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Prosthesis Coloring (0):
Recent article
Prosthesis Coloring
Dental update (38)6 2011
Abstract
The fabrication of ear prosthesis is considered by many prosthetists to be one of the more difficult replacements in maxillofacial reconstruction. The severe undercuts and pronounced convolutions of the ear's surface present a challenge in simulating a natural proportioned prosthesis. The mould for t...
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PMID: 21905355
PDF is available here.
PDF is available here.
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Dental update (38)6 2011
Abstract
Audio, Transactions of the IRE Professional Group on (142 Suppl 2) 2011
Abstract
Esthetic dental treatment for young adults can be challenging. Practitioners often use direct composite bonding in children and teenagers, and often it serves them for many years. However, direct composite bonding has its limitations (such as staining and chipping), and bonded porcelain often is need...
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PMID: 21454835
PDF is available here.
PDF is available here.
Abstract
High-quality aesthetic restorations that look great, function ideally, and last can only be predictably produced through implementation of excellent communication techniques and systems between the doctor and ceramist. With the availability of technology and the Internet, it is now easy to involve th...
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PMID: 21473999
PDF is available here.
PDF is available here.
Abstract
Achieving an optimal esthetic result when replacing missing teeth with implant-supported restorations in the esthetic zone is a demanding surgical and restorative challenge. This clinical report describes the use of a cantilevered, cemented, implant-supported restoration with gingiva-colored ceramic...
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PMID: 20654762
PDF is available here.
PDF is available here.
Abstract
Acrylic resins have been widely used due to their acceptable esthetics and desirable characteristics such as easy handling, good thermal conductivity, low permeability to oral fluids and color stability. Flexible resins were introduced on the market as an alternative to the use of conventional acryl...
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PMID: 20339724
PDF is available here.
PDF is available here.
Abstract
To evaluate whether post materials affect the color of roots, composite cores, and all-ceramic crowns.
Forty extracted human incisors were divided into four groups. White posts made of zirconia (Zi) or glass fiber (Gf) and gray posts made of titanium (Ti) or carbon fiber (Cf) were randomly assigned...
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PMID: 20165745
PDF is available here.
PDF is available here.
General dentistry (58)4 2010
Abstract
This study evaluated the effect of cigarette smoke on the color of composite resins, with and without the application of a surface sealant and before and after the restorative material was repolished. Twenty composite resin specimens were divided into two groups (n = 10); one of which received a sur...
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PMID: 20591779
PDF is available here.
PDF is available here.
General dentistry (58)4 2010
Abstract
General dentistry (58)4 2010
Abstract
I and II restorations were placed in the permanent teeth of 20 patients. Using United States Public Health Services criteria, two investigators evaluated the restorations immediately after placement and again after 12 and 36 months, examining color match, marginal discoloration, marginal integrity,...
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PMID: 20591781
PDF is available here.
PDF is available here.
General dentistry (58)4 2010
Abstract
Abstract
The noninferiority of CPE could not be established because of the early termination of the trial. Previous users of silicone prostheses preferred those made of silicone. However, new users expressed no preference between prostheses fabricated with the low-cost CPE or silicone. The authors have devel...
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PMID: 20552094
PDF is available here.
PDF is available here.
Abstract
This study was designed to evaluate color differences (DE) between intended and fabricated shades of various metal-ceramic complexes using visual and instrumental shade determination. Forty-two master disks were made to represent every tab in two shade guides. The shades of the master disks were det...
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PMID: 20305853
PDF is available here.
PDF is available here.
Journal of Dentistry (38) 2010
Abstract
To evaluate the influence of various shades of resin cements on the final color of ceromer veneers and analyse the agreement of resin cements and corresponding try-in pastes.
Ceromer disks (Ceramage, 1.0mm×10mm diameter) were bonded to resin background disks (3.0mm×10mm diameter) using five shades...
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PMID: 20472022
PDF is available here.
PDF is available here.
Journal of Dentistry (38) 2010
Abstract
To review current status of hand held systems for tooth color matching in vivo and corresponding research.
"Medline" database from 1981 to 2010 were searched electronically with key words tooth, teeth, color and dentistry.
Spectrophotometers, colorimeters and imaging systems are useful and relevant...
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PMID: 20621154
PDF is available here.
PDF is available here.
Journal of Dentistry (38 Suppl 2) 2010
Abstract
The aim of this study was to assess how different shades of try-in pastes, uncured and cured resin cements influence the overall color of porcelain veneer restorations.
