Optical Properties and Color Stability of Denture Teeth – A Systematic Review

The objective of this systematic review and meta-analysis was to determine the clinical effectiveness of bulk-fill and conventional resin in composite restorations. A bibliographic search was carried out until May 2020, in the biomedical databases Pubmed/MEDLINE, EMBASE, Scopus, CENTRAL and Web of Science. The study selection criteria were: randomized clinical trials, in English, with no time limit, with a follow-up greater than or equal to 6 months and that reported the clinical effects (absence of fractures, absence of discoloration or marginal staining, adequate adaptation marginal, absence of post-operative sensitivity, absence of secondary caries, adequate color stability and translucency, proper surface texture, proper anatomical form, adequate tooth integrity without wear, adequate restoration integrity, proper occlusion, absence of inflammation and adequate point of contact) of restorations made with conventional and bulk resins. The risk of bias of the study was analyzed using the Cochrane Manual of Systematic Reviews of Interventions. Sixteen articles were eligible and included in the study. The results indicated that there is no difference between restorations with conventional and bulk resins for the type of restoration, type of tooth restored and restoration technique used. However, further properly designed clinical studies are required in order to reach a better conclusion.

Download Full-text

Factors affecting color stability of maxillofacial prosthetic silicone elastomer: A systematic review and meta-analysis

Journal of Elastomers & Plastics ◽

10.1177/0095244320946790 ◽

2020 ◽

pp. 009524432094679 ◽

Cited By ~ 1

Author(s):

Farah Rashid ◽

Aparna Barman ◽

Taseef Hasan Farook ◽

Nafij Bin Jamayet ◽

Mohd Firdaus Bin Yhaya ◽

...

Keyword(s):

Systematic Review ◽

Meta Analysis ◽

Color Stability ◽

Case Control ◽

Nano Particles ◽

Silicone Elastomer ◽

Blue Pigment ◽

Red Pigment ◽

Case Control Studies ◽

Significant Difference

Purpose: This systematic review and meta-analysis explored the factors involved in the color stability and degradation of Maxillo-Facial Prosthetic Silicone Elastomer (MFPSE). Further exploration was done to analyze past literature discussing the potential benefits to color stability when nano-particles were combined with pigmented MFPSE. Method: The search for the articles was done according to PRISMA guidelines. Articles were searched from “Scopus” and “Web of Sciences” from the year 1970 to 2019. Searches were carried out by two reviewers until November 2019. Articles for systematic review were selected based on predefined eligibility criteria. Information regarding weathering conditions, pigments and filler-particle inclusion were extracted as appropriate. Further screening was done for meta-analyze case-control studies of red, blue and yellow pigments according to predefined scoring criteria. Meta-analysis was conducted on case-control studies that incorporated 5%,10% and 15% TiO2 in MFPSE with the said pigments and was carried out using Cochrane Review Manager 5.3. Results: 30 studies were selected for systematic review and 6 studies were eligible for meta-analysis. The most prominent influencers of color stability were nano-fillers and the type of color used in the mixing. Furthermore, experimental conditions, weathering, color of investment plaster and the method of color detection all affected the degree of degradation. There was an overall significant difference found when TiO2 was incorporated with the pigmented silicone. There is significant difference when 10% ( P = 0.0004) TiO2 is incorporated with the red pigment, 5% ( P = 0.03) TiO2 with the yellow and 10% ( P < 0.0001) and 15% ( P = 0.02) TiO2 with the blue pigment. Conclusion: Type of pigment and nano-filler incorporated into the silicone play a role in influencing color stability. Incorporation of 10% TiO2 with red pigment,5% with yellow pigment and 10% or 15% TiO2 with blue pigment provided some protection to the silicone elastomer from color degradation.

Download Full-text

Color Stability and Translucency of Polymer-Infiltrated Ceramic-Network Materials—A Systematic Review of the Literature

Journal of Biomaterials and Tissue Engineering ◽

10.1166/jbt.2021.2746 ◽

2021 ◽

Vol 11 (10) ◽

pp. 1865-1872

Author(s):

Nawaf Labban

Keyword(s):

Systematic Review ◽

English Language ◽

Web Of Science ◽

Color Stability ◽

Resin Composites ◽

Stability Assessment ◽

Laboratory Studies ◽

Review Of The Literature ◽

Restorative Materials

This systematic review aimed to compile information and report the color stability and translucency of polymer-infiltrated ceramic-network (PICN) materials for suitable clinical applications in dentistry. Original peer-reviewed articles in electronic databases including PubMed, MEDLINE, Scopus, and Web of Science were searched to identify relevant papers published between January 2013 and August 2020. The published papers were only in the English language and limited to in vitro studies, and experimental reports were considered. The data from nine studies were considered when reviewing the color stability and translucency of PICN in comparison to other commonly used restorative materials. Among the included studies, color stability assessment was performed in five studies, and the other four studies were involved in the combined assessment of both color stability and translucency. PICN materials are a comparatively newer class of restorative materials and are recommended to overcome the drawbacks of ceramics and resin composites. The outcomes of previous laboratory studies still do not provide convincing results regarding the optical properties of PICN materials. However, with existing sources and evidence, PICN materials exhibit less color stability than ceramics do but better color stability compared to that of resin nanoceramics (RNC) and resin composites. The translucency of PICN materials is low compared to that of ceramics, nanoceramics, and resin composites.

Download Full-text

Mechanical and Optical Properties of the Experimental and Commercial Dental Composites: A Systematic Review

Advanced Engineering Forum ◽

10.4028/www.scientific.net/aef.41.11 ◽

2021 ◽

Vol 41 ◽

pp. 11-25

Author(s):

Elin Karlina ◽

Camellia Panatarani ◽

Nina Djustiana ◽

I Made Joni

Keyword(s):

Systematic Review ◽

Optical Properties ◽

Dental Care ◽

Minimal Invasive ◽

Dental Composite ◽

Dental Composites ◽

Dental Restorations ◽

Fabrication Procedure

Highly demand of aesthetic needed made dental composites become a major role as dental restorations. Minimal invasive of sound tissue and the ability to mimic the original teeth also have the recommendation to choose dental composites. The developments of dental composites mostly focus on filler systems to improve mainly in the mechanical and optical properties due to the esthetic aspect of dental care recently has become increasing importance. According to the component of dental composites, the fillers had a big role to determine the properties of dental composite. Many kinds of fillers have been utilized to improve the properties. Two kinds of dental composites had been known based on their fabrication procedure; i.e. experimental and commercial. The experimental dental composites had been produced by the researcher on their formula to obtain good properties while commercial dental composites were made by many manufacturers which have each brand that has each product of excellence, especially in mechanical and optical properties. The aim of this review focused on the mechanical and optical properties of experimental dental composites and commercial dental composites including describes many factors that affect those properties.

Download Full-text

Extremely stable-color flexible white organic light-emitting diodes with efficiency exceeding 100 lm W−1

Journal of Materials Chemistry C ◽

10.1039/c4tc01582g ◽

2014 ◽

Vol 2 (46) ◽

pp. 9836-9841 ◽

Cited By ~ 40

Author(s):

Baiquan Liu ◽

Lei Wang ◽

Miao Xu ◽

Hong Tao ◽

Dongyu Gao ◽

...

Keyword(s):

Optical Properties ◽

High Efficiency ◽

Light Emitting Diodes ◽

Color Stability ◽

Organic Light Emitting Diodes ◽

Electrical And Optical Properties ◽

Light Emitting ◽

Organic Light

Flexible WOLEDs with extremely high efficiency and color-stability are realizedviathe extraordinary combination of mechanical, electrical and optical properties.

Download Full-text