scholarly journals Comparison between Color Spaces of Vita Lumin Shade Guide with Natural Teeth in Bengaluru Population using Spectrocolorimeter: An in vivo Study

2017 ◽  
Vol 18 (8) ◽  
pp. 683-687
Author(s):  
Deepak Mehta ◽  
Nishant Gupta ◽  
Rohit M Shetty ◽  
Adarsh N Bhat ◽  
Gopalakrishna Srivatsa ◽  
...  
Keyword(s):  
Local Population ◽  
Color Space ◽  
Color Measurement ◽  
Color Spaces ◽  
B Values ◽  
Natural Teeth ◽  
Shade Matching ◽  
Shade Guide ◽  
Shade Selection

ABSTRACT Aim The aim of this study is to compare the color space of Vita Lumin shade guide (SG) with the natural teeth of the local population. Materials and methods A total of 100 maxillary central incisors (100 patients) were subjected to color measurement with a spectrocolorimeter. For each tooth, L*, a*, b* values were recorded. All the shade tabs of Vita Lumin SG were analyzed with a spectrocolorimeter to define the color space covered by the Vita Lumin SG. The L*a*b* values of natural teeth were plotted on separate scattered diagrams and compared. Results About two out of three attributes (luminance and blue spectrum) of the local population of Bengaluru displayed a broader range than those available in Vita Lumin SG. Conclusion The local population requires an SG with an extended range, covering a higher luminance spectrum and broader blue spectrum. Clinical significance Esthetic restorations require accurate shade matching with the adjacent natural teeth, SGs being the mean of shade selection and communication should be comparable to the natural teeth. How to cite this article Shetty RM, Bhat AN, Gupta N, Mehta D, Srivatsa G, Singh I. Comparison between Color Spaces of Vita Lumin Shade Guide with Natural Teeth in Bengaluru Population using Spectrocolorimeter: An in vivo Study. J Contemp Dent Pract 2017;18(8):683-687.

In Vitro and In Vivo Evaluations of Three Computer-Aided Shade Matching Instruments

2012 ◽  
Vol 37 (3) ◽  
pp. 219-227 ◽  
Author(s):  
K Yuan ◽  
X Sun ◽  
F Wang ◽  
H Wang ◽  
J Chen
Keyword(s):  
In Vivo Model ◽  
In Vivo Models ◽  
B Values ◽  
Significant Difference ◽  
Computer Aided ◽  
Natural Teeth ◽  
Shade Matching ◽  
Vitro Model

SUMMARY This study evaluated the accuracy and reliability of three computer-aided shade matching instruments (Shadepilot, VITA Easyshade, and ShadeEye NCC) using both in vitro and in vivo models. The in vitro model included the measurement of five VITA Classical shade guides. The in vivo model utilized three instruments to measure the central region of the labial surface of maxillary right central incisors of 85 people. The accuracy and reliability of the three instruments in these two evaluating models were calculated. Significant differences were observed in the accuracy of instruments both in vitro and in vivo. No significant differences were found in the reliability of instruments between and within the in vitro and the in vivo groups. VITA Easyshade was significantly different in accuracy between in vitro and in vivo models, while no significant difference was found for the other two instruments. Shadepilot was the only instrument tested in the present study that showed high accuracy and reliability both in vitro and in vivo. Significant differences were observed in the L*a*b* values of the 85 natural teeth measured using three instruments in the in vivo assessment. The pair-agreement rates of shade matching among the three instruments ranged from 37.7% to 48.2%, and the incidence of identical shade results shared by all three instruments was 25.9%. As different L*a*b* values and shade matching results were reported for the same tooth, a combination of the evaluated shade matching instruments and visual shade confirmation is recommended for clinical use.

scholarly journals Comparison of Visual and Digital Color Measurement Methods on Anterior Natural Teeth

2018 ◽  
Vol 22 (2) ◽  
pp. 87-92
Author(s):  
Sait Ege Eryürük ◽  
Canan Hekimoğlu ◽  
Elif Tuba Akçin ◽  
Yeliz Çavuşoğlu
Keyword(s):  
Weighted Kappa ◽  
Kappa Coefficient ◽  
Measurement Methods ◽  
Color Measurement ◽  
Central Incisor ◽  
Digital Device ◽  
Natural Teeth ◽  
Digital Methods ◽  
Shade Guide ◽  
Weighted Kappa Coefficient

SummaryBackground/Aim: The purpose of this study was to evaluate compatibility between visual and digital color measurement methods.Material and Methods: The color measurement components of intact natural maxillary right central incisor and left canine teeth of eighty patients were measured with visually shade guide and, digitally, with digital device. The color matchings were performed for each teeth on labial surfaces divided into three regions: cervical, middle and incisal. Ligthness, MLR (M: means middle hue, L designates greener, R designates redder) and chroma levels were assessed for each tooth on divided regions respectively. Measurements were performed by the same and experinced dentist with healthy eyes. The data were analyzed with Kappa and weighted Kappa coefficient (p< 0.05).Results: The compatibility between visual and digital methods did not exist for MLR and chroma. The compatibility between both methods were determined only for ligthness of maxillary central and canine teeth at all regions of labial surfaces.Conclusions: There was compatibility only for ligthness of intact natural teeth at all regions with both methods.