Porcelain veneers of shade Vita 1M1 VM7 and 1mm thick were applied to bovine teeth using three shades of resin cement and their try...
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PMID: 20801184
PDF is available here.
PDF is available here.
Journal of Dentistry (38 Suppl 2) 2010
Abstract
Final aesthetic performance of all-ceramic restorations is influenced by the thickness ratio of core and porcelain ceramics. This study aimed to identify and quantify the effect of increased dentin porcelain thickness on the color and color coordinates of all-ceramic specimens.
Lava and IPS e.max Pr...
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PMID: 20732382
PDF is available here.
PDF is available here.
Journal of Dentistry (38 Suppl 2) 2010
Abstract
The objective of the study was to determine the perceptibility and acceptability thresholds for dental ceramics using CIEDE2000 (ΔE(00)) and CIELAB (ΔE(ab)(*)) color difference formulas and a novel TSK Fuzzy Approximation.
A 13-observer panel performed independent observations of perceptibility an...
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PMID: 20670670
PDF is available here.
PDF is available here.
Journal of Dentistry (38 Suppl 2) 2010
Abstract
The aim of this study was to evaluate whether simulated severe red and green color vision deficiency (CVD) influenced color matching results and to investigate whether training with Toothguide Trainer (TT) computer program enabled better color matching results.
A total of 31 color normal dental stud...
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PMID: 20659524
PDF is available here.
PDF is available here.
Journal of Dentistry (38 Suppl 2) 2010
Color stability of pigmented maxillofacial silicone elastomer: effects of nano-oxides as opacifiers.
Abstract
This study evaluated the effects of nano-oxides on the color stability of pigmented silicone A-2186 maxillofacial prosthetic elastomers before and after artificial aging.
Each of three widely used UV-shielding nano-sized particle oxides (TiO(2), ZnO, CeO(2)), based on recent survey of the industry a...
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PMID: 20472021
PDF is available here.
PDF is available here.
Journal of Dentistry (38 Suppl 2) 2010
Abstract
To determine the effect of thickness of porcelain veneers constructed from CAD-CAM on their final color when two resin cements were used.
Buccal surfaces of extracted sound human molars with shade 3M2 [verified using digital spectrophotometer (Vita Easyshade-Vident)] were reduced to expose flat enam...
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PMID: 20493232
PDF is available here.
PDF is available here.
Journal of Dentistry (38 Suppl 2) 2010
Abstract
The aim of this study is to compare the influence of the opaque application method on the adhesion and final shade of porcelain-fused-to-metal restorations.
Four samples (n=12) were cast in a NiCrMo alloy and opaqued using three application methods: aerosol-spray (one application), aerosol-spray (tw...
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PMID: 20813151
PDF is available here.
PDF is available here.
Journal of Dentistry (38 Suppl 2) 2010
Abstract
The objective of this study was to compare the L*C*h° color coordinates of dental color-measuring devices with those of a spectrophotometric reference system.
The International Commission on Illumination (CIE) L*C*h° color coordinates of ceramic samples, matching the colors of the VITA Linearguide...
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PMID: 20659526
PDF is available here.
PDF is available here.
Journal of Dentistry (38 Suppl 2) 2010
Abstract
Journal of Dentistry (38 Suppl 2) 2010
Abstract
Teeth in a patient's mouth in a dental office, or in the natural environment, represent very complex stimuli for the human color vision system. Predicting their perceived color is a daunting task at best. Colorimetry is designed mainly for the evaluation of uniform, flat, opaque, materials of fairly...
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PMID: 20472020
PDF is available here.
PDF is available here.
Abstract
Analysis of the data indicated good overall interexaminer reliability for the Vita Classical shade guide (ICC = 0.62); however, the data showed poor agreement between the two shade selection techniques (ICC = 0.27). CONCLUSION: This study found no significant difference in the accuracy of shade sele...
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PMID: 20000193
PDF is available here.
PDF is available here.
Abstract
Ratios of deltaE*ab values by the illuminant were 0.90-1.17, 0.95-1.07 and 0.99-1.06 for the VITA, the CHRO and the 3D-M shade guide, respectively. Ratios of the hue angle shifts by the illuminant were from -1.6 to 1.8 for the VITA, from -7.3 to 1.2 for the CHRO and from -1.2 to 3.1 for the 3D-M. Ch...
