
pmid: 23965442
The goal of every prosthetic management is to simulate nature and be in harmony with nature within the physiological limits. The occlusal forces on a fixed dental prosthesis are transmitted to the surrounding structures through pontics, connectors and retainers and more stresses are seen at the connector region. To analyze the stress patterns in cast and soldered connectors between the two pontics and between the retainer and pontic of a four unit fixed dental prosthesis on axial and non axial loading and also to observe and ascertain the need to modify the design of the rigid connectors.Subsequently four models each of cast and soldered connectors with cylindrical and triangular design, of dimension 3 × 4 mm and thickness 0.5 mm was designed for the study. The first premolar and second molar were considered as the abutments and 2 nd premolar and 1 st molar as the pontics. The analysis was done using ANSYS version 8.0 software and by placing axial and non-axial load of 40 Newtons each.Von Misses stresses were observed at the connector region between the two pontics, especially in the cervical region.The cylindrical cast connectors showed less stress in comparison to triangular design and the difference in the stress distribution of cast and soldered connectors were marginal.The occlusal forces on a fixed dental prosthesis are transmitted to the surrounding structures through pontics, connectors and retainers with maximum stresses concentrated at the connectors. Hence this three-dimensional finite element analysis study investigated stress distribution in a four unit posterior fixed dental prosthesis, having cylindrical and triangular connector designs.
Silver, Surface Properties, Finite Element Analysis, finite element analysis, Bite Force, Imaging, Three-Dimensional, Elastic Modulus, Materials Testing, Alloys, Humans, Computer Simulation, Connector designs, Denture Design, Dental Casting Technique, Crowns, RK1-715, Denture Retention, fixed dental prosthesis, Dentistry, Denture, Partial, Fixed, Chromium Alloys, Stress, Mechanical, Dental Soldering, Palladium
Silver, Surface Properties, Finite Element Analysis, finite element analysis, Bite Force, Imaging, Three-Dimensional, Elastic Modulus, Materials Testing, Alloys, Humans, Computer Simulation, Connector designs, Denture Design, Dental Casting Technique, Crowns, RK1-715, Denture Retention, fixed dental prosthesis, Dentistry, Denture, Partial, Fixed, Chromium Alloys, Stress, Mechanical, Dental Soldering, Palladium
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