EdenteV1, Ncbi, Checkpoint, bibRecord, 001388

Photoelastic Stress Analysis in Prosthetic Implants of Different Diameters: Mini, Narrow, Standard or Wide

Identifieur interne : 001388 ( Ncbi/Checkpoint ); précédent : 001387; suivant : 001389

Photoelastic Stress Analysis in Prosthetic Implants of Different Diameters: Mini, Narrow, Standard or Wide

Auteurs : Marcelo Coelho Goiato ; Alves Aldiéris Pesqueira ; Daniela Micheline Dos Santos ; Marcela Filié Haddad ; Amália Moreno

Source :

Journal of Clinical and Diagnostic Research : JCDR [ 2249-782X ] ; 2014.

RBID : PMC:4225983

Abstract

Purpose: This study investigated the biomechanical behavior of screwed partial fixed prosthesis supported by implants with different diameters (2.5 mm; 3.3 mm and 3.75 mm) by using a photoelastic analysis.

Materials and Methods: Six photoelastic models were fabricated in PL-2 resin as single crowns or splinted 3-unit piece. Models were positioned in a circular polariscope and 100-N axial and oblique (45 degrees) loads were applied in the occlusal surface of the crowns by using a universal testing machine (EMIC). The stresses were photographically recorded and qualitatively analyzed using a software (Adobe Photoshop).

Results: Under axial loading, the number of fringes was inversely proportional to the diameter of the implants in the single crown models. In the splinted 3-unit piece, the 3.75-mm implant promoted lower number of fringes regardless of loading area application. Under oblique loading, a slight increase of fringes number was observed for all groups.

Conclusion: The standard implant diameter promoted better stress distribution than the narrow and mini diameter implants. Additionally, the splinted crowns showed a more uniform stress distribution.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4225983

DOI: 10.7860/JCDR/2014/8489.4902
PubMed: 25386531
PubMed Central: 4225983

Affiliations:

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PMC:4225983

Le document en format XML

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<author><name sortKey="Santos, Daniela Micheline Dos" sort="Santos, Daniela Micheline Dos" uniqKey="Santos D" first="Daniela Micheline Dos" last="Santos">Daniela Micheline Dos Santos</name>
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<author><name sortKey="Haddad, Marcela Filie" sort="Haddad, Marcela Filie" uniqKey="Haddad M" first="Marcela Filié" last="Haddad">Marcela Filié Haddad</name>
<affiliation><nlm:aff id="aff4"> Adjunct Professor,<institution>Federal University of Department of Dental Materials and Prosthodontics</institution>
, Alfenas -<addr-line>UNIFAL</addr-line>
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<author><name sortKey="Moreno, Amalia" sort="Moreno, Amalia" uniqKey="Moreno A" first="Amália" last="Moreno">Amália Moreno</name>
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<affiliation><nlm:aff id="aff1"> Adjunct Professor, Department of Dental Materials and Prosthodontics,<institution>Araçatuba School of Dentistry, São Paulo State University</institution>
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<author><name sortKey="Pesqueira, Alves Aldieris" sort="Pesqueira, Alves Aldieris" uniqKey="Pesqueira A" first="Alves Aldiéris" last="Pesqueira">Alves Aldiéris Pesqueira</name>
<affiliation><nlm:aff id="aff2"> Associate Professor, Department of Dental Materials and Prosthodontics,<institution>Araçatuba School of Dentistry, São Paulo State University-UNESP</institution>
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<author><name sortKey="Santos, Daniela Micheline Dos" sort="Santos, Daniela Micheline Dos" uniqKey="Santos D" first="Daniela Micheline Dos" last="Santos">Daniela Micheline Dos Santos</name>
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<front><div type="abstract" xml:lang="en"><p><bold>Purpose:</bold>
 This study investigated the biomechanical behavior of screwed partial fixed prosthesis supported by implants with different diameters (2.5 mm; 3.3 mm and 3.75 mm) by using a photoelastic analysis.</p>
<p><bold>Materials and Methods:</bold>
 Six photoelastic models were fabricated in PL-2 resin as single crowns or splinted 3-unit piece. Models were positioned in a circular polariscope and 100-N axial and oblique (45 degrees) loads were applied in the occlusal surface of the crowns by using a universal testing machine (EMIC). The stresses were photographically recorded and qualitatively analyzed using a software (Adobe Photoshop).</p>
<p><bold>Results:</bold>
 Under axial loading, the number of fringes was inversely proportional to the diameter of the implants in the single crown models. In the splinted 3-unit piece, the 3.75-mm implant promoted lower number of fringes regardless of loading area application. Under oblique loading, a slight increase of fringes number was observed for all groups.</p>
<p><bold>Conclusion:</bold>
 The standard implant diameter promoted better stress distribution than the narrow and mini diameter implants. Additionally, the splinted crowns showed a more uniform stress distribution.</p>
</div>
</front>
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<name sortKey="Haddad, Marcela Filie" sort="Haddad, Marcela Filie" uniqKey="Haddad M" first="Marcela Filié" last="Haddad">Marcela Filié Haddad</name>
<name sortKey="Moreno, Amalia" sort="Moreno, Amalia" uniqKey="Moreno A" first="Amália" last="Moreno">Amália Moreno</name>
<name sortKey="Pesqueira, Alves Aldieris" sort="Pesqueira, Alves Aldieris" uniqKey="Pesqueira A" first="Alves Aldiéris" last="Pesqueira">Alves Aldiéris Pesqueira</name>
<name sortKey="Santos, Daniela Micheline Dos" sort="Santos, Daniela Micheline Dos" uniqKey="Santos D" first="Daniela Micheline Dos" last="Santos">Daniela Micheline Dos Santos</name>
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Photoelastic Stress Analysis in Prosthetic Implants of Different Diameters: Mini, Narrow, Standard or Wide

Photoelastic Stress Analysis in Prosthetic Implants of Different Diameters: Mini, Narrow, Standard or Wide

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Abstract

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