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1,210 results for “teeth”
A fifteen-tile tomographic micro-CT dataset of a panel painting "Cadmus sowing dragon's teeth" 3/3
<p><strong>Summary</strong><br> This submission contains a fifteen-tile tomographic dataset of a panel painting and 15 postprocessed images used for dendrochronological measurements (see related datasets).The data is made available as part of [Domínguez-Delmás et al., 2021].</p> <p><strong>Apparatus</strong><br> The dataset is acquired using the custom-built and highly flexible CT scanner, FleX-ray Laboratory, developed by TESCAN-XRE, located at CWI in Amsterdam. This apparatus consists of a cone-beam microfocus X-ray point source that projects polychromatic X-rays onto a 1944-by-1536 pixels, 14-bit, flat detector panel. Full details can be found in [Coban 2020].<br> <br> <strong>Sample Information</strong><br> The sample is panel painting Cadmus Sowing dragon's teeth. H 26.2cm x w 42.3cm [Rijksmuseum inventory number SK-A-4051, https://www.rijksmuseum.nl/en/collection/SK-A-4051]. It was mounted on a foam base on the rotation stage, see [Domínguez-Delmás et al., 2021] for images.</p> <p><br> <strong>Experimental Plan</strong><br> The data in this submission was collected to facilitate measurements of the tree rings (dendrochronological research) in a cross-section. The panel was mounted in such a way that the desired cross section would be obtained in the vertical direction. A section of a few cm wide along the entire height was imaged slightly off centre of the painting, to avoid metal nails that had showed up in several projections. In total 15 tiled CT scans were collected, moving source and detector vertically by the same distance. Each tile consisted of 1600 projections, each an average of 2 projections with 300ms acquisition time. We used tube settings 70 kV, 70 mA and a 0.1 cm thickness copper filter. Dark-field (closed-shutter), and 2 flat-field (open-shutter) images were taken for each tile after the acquisition with 100 averaged images of 300 ms acquisition time. Reconstructed image resolution was 37 µm.<br> All raw data (i.e. no corrections) is made available in .tif format. Postprocessing steps are described in the supplementary material of [Domínguez-Delmás et al., 2021].<br> <br> <strong>List of Contents</strong><br> The content of the submission is divided in three datasets, with in total 16 subfolders: Images, containing the 15 postprocessed images used for dendrochronological measurements and Tile1-Tile15, each containing the data from one of the tiled scans.<br> Each data folder contains:</p> <ul> <li>dark-field (or closed-shutter) image, di000000.tif,</li> <li>flat-field (or open-shutter) image after acquisition, io000000.tif,</li> <li>raw (unprocessed or uncorrected) projections, scan_*.tif,</li> <li>data settings XRE.txt, a text file with scanner metadata,</li> <li>metadata.toml, a text file with a summary of the scanner metadata</li> </ul> <p><strong>Additional Links</strong><br> These datasets are produced by the Computational Imaging group at Centrum Wiskunde & Informatica (CI-CWI). For any relevant Python/MATLAB scripts for the FleX-ray datasets, we refer the reader to our group's GitHub page.</p> <p><strong>Contact Details</strong><br> For more information or guidance in using these datasets, please get in touch with</p> <ul> <li>bossema [at] cwi.nl</li> </ul> <p> <br> <strong>Acknowledgments</strong><br> We thank Petria Noble for providing us with the opportunity to scan this interesting object. We thank Erma Hermens , Moorea Hall-Aquitania and Marta Domínguez Delmás for bringing the object and research questions to our attention and inviting our collaboration on this research project.<br> The authors would like to acknowledge the funding from the Netherlands Organisation for Scientific Research (NWO), project numbers 341-60-001, 639.073.506 and 628.007.033 and Netherlands Institute for Conservation, Art and Science (NICAS).</p>
DMTA dataset. Detailed list of individual teeth from Cova de la Guineu
<p>Detailed list of individual teeth (N = 69) examined in this study. All teeth are lower left second molars (LLM2). DMTA analysis were performed on buccal (B), occlusal (O) or both (BO) enamel surfaces. Poor quality scans with obscured microwear features that were removed from study are indicated by dashes (-).</p>
Microhardness of control group teeth after Radiation Therapy
<p>The table shows microhardness values of 11 samples of control group after Radiation Therapy. Each microhardness value was determined by assessing 5 different sites on the enamel surface and the final SMH was noted.The microhardness values for the control group ranged from 70.68 - 93.44 HV.</p>
Comparison of Root End Sealing Ability of three Retrograde Filling Materials in Teeth with Root Apices Resected at 900 using dye penetration method under fluorescent microscope.
