Fluorescence Intensity of Resin Composites and Dental Tissues Before and After Accelerated Aging: A Comparative Study

10.2341/07-74 ◽  
2008 ◽  
Vol 33 (2) ◽  
pp. 189-195 ◽  
Author(s):  
M. K. Takahashi ◽  
S. Vieira ◽  
R. N. Rached ◽  
J. B. Almeida ◽  
M. Aguiar ◽  
...  
Keyword(s):  
Optical Properties ◽  
Comparative Study ◽  
Fluorescence Intensity ◽  
Clinical Relevance ◽  
Accelerated Aging ◽  
Resin Composites ◽  
Dental Tissues ◽  
Human Enamel ◽  
Restorative Materials ◽  
Before And After

Clinical Relevance Fluorescence is one of the optical properties of resin composites and dental tissues that is of great interest today. The fluorescence intensity of restorative materials should be as close as possible to that of human enamel and dentin to ensure an acceptable reproduction of these qualities in esthetic restorations.

Impact of laboratory treatment with coloring and fluorescent liquids on the optical properties of zirconia before and after accelerated aging

2018 ◽  
Vol 120 (2) ◽  
pp. 276-281 ◽  
Author(s):  
Caroline Freitas Rafael ◽  
Paulo Francisco Cesar ◽  
Marcio Fredel ◽  
Ricardo de Souza Magini ◽  
Anja Liebermann ◽  
...  
Keyword(s):  
Optical Properties ◽  
Accelerated Aging ◽  
Before And After

Comparative study by GC×GC-TOFMS on the composition of crude and composite-additives bio-oil before and after accelerated aging treatment

2020 ◽  
Vol 93 (6) ◽  
pp. 2163-2175
Author(s):  
Yichen Wang ◽  
Renzhan Yin ◽  
Meiyun Chai ◽  
Nishu ◽  
Chong Li ◽  
...  
Keyword(s):  
Comparative Study ◽  
Accelerated Aging ◽  
Aging Treatment ◽  
Bio Oil ◽  
Before And After

scholarly journals Comparative study of the surface roughness of Ormocer-based and conventional composites

2003 ◽  
Vol 11 (4) ◽  
pp. 348-353 ◽  
Author(s):  
Leonardo Gonçalves Cunha ◽  
Roberta Caroline Bruschi Alonso ◽  
Paulo Henrique dos Santos ◽  
Mário Alexandre Coelho Sinhoreti
Keyword(s):  
Surface Roughness ◽  
Comparative Study ◽  
Statistical Difference ◽  
The Other ◽  
Initial Surface ◽  
Resin Composites ◽  
Metallic Mold ◽  
Tukey Test ◽  
Final Surface ◽  
Before And After

The aim of this study was to evaluate the surface roughness of two Ormocer-based resin composites before and after mechanical toothbrushing. The study compared the brands Admira and Definite with composites based on conventional monomer systems (Bis-GMA, Bis-EMA, UEDMA e TEGDMA), Z250 and A110. Eight samples of each material with 4mm in diameter and 2mm in height were prepared using a metallic mold. After 24 hours they were polished and examined with a profilometer for measurement of the initial surface roughness (Ra, mm) before mechanical toothbrushing (30,000 cycles). After toothbrushing, the samples were taken to the profilometer once again to check the final surface roughness. The results were submitted to ANOVA and Tukey test (5%). The Admira composite presented a higher mean of surface roughness before toothbrushing (0.132mm), with a statistical difference from the composite A110 (0.082mm). Definite (0.110mm) and Z250 (0.105mm) composites showed no differences between themselves or among the other composites. No statistical differences were observed after toothbrushing between the composites Definite (0.178mm), Z250 (0.187mm), Admira (0.181mm), and A110 (0.193mm). All composites showed a statistically significant increase in the surface roughness after toothbrushing.

Detection of Tooth‐Colored Restorative Materials for Forensic Purposes Based on Their Optical Properties: An In Vitro Comparative Study

2018 ◽  
Vol 64 (1) ◽  
pp. 254-259 ◽  
Author(s):  
Ramya Kiran ◽  
James Chapman ◽  
Marc Tennant ◽  
Alexander Forrest ◽  
Laurence J. Walsh
Keyword(s):  
Optical Properties ◽  
Comparative Study ◽  
Restorative Materials

scholarly journals Effects of Fibers on Color and Translucency Changes of Bulk-Fill and Anterior Composites after Accelerated Aging

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Ali Riza Tuncdemir ◽  
Mehmet Esad Güven
Keyword(s):  
Accelerated Aging ◽  
Resin Composites ◽  
Control Groups ◽  
Significance Level ◽  
Polyethylene Fiber ◽  
Before And After ◽  
Post Hoc ◽  
And Control ◽  
Composite Samples ◽  
Polyethylene Fibers

The aim of this study was to determine the effects of glass and polyethylene fibers on the color and translucency change of bulk-fill and anterior composites before and after artificial accelerated aging (AAA). Two types of teflon molds were used to fabricate samples which were 13 mm in diameter and, respectively, 2 mm and 4 mm in height. Polyethylene fiber (PF) and glass fiber (GF) were incorporated in the middle of the composite samples. Color and translucency changes of each composite were evaluated before and after AAA with spectrophotometer. ANOVA and Tukey’s HSD post hoc statistical analysis were used at a significance level of 0.05. Before AAA (for anterior composites), there were no significant differences in L* and b* parameters among the three groups (p>0.05); there were no significant differences in L* parameter between PF and GF groups or in TP between GF and control groups (p>0.05) (for bulk-fill composites). After AAA, there were no significant differences in L* parameter between GF and control groups, in a* parameter between PF and control groups, in b* parameter among all groups, or in TP parameter between GF and control groups (p>0.05). Fiber reinforcement led to color and TP change in both anterior and bulk-fill resin composites.