In Vitro Evaluation of New Dental Software for Shade Matching

2013 ◽  
Vol 587 ◽  
pp. 360-365
Author(s):  
Bogdan Culic ◽  
Vasile Prejmerean ◽  
Cristina Gasparik ◽  
Carina Culic ◽  
Cristian Dragos ◽  
...  
Keyword(s):  
Color Space ◽  
Computer Software ◽  
Tooth Color ◽  
B Values ◽  
Color Selection ◽  
Statistical Indicator ◽  
Lab Color Space ◽  
Shade Matching ◽  
Cie Lab

In this study we evaluate a new computer software developed for determining tooth color parameters obtained from digital images taken in a general practice working conditions. In order to evaluate the accuracy of the program, we used as samples dental shade tabs. The tabs were measured using a dental spectrophotometer, and then photographed and measured using our program (Toodent). L, a, b values of the CIE Lab color space were obtained. The results were also automatically expressed in dental shade tab code. The results analysis was made by comparing the L, a, b values obtained by the program, with spectrophotometer ones taken from the same shade tab. A statistical indicator was created in order to evaluate the accuracy of the program. Further evaluation of the program shall be made, in order to be used in routine clinical color selection.

scholarly journals Use of a shade guide to test the perception and prevalence of natural tooth colour in people of Nepal

2018 ◽  
Vol 10 (1) ◽  
pp. 97-99
Author(s):  
Manu Rana ◽  
Sandeep Sharma
Keyword(s):  
Small Sample Size ◽  
Small Sample ◽  
Market Demand ◽  
Maxillary Central Incisor ◽  
The People ◽  
Natural Teeth ◽  
Shade Matching ◽  
Colour Saturation ◽  
Shade Guide ◽  
Tooth Colour

Background: Recent advances in colour matching have been driven by the market demand for high-quality esthetic restorations. Improved shade guides, availability of shade-taking devices and research in the area of human colour vision have improved the potential of clinicians to achieve excellent colour matched restorations. A thorough understanding of appearance attributes of natural teeth is required along with these new tools to maximize shade matching results. Aims and Objectives: The aim of the present investigation is to determine tooth shade among the people of Nepal. Materials and Methods: In the present study, shade of cervical, middle and incisal third of the facial surface of natural maxillary central incisor was measured with digital colorimeter, VITA Easy shade Advance 4.0. It is an optical reading device that can assess the wavelengths reflected back to its sensors. Lighting in operatory does not affect the shade measurement. It is extremely accurate. The limitation of study was its small sample size. Result: The shade obtained in the cervical third of tooth is 1M2 (37.33%), in the middle 1M1 (32.88%), and in the incisal third 2M1 (37.33%). Value 1 indicates lighter tooth colour and colour saturation is up to 2. Conclusion: It was concluded that the most prevalent shade in cervical third was 1M2, middle third was 1M1 and incisal third was 2M1.

The Influence of Dental Shade Guides and Experience on the Accuracy of Shade Matching

2016 ◽  
Vol 17 (1) ◽  
pp. 22-26 ◽  
Author(s):  
Mohammadreza Nakhaei ◽  
Jalil Ghanbarzadeh ◽  
Samin Alavi ◽  
Sahar Amirinejad ◽  
Hamidreza Rajatihaghi
Keyword(s):  
Calculated Data ◽  
Color Difference ◽  
Dental Students ◽  
Influential Factor ◽  
Color Measurement ◽  
Mean Values ◽  
Factors Affecting ◽  
Shade Matching ◽  
The Mean ◽  
Shade Guide

