Photoelastic stress analysis of implant-tooth connected prostheses with segmented and nonsegmented abutments

Ochiai, Kent T.; Ozawa, Shogo; Caputo, Angelo A.; Nishimura, Robert N.

doi:10.1016/s0022-3913(03)00167-7

Cited by 49 publications

(61 citation statements)

References 5 publications

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“…This change changes causes phase differences on the light wave running through the model, so the tension line pattern occurs can be observed. 15 Model to be tested is made from transparent polymer. The characteristic of the transparent polymer materials is that when the material is lighted by polarized light, a color pattern will occur.…”

Section: Photo Elastic Basic Theorymentioning

confidence: 99%

“…The polariscope is an optical device using polarized light nature in its operation. 15 The photo elastic method is used because this technique gives visual display of the load received by the anchorage teeth, remaining ridge and is able to show the load that can be read on each point in terms of the direction and the size of the load. 21 Besides, several elements of the research and the condition can also be used to visualize load occurs in the model.…”

Section: Photo Elastic Basic Theorymentioning

confidence: 99%

“…4 This research is performed using a technique called photo elastics found by David Brewster in 1816. 15 In this method, an optical instruments consist of the light source, polarisator and analysator to get the direction and tension pattern in the model. A model of the element to be tested is made from a transparent polymer and loaded according to the loading type.…”

Section: Introductionmentioning

confidence: 99%

“…A model of the element to be tested is made from a transparent polymer and loaded according to the loading type. 15 …”

Section: Introductionmentioning

confidence: 99%

“…The criteria of the photo elastic material include: the model material should be transparent, has a high sensitivity so that it can give more isochromatic lines in similar loading and has optical nature. 15 With this criteria, when it is exposed to polarized light, the material will give isochromatic line pattern description. The material used in this research is the elastic Lycal resin to simulate alveolar bone while the teeth used are natural teeth.…”

mentioning

confidence: 99%

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RPI and RPL clasp masticatory load distribution in lower free end denture case with photoelastic methods

2007

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The extent and direction of movement of removable partial dentures during function are influenced by the nature of supporting structures and the design of the prosthesis since forces are transmitted to abutment teeth by rest, guide planes, and direct retainers during functional movements. Because of the lack of tooth support distally, the denture base will have tissueward underfunction proportionate to the quality (displaceability) of the supporting soft tissue, the accuracy of the denture base, and the total occlusal load applied. The movement of the base under function determines the occlusal efficiency of the partial denture and the degree to which the abutment teeth are subjected to torque and tipping stresses.The purpose of this study is to know the functional load exerts with RPI and RPL direct retainer in bilateral distal extension. This study is a laboratory experiment employing samples of 5 frames using RPI and 5 frames using RPL direct retainer design. Testing was conducted by Vishay Teaching Polariscope type 080. The result was noted and analyzed statistically using ANOVA.The result of this study indicates that F calculation value for frame with RPI and RPL direct retainer design is 5,35 and 6,11 Mpa; F calculation for the occlusal load distribution on first premolar and edentulous area is 276,90 Mpa and 171,53 Mpa; F calculation for occlusal load distribution on first premolar and edentulous area employing RPI and RPL direct retainer design is 9, 17 and 11,96 Mpa. This statistical calculation shows that there is a significant difference between RPI and RPL direct retainer design, the occlusal load concentrated at edentulous area either RPI or RPL direct retainer, and the occlusal load distribution between the first premolar and edentulous area are more uniform on RPI direct retainer design.

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Section: Photo Elastic Basic Theorymentioning

confidence: 99%

Section: Photo Elastic Basic Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…A model of the element to be tested is made from a transparent polymer and loaded according to the loading type. 15 …”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%