<p>Checking the depth of dye penetration and thereby evaluating the sealing ability of retrograde materials</p>
Raw data for: Over-eruption in marsupial carnivore teeth: compensation for a constraint
<p><span>Pronounced over-eruption of the canine teeth, much greater than in eco-morphologically equivalent placental carnivores, occurs with age and growth in Australian marsupial carnivores. Suppression of functional tooth replacement is a characteristic of marsupials and is frequent among diverse placentals, where the primitive therian pattern is two generations of incisor, canine and premolar teeth. Rapid determinate growth is one among multiple hypotheses proposed to explain the loss of tooth replacement in mammals. In this line of reasoning, the animal reaches a sufficient body or jaw size to accommodate adult-sized teeth by the time it requires functional dentition. Marsupial carnivores have a full set of adult anterior teeth at weaning, which erupt into a juvenile jaw that is 25 to 30 % adult size, compared with well grown in placental carnivores. Indeterminate over-eruption of the canine teeth in marsupial carnivores results in increasing canine height and diameter with increasing body size with age, suggesting this is a compensatory mechanism for the constraint of a single generation of anterior teeth. Patterns of over-eruption in different tooth types of marsupial carnivores are consistent with two non-exclusive mechanisms that operate in other mammals, a response to tooth wear and lack of an occlusal partner.</span></p>
The Effect of Bristle Brush, Rubber Cup, and Air Polishing on Tooth Surface Roughness of Scaled Teeth
ClinicalTrials.gov study NCT06857474. IPD Sharing: YES. Countries: 1. Publications: 5.
Timing of Dietary Acid Intake, Brushing Teeth and Acid Erosion.
ClinicalTrials.gov study NCT02449434. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Study on ASTRA TECH Implant System, OsseoSpeed™ Implants in Patients Missing All Teeth in the Upper Jaw, Restored With Provisional Teeth Within 24 Hours
ClinicalTrials.gov study NCT00711022. IPD Sharing: Not stated. Countries: 2. Publications: 4.
Effect of Different Chelation Protocols on the Healing of Periapical Lesions in Teeth With Chronic Apical Periodontitis
ClinicalTrials.gov study NCT07353008. IPD Sharing: NO. Countries: 1. Publications: 5.
Sonendo GentleWave™ System for Treatment in Molar Teeth Requiring Root Canal Therapy
ClinicalTrials.gov study NCT02285595. IPD Sharing: NO. Countries: 1. Publications: 61.
Providers Against Cavities in Children's Teeth
ClinicalTrials.gov study NCT03385629. IPD Sharing: NO. Countries: 1. Publications: 2.
Outcomes of Pulpotomy and Root Canal Treatment in Teeth With Symptomatic Irreversible Pulpitis
ClinicalTrials.gov study NCT07375576. IPD Sharing: NO. Countries: 1. Publications: 0.
Effect of CPP-ACP Paste on Dental Caries in Primary Teeth
ClinicalTrials.gov study NCT01604109. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Calcium Hydroxide, Mineral Trioxide Aggregate and Biodentine (Trademark) as Direct Pulp Capping of Permanent Teeth
ClinicalTrials.gov study NCT02492841. IPD Sharing: NO. Countries: 1. Publications: 3.
Clinical Study on a New Flowable Composite as a Restorative in Adult Teeth
ClinicalTrials.gov study NCT01369108. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Comparison of Intranasal Kovacaine Mist, Tetracaine Alone, and Placebo for Anesthetizing Maxillary Teeth in Adults
ClinicalTrials.gov study NCT01710787. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
Study on OsseoSpeed™ Implants in Patients Missing 2-5 Teeth in the Posterior Lower Jaw, Restored With Permanent Teeth Attached 6-7 Weeks Later
ClinicalTrials.gov study NCT00711425. IPD Sharing: Not stated. Countries: 2. Publications: 1.
Effect of Laser Use on Guided Tissue Regeneration in Treatment of Molar Teeth With Class 2 Furcation Affected by Periodontitis
ClinicalTrials.gov study NCT01522131. IPD Sharing: Not stated. Countries: 1. Publications: 8.
Effect of Phosphoric Acid Etching Duration on Direct Resin-Based Composite Restorations in Permanent Anterior Teeth
ClinicalTrials.gov study NCT06991842. IPD Sharing: UNDECIDED. Countries: 1. Publications: 4.
Outcomes of Full Pulpotomy Treatment in Teeth With Symptoms of Irreversible Pulpitis
ClinicalTrials.gov study NCT06802536. IPD Sharing: YES. Countries: 1. Publications: 3.
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