Color Stability and Degree of Cure of Direct Composite Restoratives After Accelerated Aging

2007 ◽  
Vol 32 (4) ◽  
pp. 406-411 ◽  
Author(s):  
A. Sarafianou ◽  
S. Iosifidou ◽  
T. Papadopoulos ◽  
G. Eliades
Keyword(s):  
Clinical Relevance ◽  
Accelerated Aging ◽  
Color Stability ◽  
Degree Of Cure ◽  
Color Changes ◽  
Direct Light ◽  
Restorative Materials

Clinical Relevance Accelerated hydrothermal- and photo-aging of direct light-cured composite restorative materials induced visually perceptible but clinically acceptable total color changes, along with a reduction in the amount of remaining C=C bonds.

scholarly journals The translucency of human teeth and its relation to esthetic restorative materials

2021 ◽  
Vol 8 (11) ◽  
pp. 5603
Author(s):  
Thuraya Abdulrahim Basudan ◽  
Saif Juraythi Alqahtani ◽  
Omar Abdulaziz Alsalmh ◽  
Ekhlas Ishaq Kensara ◽  
Mohammed Fareed Al Mughafi ◽  
...  
Keyword(s):  
Mean Value ◽  
Dental Restoration ◽  
Resin Composites ◽  
Human Teeth ◽  
Lighting Conditions ◽  
Naturally Occurring ◽  
Human Enamel ◽  
Different Types ◽  
Restorative Materials ◽  
Main Factor

The main factor that can determine the harmonization and depth of color restorations for the adjacent other restorations or other teeth is the translucency of these restorations. Many factors can affect the translucency and color of the restoration material, including translucency parameter, lighting conditions, opacity, gloss, light scattering, and overall perception by the naked eye. Previous investigations have indicated that translucency is the main factor that can significantly contribute to the esthetic characteristics of the different dental restoration materials. In the present literature review, we have discussed the translucency of human teeth and its relation to esthetic restorative materials. Comparing the translucency of the different restoration materials with the naturally occurring human enamel is essential for adequate validation of their clinical application. It has been demonstrated that for 1 mm thick human enamel, a mean value for the translucency parameter of 15-19 should be considered. We have also highlighted the differences between the different types of resin composites and different shade groups, and findings indicate the superiority of some types and shade groups over others, as previously discussed. However, it should be noted that further research is still needed to unify the variously estimated values for the translucency parameter among the different restoration materials. This can help clinicians adequately interpret these data and obtain satisfactory clinical and patient-related outcomes.

scholarly journals Color Selection and Reproduction in Dentistry Part 2: Light Dynamics in Natural Teeth

2016 ◽  
Vol 18 (2) ◽  
pp. 23
Author(s):  
Max Schmeling DDS, MS, PhD
Keyword(s):  
Optical Properties ◽  
Light Source ◽  
Color Selection ◽  
Dental Tissues ◽  
Restorative Materials ◽  
Natural Teeth

In the first article of this trilogy, it was demonstrated the great importance of the light source in the chromatic procedures and also the chromatic characteristics of color communication proposed by Munsell.  In this second article, the focus is in Geometric Attributes and Optical Properties of natural teeth. The main features of translucency, opalescence and fluorescence will be described. According to the interaction of light with natural dental tissues, the desired optical qualities of the esthetic restorative materials will be associated.

scholarly journals Effects of artificial accelerated aging on the optical properties of resin composites

2018 ◽  
pp. 1105-1113
Author(s):  
Debora Cristina Barbosa Dantas ◽  
Ingrid Fernandes Mathias ◽  
Alessandra Bühler Borges ◽  
Carlos Rocha Gomes Torres ◽  
Taciana Marco Ferraz Caneppele
Keyword(s):  
Optical Properties ◽  
Accelerated Aging ◽  
Resin Composites

scholarly journals Color Selection and Reproduction in Dentistry Part 2: Light Dynamics in Natural Teeth

2016 ◽  
Vol 18 (2) ◽  
pp. 23
Author(s):  
Max Schmeling DDS, MS, PhD
Keyword(s):  
Optical Properties ◽  
Light Source ◽  
Color Selection ◽  
Dental Tissues ◽  
Restorative Materials ◽  
Natural Teeth

In the first article of this trilogy, it was demonstrated the great importance of the light source in the chromatic procedures and also the chromatic characteristics of color communication proposed by Munsell.  In this second article, the focus is in Geometric Attributes and Optical Properties of natural teeth. The main features of translucency, opalescence and fluorescence will be described. According to the interaction of light with natural dental tissues, the desired optical qualities of the esthetic restorative materials will be associated.

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