol 22 (3) ◽  
pp. 275
Author(s):  
MN Hombesh ◽  
B Praveen ◽  
HarshVardhan Sinha ◽  
BG Prasanna ◽  
Bhuvana Sachin ◽  
...  


Dentistry ◽  
2017 ◽  
Vol 07 (08) ◽  
Author(s):  
Ioannis Brokos ◽  
Minos Stavridakis ◽  
Ivo Krejci


2018 ◽  
Vol 52 (2) ◽  
pp. 132-139 ◽  
Author(s):  
Žarko Udiljak ◽  
Davor Ileš ◽  
Dubravka Knezović Zlatarić ◽  
Robert Ćelić




2009 ◽  
Vol 54 (5) ◽  
pp. 244
Keyword(s):  


2013 ◽  
Vol 70 (10) ◽  
pp. 929-934 ◽  
Author(s):  
Ana Todorovic ◽  
Aleksandar Todorovic ◽  
Aleksandra Spadijer-Gostovic ◽  
Vojkan Lazic ◽  
Biljana Milicic ◽  
...  

Background/Aim. Color matching in prosthodontic therapy is a very important task because it influences the esthetic value of dental restorations. Visual shade matching represents the most frequently applied method in clinical practice. Instrumental measurements provide objective and quantified data in color assessment of natural teeth and restorations. In instrumental shade analysis, the goal is to achieve the smallest ?E value possible, indicating the most accurate shade match. The aim of this study was to evaluate the reliability of commercially available ceramic shade guides. Methods. VITA Easyshade spectrophotometer (VITA, Germany) was used for instrumental color determination. Utilizing this device, color samples of ten VITA Classical and ten VITA 3D - Master shade guides were analyzed. Each color sample from all shade guides was measured three times and the basic parameters of color quality were examined: ?L, ?C, ?H, ?E, ?Elc. Based on these parameters spectrophotometer marks the shade matching as good, fair or adjust. Results. After performing 1,248 measurements of ceramic color samples, frequency of evaluations adjust, fair and good were statistically significantly different between VITA Classical and VITA 3D Master shade guides (p = 0.002). There were 27.1% cases scored as adjust, 66.3% as fair and 6.7% as good. In VITA 3D - Master shade guides 30.9% cases were evaluated as adjust, 66.4% as fair and 2.7% cases as good. Conclusion. Color samples from different shade guides, produced by the same manufacturer, show variability in basic color parameters, which once again proves the lack of precision and nonuniformity of the conventional method.



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