Superimposition of craniofacial structures from radiographic examination has been always used for assessing changes in the maxilla-mandibular complexes, especially for the evaluation of potential changes occurring during growth as well as after orthodontic treatment and/or maxillofacial surgery. However, the availability of cone beam computed tomography (CBCT) and the recent advancement in 3D imaging have allowed the development of specific techniques for the registration and superimposition of virtual three-dimensional anatomical structures, improving the diagnosis and treatment plan strategies. In the present paper, it will be discussed the evolution of superimposition techniques from the beginning (2D) to the newest 3D approach, describing the most used methods and their main advantages and disadvantages, focusing primarily on accuracy and reproducibility of each technique.
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http://dx.doi.org/10.1155/2021/6677133 | DOI Listing |
Polymers (Basel)
January 2025
Department of Advanced Prosthodontics, Institute of Science Tokyo, Tokyo 113-8510, Japan.
Light-polymerizing reline materials offer improved chairside workability compared to conventional auto-polymerizing reline materials, addressing the partial denture (RPD) incompatibility caused by residual ridge resorption owing to long-term use. This study evaluates the fitting accuracy of relined materials by combining conventional fitting tests with three-dimensional (3D) measurements for detailed analysis. Light-polymerizing reline material (HikariLiner, Tokuyama, Tokyo, Japan, LP) and auto-polymerizing material (Rebase III, Tokuyama, AP) were used.
View Article and Find Full Text PDFWorld J Biol Psychiatry
January 2025
Division of Genetics, Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.
Background: Genes associated with global developmental delay (GDD) and intellectual disability (ID) are increasingly being identified through next-generation sequencing (NGS) technologies. This study aimed to identify novel mutations in GDD/ID phenotypes through whole-exome sequencing (WES) and additional analyses.
Material And Methods: WES was performed on 27 subjects, among whom 18 were screened for potential novel mutations.
Dent J (Basel)
December 2024
Department of Prosthodontics, University of Rennes, 35043 Rennes, France.
The present article describes a step-by-step maximally digitalized workflow protocol with computer-aided design and computer-aided manufacturing (CAD/CAM) in partial-arch edentulous patients rehabilitated with fixed dental prostheses and removable partial dentures (FDPs and RPDs). Facial digitalization, intraoral scans, and functional mandibular movement recordings were used to create a 4D virtual patient on commercially available CAD software. The fixed components including post-and-cores, both metal-ceramic with extra-coronal attachment and monolithic zirconia crowns, and the RPDs were manufactured by computer numerical controlled direct milling.
View Article and Find Full Text PDFOrthod Fr
January 2025
35C impasse des brasseries, 54700 Pont-à-Mousson, France
Introduction: Modern orthodontics is undergoing a revolution with the advent of 3D imaging, offering unprecedented perspectives for the evaluation and treatment of facial asymmetries. These asymmetries, whether mandibular, maxillary, or dental, require a deeper understanding of their causes and their aesthetic and functional impact. Additionally, associated functional imbalances must be addressed for comprehensive management.
View Article and Find Full Text PDFOral Maxillofac Surg
January 2025
Research Center for Digital Technologies in Dentistry and CAD/CAM, Department of Dentistry, Faculty of Medicine and Dentistry, Danube Private University, Steiner Landstraße 123, Krems an der Donau, 3500, Austria.
Purpose: Precise implant placement is essential for optimal functional and aesthetic outcomes. Digital technologies, such as computer-assisted implant surgery (CAIS), have improved implant outcomes. However, conventional methods such as static and dynamic CAIS (dCAIS) require complex equipment.
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