Photoelastic Analysis of Biomechanical Behavior of Single and Multiple Fixed Partial Prostheses With Different Prosthetic Connections

2011 ◽  
Vol 22 (6) ◽  
pp. 2060-2063 ◽  
Author(s):  
Bianca Piccolotto Tonella ◽  
Eduardo Piza Pellizzer ◽  
Rosse Mary Falcón-Antenucci ◽  
Renato Ferraço ◽  
Daniel Augusto de Faria Almeida
Keyword(s):  
Biomechanical Behavior ◽  
Photoelastic Analysis

Biomechanical behavior of dental implants—photoelastic analysis

2019 ◽  
pp. 285-290
Author(s):  
V.N. Gomes ◽  
D. Tripak ◽  
S. Oliveira ◽  
J.C. Reis Campos Figueiral ◽  
M.H. Figueiral
Keyword(s):  
Dental Implants ◽  
Biomechanical Behavior ◽  
Photoelastic Analysis

EFFECT OF DENTAL IMPLANTOLOGY ON THE BIOMECHANICAL BEHAVIOR OF ALVEOLAR BONE

2018 ◽  
Vol 16 (6) ◽  
pp. 579-593
Author(s):  
Abdelkader Drai ◽  
Ali Merdji ◽  
Abdulmohsen Albedah ◽  
Bel-Abbes Bachir Bouiadjra ◽  
Faycal Benyahia ◽  
...  
Keyword(s):  
Alveolar Bone ◽  
Biomechanical Behavior

Parametric Optimization of Dental Implants

2020 ◽  
Vol 22 (4) ◽  
pp. 1061-1076
Author(s):  
Wafa Bensmain ◽  
Mohammed Benlebna ◽  
Boualem Serier ◽  
Bel Abbes ◽  
Bachir Bouiadjra
Keyword(s):  
Dental Implants ◽  
Clinical Success ◽  
Equivalent Stress ◽  
Radius Of Curvature ◽  
Geometrical Parameters ◽  
Neck Size ◽  
Biomechanical Behavior ◽  
Dynamic Charging ◽  
The Stability ◽  
Masticatory Process

AbstractOsseointegration is a fundamental phenomenon of dental implantology. It ensures the stability, the safety and the durability of dental implants and predictable clinical success in long-term. The geometric form of the implant is a defining parameter of osseointegration and implant-bone charge transfer. This is the essential constitutes of this study. In fact, we demonstrate using the finite elements method with tridimensional numerical computations, that the geometrical parameters of the implant conditionate the level and the repartition of the stresses, induced in the cortical bone and the spongy bone during the masticatory process, simulated here by dynamic charging. The effect of several parameters [size and conicity of the implant neck, size and radius of curvature of the implant apex] and the shape of the implant corps on the biomechanical behavior of the bone. The latest was analyzed in terms of variation of the equivalent stress induced in the bone. The purpose of this analysis was the developing of an implant form allowing stress relaxation, during the mastication process, in the living tissue.

scholarly journals The Influence of Cement Layer Thickness on the Stress State of Metal Inlay Restorations—Photoelastic Analysis

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 599
Author(s):  
Grzegorz Sokolowski ◽  
Michal Krasowski ◽  
Agata Szczesio-Wlodarczyk ◽  
Bartlomiej Konieczny ◽  
Jerzy Sokolowski ◽  
...  
Keyword(s):  
Stress State ◽  
Layer Thickness ◽  
Resin Composite ◽  
Water Immersion ◽  
Cylindrical Sample ◽  
Resin Cement ◽  
Adhesive Resin ◽  
Cement Layer ◽  
Contraction Stress ◽  
Photoelastic Analysis

The successful restoration of teeth requires a good connection between the inlay and natural tissue. A strong bond may improve retention and reinforce tooth structure. The purpose of this study was to evaluate the influence of cement layer thickness on contraction stress generated during photopolymerization, and to determine the changes in stress state of the cement occurring during aging in water (over 84 days). Two cements were used: resin composite cement (NX3) and self-adhesive resin cement (Maxcem Elite Chroma). A cylindrical sample made of CuZn alloy was used to imitate the inlay. The stress state was measured by photoelastic analysis. The contraction stress of the inlay restoration was calculated for cement layer thicknesses of 25 µm, 100 µm, 200 µm, and 400 µm. For both tested materials, the lowest contraction stress was observed for the thinnest layer (25 µm), and this increased with thickness. Following water immersion, a significant reduction in contraction stress was observed due to hygroscopic expansion. Applying a thin layer (approximately 25 µm) of composite and self-adhesive resin cements resulted in high levels of expansion stresses (over −6 MPa) after water aging.