ABSTRACT Aim There is limited and inconsistent information on some factors affecting visual shade selection. The aim of this study was to evaluate the influence of shade guide type and professional experience on shade-matching results. Materials and methods Thirty Dental students (DS), 30 General dentists (GDs) and 30 Dental specialists (S) participated in this study. The participants were asked to match six target tabs using two dental shade guides: Vitapan Classical (VC) and Vitapan 3D-Master (3D). An intraoral spectrophotometer was used for color measurement of target tabs and selected tabs. The color difference (Conflict of interest: NoneE) values between the target tab and selected tab were calculated. Data were analyzed using analysis of variance (ANOVA) and paired t-test (α = 0.05). Results of the first five best matches for each target tab were expressed as ΔE1 to ΔE5. Differences in the mean values of ΔE1 to ΔE5 between VC and 3D were compared using descriptive statistics. Results There were no significant differences among the three participating groups in ΔE values when the 3D was used (p = 0.389). However, significant differences were found with VC (p < 0.001). The ΔE values achieved from the 3D were significantly lower than those from VC for DS and S (p = 0.001 and p < 0.001, respectively). For each of the first five best matches, the mean ΔE values from the 3D were smaller than the corresponding values of VC. Conclusion The type of dental shade guide affected the shadematching results. The level of experience was not found to be an influential factor in shade matching when 3D-Master shade guide was used. Clinical significance Compared with Vitapan Classical shade guide, use of the Vitapan 3D-Master shade guide improves shade-matching results. How to cite this article Nakhaei M, Ghanbarzadeh J, Amirinejad S, Alavi S, Rajatihaghi H. The Influence of Dental Shade Guides and Experience on the Accuracy of Shade Matching. J Contemp Dent Pract 2016;17(1):22-26.

scholarly journals A Clinical Study to Correlate Maxillary Anterior Natural Teeth with that of the Commercially Available Acrylic and Porcelain Shade Guides

2013 ◽  
Vol 14 (3) ◽  
pp. 427-433 ◽  
Author(s):  
Punit RS Khurana ◽  
P Vivek Thomas ◽  
Soudhamini V Rao ◽  
R Balamuragan ◽  
Mohan Preet Singh
Keyword(s):  
Clinical Study ◽  
Dental Treatment ◽  
Color Range ◽  
Natural Teeth ◽  
Logical Order ◽  
Shade Guide ◽  
Shade Selection

ABSTRACT The success of the dental treatment as perceived by our patients is often preferentially evaluated on the appearance of the restoration. Usually visual determination is unreliable and inconsistent, complicated by the inability of the shade guide to cover the entire dental color range and also there is lack of logical order of arrangement of the tabs. Hence a clinical study is planned to perform visual shade selection in standardized conditions to correlate the shades of maxillary anterior natural teeth in adult subjects of Davengere district origin to one acrylic and three porcelain shade guides commercially available in India. How to cite this article Khurana PRS, Thomas PV, Rao SV, Balamuragan R, Singh MP. A Clinical Study to Correlate Maxillary Anterior Natural Teeth with that of the Commercially Available Acrylic and Porcelain Shade Guides. J Contemp Dent Pract 2013;14(3):427-433.

scholarly journals Novel Trends in Dental Color Match Using Different Shade Selection Methods: A Systematic Review and Meta-Analysis

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 468
Author(s):  
Louis Hardan ◽  
Rim Bourgi ◽  
Carlos Enrique Cuevas-Suárez ◽  
Monika Lukomska-Szymanska ◽  
Ana Josefina Monjarás-Ávila ◽  
...  
Keyword(s):  
Systematic Review ◽  
Conventional Method ◽  
Global Analysis ◽  
Meta Analysis ◽  
Accurate Determination ◽  
Selection Methods ◽  
Color Match ◽  
Shade Matching ◽  
Shade Guide ◽  
Shade Selection

Since color matching is considered a subjective procedure, accurate shade choice is often the most challenging stage of recreating the natural appearance of teeth. Furthermore, accurate determination of tooth color is imperative for the final outcome of dental restorations. The purpose of this research is to assess the accuracy of color match between diverse shade selection methods throughout a systematic review and meta-analysis. Two independent investigators (L.H. and R.B.) screened the literature in five electronic databases. Randomized controlled trials or in vitro papers studying the effect of using either digital shade selection or visual shade selection on the accuracy of color match were included. A total of 13 manuscripts comprised the meta-analysis. Color difference (ΔE) between restorations where the shade matching was performed by the conventional method was greater than those where the shade matching was performed by computerized methods (p = 0.007). According to the subgroup analysis, only the use of digital photographs for shade matching showed a reduction in the (ΔE) (p < 0.0001), while the use of a spectrophotometer has no advantages over the use of visual shade guide tabs (p = 0.57). On the other hand, global analysis showed that incorrect shade matching was higher when the conventional method using shade guide tabs was used (p < 0.001), irrespective of whether a spectrophotometer or a digital camera was used (p < 0.001). This study concluded that the use of digital photography and spectrophotometric measurements led to fewer color differences and less incorrect shade matching than conventional methods using color shade tabs.

