Background: Demineralization of the enamel surface, which appears as white spot lesions during and after removal of the fixed orthodontic appliance, is the most common disadvantage of the orthodontic treatment course. Using the remineralizing agents during and after orthodontic treatment helps to avoid those enamel defects.
Objective: The present study aims to assess the remineralizing effect of the chicken eggshell powder on the demineralized enamel surfaces after debonding the orthodontic bracket system.
Materials And Methods: The current study was performed on 80 prepared premolar crowns embedded into acrylic molds. The samples were prepared to receive routine steps of the bonding process for the bracket system. The paste of the chicken eggshell powder was added to the samples after the debonding process. Scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) were used to evaluate the remineralization effect of the chicken eggshell powder. Also, the Vickers microhardness tester was used to assess the enamel surface microhardness.
Results: It was found that the mean value of the Ca/P ratio for the samples before bonding of the orthodontic bracket system was (4.17 ± 2.2). This value significantly decreased to (2 ± 1.3) after debonding of the orthodontic bracket system and then showed a significant increase to (4.79 ± 2.65) after remineralization. These results were assured by the values of the Vickers microhardness tester.
Conclusion: The chicken eggshell powder has an excellent remineralization effect for the demineralized enamel surface after debonding the orthodontic enamel surface.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10953725 | PMC |
http://dx.doi.org/10.4103/jos.jos_194_23 | DOI Listing |
Poult Sci
January 2025
Shandong Provincial Key laboratory for Livestock Germplasm Innovation & Utilization, College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Taian City, Shandong Province 271018, PR China. Electronic address:
Eggshells not only protect the contents of the egg from external damage but are also a key factor influencing consumer choice, second only to price. In the later stages of egg production, the incidence of pimpled eggs significantly increases, severely affecting the hatchability and food safety of the eggs. This study compares the differences in the uterine proteomes and metabolomes of hens producing pimpled eggs and those producing normal eggs, aiming to identify the proteins and metabolites that may play a crucial role in the formation of pimpled eggs.
View Article and Find Full Text PDFVet Med Sci
January 2025
Department of Animal Nutrition and Nutritional Disease, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Burdur, Turkey.
Photodynamic inactivation (PDI) is a new and promising strategy for eliminating foodborne pathogenic bacteria in food preservation, reducing associated health risks for consumers. This study aimed to develop an innovative PDI-based system to inactivate Salmonella Enteritidis PT4 on eggshells. The system includes 405 nm light-emitting diodes (LEDs) and the application of curcumin or carvacrol as photosensitizers.
View Article and Find Full Text PDFComp Biochem Physiol A Mol Integr Physiol
January 2025
Developmental Integrative Biology, Department of Biological Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, United States of America.
Bird nests of coastal or inland breeding birds can temporarily flood during high tides or storms. However, respiratory physiological disruption of such water submersion and implications for post-submergence survival are poorly understood. We hypothesized that respiratory physiological disturbances caused by submersion would be rapidly corrected following return to normal gas exchange across the eggshell, thus explaining survival of nest inundation in the field.
View Article and Find Full Text PDFTrop Anim Health Prod
January 2025
Federal Institute of Education, Science, and Technology of Amazonas, Downtown Campus, Manaus, Amazonas, Brazil.
This study evaluated the effects of incorporating biological silage from tambaqui (Colossoma macropomum) by-products (BST) on the performance, hematological and plasma biochemical parameters, and egg quality (physical, proximate composition and sensory characteristics) of older commercial hens. The BST was prepared by ensiling tambaqui by-products with lactic acid bacteria, cassava trimmings, and preservatives, producing a nutrient-rich, high-protein feed ingredient. One hundred and twenty Hisex Brown hens (83 weeks old) were divided into five treatment groups, each receiving diets with 0, 1, 2, 3, or 4% BST.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Shandong Provincial Key Laboratory for Livestock Germplasm Innovation & Utilization, College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Taian 271018, China.
Pimpled eggs have defective shells, which severely impacts hatching rates and transportation safety. In this study, we constructed single-cell resolution transcriptomic and chromatin accessibility maps from uterine tissues of chickens using single-cell RNA sequencing (scRNA-seq) and single-cell ATAC sequencing (scATAC-seq). We identified 11 major cell types and characterized their marker genes, along with specific transcription factors (TFs) that determine cell fate.
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