scholarly journals Effect of frame design and veneering material on biomechanical behavior of zirconia dental crowns veneered with overpressing ceramics

2017 ◽  
Vol 36 (3) ◽  
pp. 275-281 ◽  
Author(s):  
Liliana POROJAN ◽  
Florin TOPALĂ ◽  
Sorin POROJAN ◽  
Cristina SAVENCU
Keyword(s):  
Frame Design ◽  
Biomechanical Behavior ◽  
Dental Crowns

scholarly journals Finite element modeling of multiple density materials of bone specimens for biomechanical behavior evaluation

2021 ◽  
Vol 3 (9) ◽  
Author(s):  
Sebastián Irarrázaval ◽  
Jorge Andrés Ramos-Grez ◽  
Luis Ignacio Pérez ◽  
Pablo Besa ◽  
Angélica Ibáñez
Keyword(s):  
Finite Elements ◽  
Computational Models ◽  
Reaction Force ◽  
Elastic Stiffness ◽  
Finite Elements Method ◽  
Mechanical Resistance ◽  
Assessment Procedure ◽  
Axial Tomography ◽  
Biomechanical Behavior ◽  
Ct Data

AbstractThe finite elements method allied with the computerized axial tomography (CT) is a mathematical modeling technique that allows constructing computational models for bone specimens from CT data. The objective of this work was to compare the experimental biomechanical behavior by three-point bending tests of porcine femur specimens with different types of computational models generated through the finite elements’ method and a multiple density materials assignation scheme. Using five femur specimens, 25 scenarios were created with differing quantities of materials. This latter was applied to computational models and in bone specimens subjected to failure. Among the three main highlights found, first, the results evidenced high precision in predicting experimental reaction force versus displacement in the models with larger number of assigned materials, with maximal results being an R2 of 0.99 and a minimum root-mean-square error of 3.29%. Secondly, measured and computed elastic stiffness values follow same trend with regard to specimen mass, and the latter underestimates stiffness values a 6% in average. Third and final highlight, this model can precisely and non-invasively assess bone tissue mechanical resistance based on subject-specific CT data, particularly if specimen deformation values at fracture are considered as part of the assessment procedure.

scholarly journals Fascial or Muscle Stretching? A Narrative Review

2020 ◽  
Vol 11 (1) ◽  
pp. 307
Author(s):  
Carla Stecco ◽  
Carmelo Pirri ◽  
Caterina Fede ◽  
Can A. Yucesoy ◽  
Raffaele De Caro ◽  
...  
Keyword(s):  
Muscular Contraction ◽  
Deep Fascia ◽  
Static Stretching ◽  
Force Transmission ◽  
Myofascial Force Transmission ◽  
Biomechanical Behavior ◽  
Passive Stretching ◽  
Muscle Stretching ◽  
Major Target ◽  
Stretching Exercises

Stretching exercises are integral part of the rehabilitation and sport. Despite this, the mechanism behind its proposed effect remains ambiguous. It is assumed that flexibility increases, e.g., action on muscle and tendon, respectively, but this is not always present in the stretching protocol of the exercises used. Recently, the fasciae have increased popularity and seems that they can have a role to define the flexibility and the perception of the limitation of the maximal range of motion (ROM). Deep fascia is also considered a key element to transmit load in parallel bypassing the joints, transmitting around 30% of the force generated during a muscular contraction. So, it seems impossible dividing the action of the muscles from the fasciae, but they have to be considered as a “myofascial unit”. The purpose of this manuscript is to evaluate the mechanical behavior of muscles, tendons, and fasciae to better understand how they can interact during passive stretching. Stress-strain values of muscle, tendon and fascia demonstrate that during passive stretching, the fascia is the first tissue that limit the elongation, suggesting that fascial tissue is probably the major target of static stretching. A better understanding of myofascial force transmission, and the study of the biomechanical behavior of fasciae, with also the thixotropic effect, can help to design a correct plan of stretching.

scholarly journals Effect of simulated metastatic lesions on the biomechanical behavior of the proximal femur

2017 ◽  
Vol 35 (11) ◽  
pp. 2407-2414 ◽  
Author(s):  
Emir Benca ◽  
Andreas Reisinger ◽  
Janina M. Patsch ◽  
Lena Hirtler ◽  
Alexander Synek ◽  
...  
Keyword(s):  
Proximal Femur ◽  
Biomechanical Behavior ◽  
Metastatic Lesions
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