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Fracture strength and marginal and internal adaptation of lithium disilicate and hybrid ceramic endocrowns and non-retentive overlays for endodontically treated molar teeth.
BMC Oral Health
December 2024
Dental Sciences Research Center, Department of Prosthodontics, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
Background: With the advances in the adhesive science, several conservative treatment options such as non-retentive overlays have been suggested for endodontically treated posterior teeth. However, information is scarce regarding the fracture strength and adaptation of non-retentive overlays compared with endocrowns, and the effect of material type in this respect. Thus, this study aimed to assess the fracture strength and internal and marginal adaptation of lithium disilicate (LDS) and hybrid ceramic endocrowns and non-retentive overlays for endodontically treated molar teeth.
View Article and Find Full Text PDFOverview of chitin dissolution, hydrogel formation and its biomedical applications.
J Biomater Sci Polym Ed
December 2024
Polymeric Biomaterials Lab, School of Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi, India.
Chitin hydrogel and hydrogel-based products are some of the frequently reported biomaterials for biomedical applications. Yet there is a void in understanding chitin's dissolution mechanism and its most suitable solvent system(s). Chitin is a natural polysaccharide polymer which can be dissolved in solvents such as calcium chloride- methanol, sodium hydroxide/urea (NaOH/urea), lithium chloride diacetamide (LiCl/DMAc), ionic liquids and deep eutectic solvents.
View Article and Find Full Text PDFPurpose: The study aims to produce CAD-CAM reference samples for shade communication milled from the material of the restoration zirconia (ZrO2) and zirconia-reinforced lithium silicate (ZLS) and evaluate the color difference with the corresponding conventional Vita Classical (VC) shade tab. Furthermore, it aims to verify the color consistency of the materials.
Materials And Methods: Five-five samples were milled out of ZrO2 and ZLS in five different colors and their color parameters were compared with the corresponding VC tabs both visually and digitally.
PLASMA TRACE ELEMENTS IN MANAGED HUMBOLDT PENGUINS () FROM A SINGLE ZOOLOGICAL COLLECTION IN GERMANY.
J Zoo Wildl Med
December 2024
Laboklin GmbH & Co KG, 97688 Bad Kissingen, Germany.
Only limited data on concentrations of trace elements in the blood of avian species have been published. This information can play an important role in the conservation of endangered species and their protection from environmental pollutants and can also be clinically relevant in managed individuals. Some elements are essential for the health of the animals in human care, but little is known about expected concentrations for some of these elements.
View Article and Find Full Text PDFLithium Use During Pregnancy in 14 Countries.
JAMA Netw Open
December 2024
Centre for Pharmacoepidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden.
Importance: In pregnancy, the benefits of lithium treatment for relapse prevention in psychiatric conditions must be weighed against potential teratogenic effects. Currently, there is a paucity of information on how and when lithium is used by pregnant women.
Objective: To examine lithium use in the perinatal period.
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