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Combining different metal artifact reduction levels with sharpening filters and slice thickness for the visualization of mandibular canals perforated by implants.
Clin Oral Investig
November 2024
Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Av. Limeira, 901, Areião , Piracicaba, SP, 13414-903, Brazil.
Objectives: To investigate the influence of combining levels of metal artifact reduction (MAR) tool with different filters and slice-thickness in the detection of mandibular canals perforated by implants on CBCT scans and to objectively assess the impact of the aforementioned combinations.
Materials And Methods: Implants were placed above (8 implants) and inside (10 implants) mandibular canals of dried-mandibles. CBCT scans were obtained with the Eagle 3D unit (85 kVp, 8 mA, 5 × 5 cm FOV, 130 μm voxel size, and off/medium/high MAR levels).
Hand-Jaw Coordination as Mice Handle Food Is Organized around Intrinsic Structure-Function Relationships.
J Neurosci
October 2024
Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, 60611.
Rodent jaws evolved structurally to support dual functionality, for either biting or chewing food. Rodent hands also function dually during food handling, for actively manipulating or statically holding food. How are these oral and manual functions coordinated? We combined electrophysiological recording of muscle activity and kilohertz kinematic tracking to analyze masseter and hand actions as mice of both sexes handled food.
View Article and Find Full Text PDFUsing your jaws sharpens your teeth… and mind!
J Oral Rehabil
November 2024
Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
Mandible mechanical properties and composition of the larval Glossosoma boltoni (Trichoptera, Insecta).
Sci Rep
February 2024
Department of Functional Morphology and Biomechanics, Zoological Institute, Christian-Albrechts-Universität zu Kiel, Am Botanischen Garten 1-9, 24118, Kiel, Germany.
Article Synopsis
- Insect mandibles adapt in structure and material properties to handle tough food sources like algae, which can cause wear and damage.
- A study on the larvae of the insect Glossosoma boltoni revealed that the medial tip of its mandibles is softer and more flexible, suggesting a self-sharpening mechanism that helps maintain sharp edges during feeding.
- The research also examined the cuticle's chemical composition using various microscopy techniques, finding certain transition metals but no strong correlation with the mechanical properties observed in the mandibles.
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