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PMID: 20178211
PDF is available here.
PDF is available here.
Abstract
We will address the fact that numerous basic scientific publications point to a rationale for this practice although it is often difficult to derive clear-cut evidence from clinical epidemiological studies for the preventive use of yellow artificial lenses. In the first part we refer to studies show...
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PMID: 19603376
PDF is available here.
PDF is available here.
Abstract
Color difference (deltaE*ab) was in the range of 0.6 to 0.8 for bovine dentin, 1.3 to 3.4 for A2-veneer layered specimens and 1.6 to 4.2 for A3-veneer layered specimens. Differences in color and parameters were significantly influenced by the brand of the ceramics and the combination of illuminants...
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PMID: 19626968
PDF is available here.
PDF is available here.
Abstract
We present our application of rapid prototyping technique and report our case series of 10 patients, two of which are presented in detail....
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PMID: 19276832
PDF is available here.
PDF is available here.
Dentistry today (28)3 2009
Abstract
Abstract
No statistically significant differences were found among the ceramic systems examined. The recorded differences in color between A2 porcelain disks and corresponding VITA shade tabs were closer (mean delta E = 2.50) than those recorded for shade A3 (mean delta E = 3.84) and shade A3.5 (mean delta E...
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PMID: 19281108
PDF is available here.
PDF is available here.
Abstract
Abstract
VRM measurements were carried out on a cohort of 48 individuals during spring. The mean age was 40.8 years (+/- 11.7 years). Statistically significant interactions between body site, distance from the light source, and L*, a*, and b* values were found. L* values decreased and a* and b* values increa...
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PMID: 19918601
PDF is available here.
PDF is available here.
Abstract
The aim of this study was to investigate color matching under natural daylight and daylight lamp conditions. Twenty-nine preclinical students underwent a training course and then matched randomly chosen shade tabs of Vita 3D-Master Shade Guide under both natural daylight and daylight lamp conditions...
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PMID: 19260433
PDF is available here.
PDF is available here.
Abstract
This clinical report presents a novel approach that integrates a new optical digitizing (scanning) technique, a three-dimensional ocular prostheses database, and the Selective Laser Sintering technique to achieve the computer-aided design and manufacture of an orbital prosthesis. An optical-structur...
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PMID: 19548414
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
Measurements of the color of natural and restorative craniofacial and dental materials have many important applications to clinical practice and research. Although the specification of color at the level of the human observer involves only three dimensions or a color difference between two colors, a...
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PMID: 19406551
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
CIELAB and CIEDE2000 color differences ranged from 3.9 to 22.8 and from 2.1 to 13.8, respectively. None of the materials proved, an acceptable CIELAB color match to any of the shades tested. CONCLUSION: When various shade tabs of Vitapan Classical shade guides were compared with correspondent tabs m...
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PMID: 19500895
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
Yellow ochre mixed with all opacifiers at all intervals had increased DeltaE* values significantly from 0.7-2.1 up to 3.8-10.3. When mixed groups were considered, at 5%, Gk exhibited the smallest color changes, followed by Td
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
A new whiteness formula (WIO) was developed by optimising the original CIE whiteness formula (WIC) and it was found that WIO gave the best performance for predicting tooth whiteness based on the laboratory results. A total of 88 NHS patients repeated the same visual experiments under typical clinica...
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PMID: 19501446
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
On average, esthetic prosthetic treatment resulted in reduced central incisor width-to-height ratio, increased proportional width of the mesially positioned tooth of adjacent anterior teeth and reduced lateral incisor offset. The mean values of treatments by GPs and prosthodontists were not statisti...
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PMID: 19493605
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
Linearguide 3D-Master enabled better shade matching results compared to Toothguide 3D-Master (p<0.05). Both 3D-Master shade guides exhibited significantly smaller DeltaE* values for the first 10 matches compared to Vitapan Classical (p<0.001). Linearguide 3D-Master was superior in a subjective evalu...
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PMID: 19329240
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
By using spectral imaging techniques, the dental practitioner can capture accurate information about the physical properties of teeth and human skin of the patient. This image data is useful for matching the spectral reflectance of prosthetics materials to the biological tissue of the patient, there...
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PMID: 19523739
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
Composites designated for whitened teeth have different levels of color and contrast ratio. Awareness of the optical properties of the composites allows the operator to choose the appropriate materials to mimic the remaining tooth structure....