TOOTH SHADE & ITS CORRELATION WITH SKIN COLOR – ITS PERCEPTION ON SMILE ATTRACTIVENESS

2021 ◽  
pp. 29-31
Author(s):  
S. Anitha Rao ◽  
Jangala Jahnav ◽  
Heena Firdous ◽  
T. Muralidhar
Keyword(s):  
Visual Analog Scale ◽  
Skin Color ◽  
Skin Tone ◽  
Analog Scale ◽  
Color Code ◽  
Tooth Color ◽  
Natural Teeth ◽  
Shade Guide ◽  
Shade Selection ◽  
Light Medium

Introduction: Shade selection is a crucial step in providing patients with a cosmetic restoration that blends in seamlessly with their dentition. Natural teeth are known to possess different shades. Many factors affect the color of natural teeth. One of the most critical variables and most often ignored is light. Another aspect that can affect the colors of natural teeth is the color imparted by different skin complexions. The objective of this study was to determine if skin tone and tooth color had the same inuence on smile attractiveness. Materials And Methods: A photograph of a woman's smile was digitally modied to obtain 16 images. Using the MAC color code as a reference, the skin tone was changed to four different tones (NW25: light, NC42:light medium, NW43:medium dark, NW50:dark), and the tooth shade was changed to four different tones (A1, A2, A3, A4) using the VITAPAN Classical shade guide. A total of 94 people completed a Google form questionnaire in which they scored each picture on the Visual Analog Scale for attractiveness. Results: Images NW25A1 and NW43A4 obtained the highest and lowest visual analog scale values, respectively. Conclusion: The overall results suggest that, regardless of the skin color, a lighter tooth shade has a major impact on smile attractiveness.

scholarly journals Reliability of Two Color Selection Devices in Matching and Measuring Tooth Color

2011 ◽  
Vol 12 (1) ◽  
pp. 19-23 ◽  
Author(s):  
Carmen Llena ◽  
Esther Lozano ◽  
Jose Amengual ◽  
Leopoldo Forner
Keyword(s):  
Correlation Coefficient ◽  
Clinical Significance ◽  
Color Measurement ◽  
Tooth Color ◽  
B Values ◽  
Color Selection ◽  
Color Changes ◽  
Measurement Devices ◽  
Shade Guide ◽  
Paired T Test

ABSTRACT Objective The objective of this study was to investigate the intra and interdevice reliability of two tooth color measurement devices: EasyShade (ES) and SpectroShade Micro (SSM). Materials and methods Tooth color was measured in six maxillary and mandibular. L*, a* and b* values and shade matches to VITA Classical and Vitapan 3D-Master shade guide systems were determined for all teeth. ÄE was assessed. Paired t-test and correlation coefficient (ICC) were used. Results Intradevices no significant differences (p > 0.05) were found between L*, a*, b*. Interdevice L* and b* were significantly higher for ES (p < 0.05), while a* was significantly higher for SSM (p < 0.05). ÄE showed no significant interdevice difference (p > 0.05). Intradevices ICC values were higher for ES but not significant (p > 0.05). Discussion The null hypotheses that they present no differences in their color measuring within devices or shade systems is accepted, but the results allow to reject the null hypotheses that they present no differences in their color measuring or shade systems between devices. Conclusion Both EasyShade (ES) and SpectroShade Micro (SSM) show excellent repeatability and so they can be used in office to evaluate tooth color or to assess color changes after treatment. Clinical significance Dental color can be diagnosed using dental spectrophotometers, allowing to detect in an objective way therapeutic dental color changes. How to cite this article Llena C, Lozano E, Amengual J Forner L. Reliability of Two Color Selection Devices in Matching and Measuring Tooth Color. J Contemp Dent Pract 2011; 12(1):19-23.

scholarly journals Evaluation of accuracy of shade selection using two spectrophotometer systems: Vita Easyshade and Degudent Shadepilot

2017 ◽  
Vol 11 (02) ◽  
pp. 196-200 ◽  
Author(s):  
Mohammad Hassan Kalantari ◽  
Seyed Ahmad Ghoraishian ◽  
Mina Mohaghegh
Keyword(s):  
Computer Aided Design ◽  
In Vitro Study ◽  
Color Selection ◽  
Visual Color ◽  
Computer Aided ◽  
Shade Matching ◽  
Aided Design ◽  
Shade Guide ◽  
Shade Selection

ABSTRACT Objective: The aim of this In vitro study was to evaluate the accuracy of shade matching using two spectrophotometric devices. Materials and Methods: Thirteen patients who require a full coverage restoration for one of their maxillary central incisors were selected while the adjacent central incisor was intact. 3 same frameworks were constructed for each tooth using computer-aided design and computer-aided manufacturing technology. Shade matching was performed using Vita Easyshade spectrophotometer, Shadepilot spectrophotometer, and Vitapan classical shade guide for the first, second, and third crown subsequently. After application, firing, and glazing of the porcelain, the color was evaluated and scored by five inspectors. Results: Both spectrophotometric systems showed significantly better results than visual method (P < 0.05) while there were no significant differences between Vita Easyshade and Shadepilot spectrophotometers (P < 0.05). Conclusion: Spectrophotometers are a good substitute for visual color selection methods.

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