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Management of an Acquired Palatal Defect With a 3-Dimensional Printed Palatal Obturator in a Dog.
J Vet Dent
December 2024
Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Denmark.
Large defects in the hard palate can be difficult to treat surgically, as dehiscence is common. These defects may instead be managed with a palatal obturator, which can serve to separate the oral and nasal cavities. In this report, a 7-year-old, mixed breed dog was treated with a palatal obturator, after presenting with an acquired palatal defect following treatment of a giant cell tumor of bone in the hard palate.
View Article and Find Full Text PDFFrom Images to Loci: Applying 3D Deep Learning to Enable Multivariate and Multitemporal Digital Phenotyping and Mapping the Genetics Underlying Nitrogen Use Efficiency in Wheat.
Plant Phenomics
December 2024
Plant Phenomics Research Centre, Academy for Advanced Interdisciplinary Studies, Collaborative Innovation Centre for Modern Crop Production, Co-sponsored by Province and Ministry, College of Agriculture, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing 210095, China.
The selection and promotion of high-yielding and nitrogen-efficient wheat varieties can reduce nitrogen fertilizer application while ensuring wheat yield and quality and contribute to the sustainable development of agriculture; thus, the mining and localization of nitrogen use efficiency (NUE) genes is particularly important, but the localization of NUE genes requires a large amount of phenotypic data support. In view of this, we propose the use of low-altitude aerial photography to acquire field images at a large scale, generate 3-dimensional (3D) point clouds and multispectral images of wheat plots, propose a wheat 3D plot segmentation dataset, quantify the plot canopy height via combination with PointNet++, and generate 4 nitrogen utilization-related vegetation indices via index calculations. Six height-related and 24 vegetation-index-related dynamic digital phenotypes were extracted from the digital phenotypes collected at different time points and fitted to generate dynamic curves.
View Article and Find Full Text PDFTrueness of maxillary complete dentures duplicated by using conventional and 3D printing techniques: A comparative in vitro study.
J Prosthet Dent
December 2024
Lecturer, Department of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
Statement Of Problem: Duplicating complete dentures and achieving accurately fitting prostheses poses a challenge. Conventional methods are often time-consuming and susceptible to human error. Advancements in digital technology for denture fabrication offer a promising alternative to conventional duplication techniques, but studies comparing the methods are lacking.
View Article and Find Full Text PDFAdvancing 3D dental scanning: The use of photogrammetry with light detection and ranging for edentulous arches.
J Prosthet Dent
December 2024
Professor and Chair, Department of Restorative Dentistry, Rutgers School of Dental Medicine, Rutgers Biomedical and Health Sciences, Rutgers University, Newark, NJ.
Statement Of Problem: The advent of computer-aided design and computer-aided manufacturing (CAD-CAM) has necessitated the acquisition of digital scans. However, there are limitations and problems with acquiring accurate 3-dimensional (3D) casts from edentulous patients, especially in the presence of saliva.
Purpose: The purpose of this in vitro study was to develop a novel approach for obtaining 3D casts of edentulous arches by using 2-dimensional (2D) images as an alternative to traditional 3D scanners with and without light detection and ranging (LiDAR).
3-Dimensional quantitative analysis of mandibular motion in TMD and healthy subjects: Comparison with clinical observations.
J Dent
December 2024
Department of Orthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Gulou District, Nanjing, China; Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering research of stomatological Translational Medicine, Nanjing Medical University, Gulou District, Nanjing, China. Electronic address:
Objectives: To establish a quantitative method for objectively assessing 3-dimensional (3D) mandibular trajectories and comparing clinical evaluations with computational analyses.
Methods: In total, 184 volunteers were recruited and grouped into control (n = 121) and temporomandibular disorder (TMD) groups (n = 63) according to the dual-axis DC/TMD checklist. 3D trajectories were generated by integrating mandibular motion and cone beam computed tomography (CBCT) records.
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