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Restorative dentistry is the repairing of damaged teeth and restoring oral health and function. Dental implants are typically placed within the cortical bone of the jaw to provide stability and support for prosthetic restorations. The successful restoration of complex anatomical features of the maxillary anterior is difficult for prosthodontists. Using a 3D slicer, CT scan images were used to create a detailed three-dimensional model of the maxilla bone. This study utilizes ANSYS Workbench, a finite element software program, to analyze the abutment angles, ranging from 0° to 25°, and the impact stress distribution within peri-implant bone. The outcomes of our studies align with and substantiate certain evidence in the literature documenting bone resorption, specifically at the level of the implant neck and near the cortical bone. The study aims to provide a comprehensive understanding of angled abutment stress patterns in the bone surrounding dental implants, offering valuable insights for clinical applications in critical areas of the mouth. [ABSTRACT FROM AUTHOR]

In dental implant insertion, an artificial foundation is prepared for the prosthetic device, which involves the surgical positioning of the implant in the jaw bone. The success of dental implants relies on the osseointegration process. The biomechanical factors, such as stress and strain, developed during the insertion affect the jawbone and its surroundings. In this current study, the stresses during the implant insertion in the mandibular jawbone bone are analyzed using three-dimensional explicit dynamic analysis, and the Cowper–Symonds model is implemented with the damage model. The implant's design has a substantial impact on stress distribution within the cancellous bone during the insertion procedure. The stress variation takes place as the implant moves into the pre-drilled hole. This is because of the contact between the bone and the fixture on the implant. The upper edge of the predrilled site shows that the stresses are more at the crestal region of the implant due to surface area. There is a gradual increase in the stress level as the implant reaches the lower edge from the top edge. This is because of the concept of mechanical interlocking. Clinicians can use this information to anticipate and address potential stress-related challenges during implant placement. [ABSTRACT FROM AUTHOR]

The selection of abrasive material and parameters of the Air-Abrasion device for a particular application is a crucial detail. However, there are no standard recommendations or manuals for choosing these details; the operator must depend on his experience and knowledge of the procedure to select the best possible material and set of parameters. This short review attempts to identify some of the effects that the selection of material and parameters could have on the performance of the Air-Abrasion procedure for a particular application. The material and parameter data are collected from various studies and categorized according to the most popular materials in use right now. These studies are then analyzed to arrive at some inferences on the performance of Air-Abrasion materials and parameters. This review arrives at a few conclusions on the effectiveness of a material and parameter set, and that there is potential for developments in the area of standardizing parameter selection; also, there is scope for further studies on Bio-Active Glass as an alternative to the materials currently used in Air-Abrasion. [ABSTRACT FROM AUTHOR]

This investigation delves into the dynamics of stress distribution during particle impacts on Incisor teeth, revealing the significant roles of particle size, impact angle, and standoff distance. An explicit dynamics study highlights a crucial revelation: optimal outcomes are achieved with a particle size of 250 µm, a 5 mm standoff distance, and an 80-degree impact angle, resulting in maximal stress manifestation. The analysis highlights a direct relationship between particle size and stress distribution, where larger particles amplify stress levels, emphasizing its pivotal role in determining stress distribution patterns. Additionally, an investigation of the Signal-to-Noise (SN) ratio reaffirms this trend, validating the direct correlation between stress distribution magnitude and abrasive particle size. Interestingly, variations in standoff distance and impact angle exhibit relatively minor effects. The ANOVA further strengthens these findings, with lower p-values for particle size and impact angle, highlighting their substantial contributions to stress distribution. Exploring interactions uncovers significant relationships between abrasive particle size and impact angle, as well as impact angle and standoff distance, with implications for stress distribution optimization. This study offers a broad investigation of the effects of abrasive particle size, standoff distance, and handle angulation on stress distribution during air abrasive procedures in dentistry. Through advanced computational modelling techniques, we interpret the complex interactions between these parameters and their impact on tooth surface integrity. The research findings not only provide valuable insights into optimizing procedure parameters for enhanced safety and efficacy but also contribute to the advancement of knowledge in the field of dental materials and techniques. [ABSTRACT FROM AUTHOR]

Hip implants are available in various shapes and sizes. This study aims to select the better hip implant stem design and the optimal material that can be used for the implant. For all the material combinations, radial clearance of 0, 0.1, 0.2, and 0.3 had been given between each of the junctions. Analytical calculation using Hertz contact stress formulation to find the contact pressure has been employed for a load of 2300N, which goes hand in hand with the Finite element method (FEM). The results showed that the optimal combination consists of a CoCr alloy stem, femoral head, and cup material, paired with a UHMWPE liner, for the most effective performance. This study thoroughly evaluates various hip implant options and offers important insights into their effectiveness. The results of this research will assist in choosing the most appropriate hip implant design and material, leading to better patient outcomes and advancements in medical technology for the betterment of mankind. [ABSTRACT FROM AUTHOR]

AA6061, a popular structural material, has found widespread usage in the automotive and aerospace domains. The current work explored the effect of the improvement of mechanical properties on the machinability of AA6061 through finite element analysis. Three compositions of AA6061 containing 2 wt.% graphite and 0, 2, 4 wt.% granite dust were fabricated by stir casting. In the current work, a finite element model of a slab milling cutter with eight teeth was designed with high-speed steel (HSS) as the tool material. The LS-DYNA module of ANSYS was used for simulation of the milling operation, selecting two peripheral speeds for the cutter during the machining of the workpiece. Surface milling was carried out on the cast slabs of the three compositions to study chip formation. At higher cutting speeds, there was an increase in the von Mises stress as well as material deformation. An increase in the weight fraction of the ceramic fillers led to a corresponding increase in the von Mises stress and material deformation. The experimental results from face milling of the three compositions showed that the surface roughness increased with an increase in the content of ceramic fillers and a decrease in chip size. [ABSTRACT FROM AUTHOR]