A comparison of stress distribution and flexion among various designs of bar attachments for implant overdentures: A three dimensional finite element analysis

Prakash, Vijay; D’Souza, Mariette; Adhikari, Raviraja

doi:10.4103/0970-9290.49058

Cited by 21 publications

(25 citation statements)

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“…Many researchers believe that the deformation of mandible due to muscular forces affects the stresses in peri-implant bone (Parkash et al (2009);Meijer et al (1993);Menicucci et al (1998);Meijer et al (1996);Cruz et al (2003)). Consequently, application of proper musculature is a necessary step toward simulation of actual results.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

“…Some of the previous works (Celik and Uludag (2007); Meijer et al (1994)), have not been able to find any difference in the clinical state of patients treated either with two or four implants. However, Parkash et al (2009) concluded that four-implant systems are better choices than two-implant systems.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have evaluated the effect of these attachments on implantretained mandibular overdentures (Daas et al (2008); Parkash et al (2009); Celik and Uludag (2007); Meijer et al (1993) and Menicucci et al (1998)). The forces resulted from mastication are transferred to implants and produce stress in peri-implant bone.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, implant-retained overdentures have become one of the most preferred options for a complete treatment of edentulous patients (Daas et al (2008) and Parkash et al (2009)). The high success rate of this therapy is well documented by Celik and Uludag (2007) use complete dentures often experience problems such as pain and insufficient stability of denture during mastication.…”

Section: Introductionmentioning

confidence: 99%

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Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture

Shishesaz

Ahmadzadeh²,

Baharan

2016

Lat. Am. j. solids struct.

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This study compares ball, bar-clip and bar-ball attachment systems for implant-retained mandibular overdentures with three implants. The first implant is placed in the middle of the mandible and the other two are imbedded in the first premolar regions. Linear elastic finite element analysis is used for design analysis. Three dimensional geometry of the mandible is generated from computed tomography. Other parts are modeled using SolidWorks software. The foodstuff is positioned at the right first molar, representing the most frequent masticating situation. To obtain accurate meshindependent results, finite element models are solved using several mesh grids. They are then validated by means of a detailed convergence analysis. The results demonstrate that the highest von-Mises stress in the bone is always located around the neck of the implant, at its upper threads. Ball and bar-ball attachments transfer the highest and lowest stresses to the bone surrounding the implants, respectively. The lowest stresses in the cortical and cancellous bones are due to bar-ball attachment. Yet, the overdenture gets its maximum movement for this arrangement. Consequently, the use of bar-ball attachment is only recommended for the cases in which stress transferred to peri-implant bone is more important than overdenture stability. Among the three treatment designs, ball attachment seems to exhibit the lowest lateral and overall displacements and hence, better overdenture stability.

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Section: Discussion Of Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture

Shishesaz

Ahmadzadeh²,

Baharan

2016

Lat. Am. j. solids struct.

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“…O objetivo das próteses implanto-retidas é resgatar os distúrbios funcionais e estéticos decorrentes de traumas ou cirurgias mutilantes na região de cabeça e pescoço (Kayacan et al, 1997;Chan et al, 1998;Spiekermann et al, 2000;Block, 2003;Fukuda et al, 2004;Koca et al, 2005;Lehmann et al, 2006;Oh;Roumanas, 2006;Aydin, 2007;Nothdurft;Pospiech, 2007;Assunção et al, 2008;Gomes et al, 2008;Prakash et al, 2009;Rettore et al, 2009;Leles et al, 2010;Rossetti et al, 2010).…”

Section: Discussionunclassified

Análise das tensões geradas por prótese obturadora maxilar implanto-retida por meio da análise de elementos finitos

Sousa¹

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RESUMOSousa AA. Avaliação das tensões geradas por prótese obturadora maxilar implantoretida por meio da análise de elementos finitos [tese] Foi realizada uma análise qualitativa, correspondente à escala de tensão máxima principal, com valores quantitativos expressos em MPa. O deslocamento da prótese obturadora na região sem suporte ósseo aumentou em função da diminuição da área de suporte ósseo, do número de implantes e de clipes; a mucosa gengival, o osso cortical e o osso medular sofreram tensões de tração e de compressão que aumentaram em função da diminuição da área de suporte ósseo, do número de implantes e de clipes. Concluiu-se que quanto maior a perda da área de suporte ósseo em uma maxilectomia, maiores serão as forças de tensão e de compressão geradas pelo sistema de retenção barra/clipe nos tecidos remanescentes e maior será a tendência para o deslocamento da prótese.Palavras-chave: Análise de elementos finitos. Prótese obturadora. Implante. Patients submitted to maxillectomy due to oral cancer shall be rehabilitated by means of obturator prosthesis in order to achieve a better quality of life. This study evaluated the biomechanics of implant-retained obturator prostheses analyzing the stress on maxillary osseous and gingivo-mucosal tissues. Finite elements analysis was developed using a 3D digital model based on a computed tomography of an adult man. Files were processed by Software Rhinoceros®, v4.0 SR9 and generated a maxillary BioCAD 3D model, which incorporated the CAD models of the implants and

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Biomechanical Considerations

Ishak¹,

Kadir²

2012

Biomechanics in Dentistry: Evaluation of Different Surgical Approaches to Treat Atrophic Maxilla Patients

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A comparison of stress distribution and flexion among various designs of bar attachments for implant overdentures: A three dimensional finite element analysis

Cited by 21 publications

References 0 publications

Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture

Finite Element Study of Three Different Treatment Designs of a Mandibular Three Implant-Retained Overdenture

Análise das tensões geradas por prótese obturadora maxilar implanto-retida por meio da análise de elementos finitos

Biomechanical Considerations

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