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Osteoid osteoma and osteoblastoma of the cervical spine in the pediatric population: analysis of the literature and experience with four operated cases.
Childs Nerv Syst
December 2024
Departement of Pediatric Neurosurgery, Hôpital Femme Mère Enfant, Lyon, France.
Background And Aim: Osteoid osteoma (Oo) and osteoblastoma (Ob) are rare primary bone tumors with a higher prevalence in the second decade of life. Treatment can be conservative, but in cases of spinal location, resective surgery is of great importance but may be challenging.
Material And Methods: We report four pediatric cases of Oo and Ob managed in our unit, with different locations at the level of the cervical spine.
An Octopus-Inspired Soft Pneumatic Robotic Arm.
Biomimetics (Basel)
December 2024
Department of Electrical and Computer Engineering, Hellenic Mediterranean University, GR-71410 Heraklion, Greece.
This paper addresses the design, development, control, and experimental evaluation of a soft robot arm whose actuation is inspired by the muscular structure of the octopus arm, one of the most agile biological manipulators. The robot arm is made of soft silicone and thus possesses enhanced compliance, which is beneficial in a variety of applications where the arm may come into contact with delicate features of its environment. The arm is composed of three elongated segments arranged in series, each one of which contains several pneumatically actuated chambers embedded in its silicone body, which may induce various types of deformations of the segment.
View Article and Find Full Text PDFComparing Polymerization Shrinkage Measurement Methods for Universal Shade Flowable Resin-Based Composites.
Biomimetics (Basel)
December 2024
Department of Operative Dentistry, Aichi Gakuin School of Dentistry, Nagoya 464-8651, Japan.
Universal shade flowable composites have been introduced to mimic tooth structure with reduced color mismatch and reduced chair time and cost. However, the polymerization shrinkage of resin material may lead to sensitivity and restoration failure. The purpose of this study was to compare the polymerization shrinkage of recently introduced universal shade flowable resin-based composites using both wet and dry density methods.
View Article and Find Full Text PDFPosteruptive Loss of Proteins in Porcine Enamel.
J Dent Res
December 2024
The ADA Forsyth Institute Inc., Cambridge, MA, USA.
Tooth enamel maturation requires the removal of proteins from the mineralizing enamel matrix to allow for crystallite growth until full hardness is reached to meet the mechanical needs of mastication. While this process takes up to several years in humans before the tooth erupts, it is greatly accelerated in the faster-developing pigs. Pig teeth erupt with softer, protein-rich enamel that is similar to hypomineralized human enamel but continues to harden quickly after eruption.
View Article and Find Full Text PDFTeratological abnormalities in hard ticks (Acari: Ixodidae) from Pakistan.
Exp Appl Acarol
December 2024
Department of Zoology, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan.
Studying teratological abnormalities in ticks are taxonomically important because this poorly understood biological phenomenon causes difficulties in tick's identification. Globally, reports regarding these abnormalities in ticks, reasons of their causes and their impacts are scarce. According to the available published data, there are no studies regarding teratological abnormalities in ticks from Pakistan.
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