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Objective: The aim of this study was to compare the scanning accuracy of two different intra-oral scanners- MEDIT i500 and TRIOS 3 shape in reproducing orthodontic bracket dimensions.
Materials And Methods: This in vivo cross-sectional study comprised seven subjects with a full complement of permanent dentition without third molars. Complete arch scanning was carried out with two intraoral scanners, such as MEDIT i500, TRIOS 3 shape, after bonding with brackets. The control group consisted of bracket dimensions measured directly by using Vernier calipers before bonding. Bracket dimensions of three-dimensional (3D) images were measured by using OrthoAnalyzer software. The accuracy of intraoral scanning was investigated by comparing bracket dimensions among the three groups using One-way ANOVA and Post-Hoc Tukey HSD test, and by evaluating outcomes for each quadrant and an individual tooth in complete-arch scans.
Results: When comparing bracket dimensions of 3D images with manual measurements using a traditional Vernier caliper, MEDIT i500 showed no significant difference when compared to the control group (p>0.05) in full arch scanning as well as the quadrant and single tooth scans in complete arch scanning. TRIOS 3 shape showed a significant difference when compared to the control and MEDIT i500 group (p<0.05) for all parameters.
Conclusions: MEDIT i500 showed higher accuracy and better reproduction of orthodontic bracket dimensions than TRIOS 3 shape.
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http://dx.doi.org/10.26355/eurrev_202309_33548 | DOI Listing |
Proc Inst Mech Eng H
August 2025
Department of Mechanical Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India.
In fixed appliances, archwire rotation transfer the applied forces to the bracket which causes repositioning of the crown or roots of a tooth. Understanding this process is difficult due to the complex geometry and miniature dimensions of the bracket and archwire. In this work, an experimental setup was designed, and fabricated to measure the torque induced in the bracket-archwire-ligature combinations and to find the tie-wing deformation for varying archwire rotations.
View Article and Find Full Text PDFJ Pharm Bioallied Sci
June 2025
Preventive Dentistry Department, College of Dentistry, Jouf University, Sakaka, Saudi Arabia.
Background: 4D printing, an evolution of 3D printing, incorporates time as the fourth dimension to enable shape-changing materials to respond to external stimuli. Its application in orthodontics is a burgeoning field, offering possibilities for self-adjusting brackets that adapt dynamically to the biomechanical requirements of tooth movement. This study evaluates the feasibility and efficacy of 4D-printed self-adjusting brackets in achieving controlled and dynamic orthodontic tooth movement.
View Article and Find Full Text PDFJ Clin Med
June 2025
Faculty of Dentistry, PHENIKAA University, Hanoi 12116, Vietnam.
This study investigated the use of artificial intelligence (AI) in the design of lingual bracket indirect bonding trays and its association with bracket transfer accuracy using three-dimensional (3D) printing. Digital impressions of patient's dental arches were captured using an intraoral scanner, and orthodontic setups were virtually constructed. Brackets were virtually positioned in their ideal locations using the digital setups guided by virtual archwire templates.
View Article and Find Full Text PDFPeerJ
June 2025
Faculty of Dentistry, Phenikaa University, Hanoi, Vietnam.
Background: Lingual orthodontic treatment requires precise bracket positioning to ensure optimal outcomes. This study aimed to compare the transfer accuracy of fully enclosed (FE) and partially enclosed (PE) three-dimensionally (3D) printed indirect bonding trays for lingual brackets, focusing on linear and angular errors, and to evaluate their clinical applicability.
Materials And Methods: A total of 20 patients with 498 brackets bonded on both arches were included in this study.
Neural Netw
September 2025
Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, T6G 2G1, Alberta, Canada. Electronic address:
To accurately compute data-based prediction of Hamiltonian systems, it is essential to utilize methods that preserve the structure of the equations over time. We consider a particularly challenging case of systems with interacting parts that do not reduce to pure momentum evolution. Such systems are essential in scientific computations, such as discretization of a continuum elastic rod, which can be viewed as the group of rotations and translations SE(3).
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