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PMID: 19539872
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
Mean DeltaE* value between the restorations and natural teeth was 1.6. Mean DeltaE* between contralateral natural teeth was 0.9. Incisal areas of natural teeth exhibited greater differences in color than other compared areas. CONCLUSION: A DeltaE*=1.6 represented the color difference that could not...
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PMID: 19423209
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
The mean shade matching score (S.D.) for all participants was 41 (21). The score for female and male participants was 38 (20) and 44 (21), respectfully (p<0.001). The difference in scores between dental students, 42 (20), and dental professionals, 39 (21), was not statistically significant. CONCLUSI...
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PMID: 19520478
PDF is available here.
PDF is available here.
Journal of Dentistry (37 Suppl 1) 2009
Abstract
Dentistry today (28)1 2009
Abstract
Dental Materials (24)12 2008
Abstract
(1) Spectral reflectance in the short-wavelength range systematically decreased with increasing chroma number (M1, M2, and M3) when compared within the same value (lightness) group (1M, 2M, 3M, 4M, and 5M). (2) Spectral reflectance decreased systematically across the whole visible spectrum with incr...
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PMID: 18514301
PDF is available here.
PDF is available here.
Abstract
Prosthetic option is a valuable technique for the reconstruction of ear defect. The primary indication for prosthetic reconstruction of ear defect in the present study is acquired ear deformity; mainly due to road traffic crashes....
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PMID: 19169340
PDF is available here.
PDF is available here.
Abstract
Several ocular and orbital disorders require surgical intervention that may result in ocular defects. Immediate intervention is required to preserve the anophthalmic socket size and prevent scar tissue contractures that may follow surgery. Unfortunately, immediate fitting of an anophthalmic socket w...
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PMID: 18761579
PDF is available here.
PDF is available here.
Journal of Dentistry (36)12 2008
Abstract
In clinical shade matching, color distribution of each material should be considered and color discrepancy with the corresponding key shade guide tab should be also considered....
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PMID: 18930576
PDF is available here.
PDF is available here.
Journal of Dentistry (36)12 2008
Abstract
When the color of tooth-shaped objects is measured with a spectrophotometer or a spectroradiometer, measurement protocols should be specified because color difference by the surface layer removal and the instrument was high....
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PMID: 18930577
PDF is available here.
PDF is available here.
Journal of Dentistry (36)11 2008
Abstract
Silorane gave the best overall performance in stability over time, compared to a set of representative dimethacrylate composites....
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PMID: 18778884
PDF is available here.
PDF is available here.
Abstract
The choice of correct tooth shade for the fabrication of a restoration remains a challenge, even for experienced clinicians. The aim of this research was to evaluate and compare the precision of two different shade determination methods in terms of repeatability. Maxillary right central incisor of 1...
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PMID: 18466278
PDF is available here.
PDF is available here.
Abstract
The aim of this study was to test the color-change effect of all-ceramic restorations compared with porcelain-fused-to-metal (PFM) restorations on marginal peri-implant soft tissue. Thirty patients were randomly divided into 2 groups of 15 subjects each. The all-ceramic group received all-ceramic cr...
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PMID: 18717374
PDF is available here.
PDF is available here.
Abstract
Age and gender were found to be statistically significant determinants in predicting the natural color of central incisors. Although the precision of these predictions was less than the median color difference found for all pairs of teeth studied, and may be considered an acceptable precision, furth...
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PMID: 18672125
PDF is available here.
PDF is available here.
Abstract
The analysis revealed that there were significant changes in L*a*b* color data as the number of firings increased, which resulted in perceptual color changes in L*a*b* color parameters....
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PMID: 18672126
PDF is available here.
PDF is available here.
Abstract
The color distribution of the Vitapan 3D-Master shade guide was more ordered than previously reported color distributions of other, traditional shade guides. However, the interval in the color parameters between adjacent tabs was not uniform; therefore, shade tabs spaced equally, according to the co...
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PMID: 18589070
PDF is available here.
PDF is available here.
Journal of Dentistry (36)7 2008
Abstract
There was a difference between the colour produced for the same veneer properties, between the bleached and non-bleached groups. For a thin (0.5mm) A4 veneer bleaching produced a statistically significant difference in the amount of colour change (DeltaE) compared to veneering alone. For A1, non-ble...
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PMID: 18495320
PDF is available here.
PDF is available here.