Photo-elastic investigation of influence of dental implant shape and prosthetic materials to patterns of stress distribution.

E. de Castro Ferreira, S. Corbella, L. C. Zanatta, S. Taschieri, M. del Fabbro, S. A. Gehrke

Research output: Contribution to journalArticle

Abstract

Occlusal loading has to be considered a key factor influencing bone resorption due to the stress transmitted to surrounding tissues by the implant-abutment structure. The aim of this study was to evaluate, through a photo-elastic investigation, the patterns of tensions distribution of two different implant shapes, which were cylindrical and conical. A 100N load was applied to two implant-abutment structures (with and without a metal-ceramic crown) incorporated in photo-elastic resin. Modification in light refraction were recorded and analyzed through a computerized software. Measurements of stripe extension and position were evaluated. Stress distribution around tapered implant was evaluated to be more uniform than in cylindrical one which demonstrated a high stress concentration at the more cervical region and in the apical region. The presence of a metal-ceramic crown caused an increase in tensions at the implant-resin interface. Conical implants distributed stresses to a larger and well-defined volume of resin and this can cause a decrease of forces acting at the interface. This could be due to the "wedge effect" of this fixture shape which could be considered superior in terms of stress distribution than cylindrical one.

Original languageEnglish
Pages (from-to)263-272
Number of pages10
JournalMinerva Stomatologica
Volume61
Issue number6
Publication statusPublished - Jun 2012

Fingerprint

Dental Implants
Ceramics
Crowns
Metals
Software
Light
bone resorption factor

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Photo-elastic investigation of influence of dental implant shape and prosthetic materials to patterns of stress distribution. / de Castro Ferreira, E.; Corbella, S.; Zanatta, L. C.; Taschieri, S.; del Fabbro, M.; Gehrke, S. A.

In: Minerva Stomatologica, Vol. 61, No. 6, 06.2012, p. 263-272.

Research output: Contribution to journalArticle

@article{cd24ac8756f240de83277c14d2685caa,
title = "Photo-elastic investigation of influence of dental implant shape and prosthetic materials to patterns of stress distribution.",
abstract = "Occlusal loading has to be considered a key factor influencing bone resorption due to the stress transmitted to surrounding tissues by the implant-abutment structure. The aim of this study was to evaluate, through a photo-elastic investigation, the patterns of tensions distribution of two different implant shapes, which were cylindrical and conical. A 100N load was applied to two implant-abutment structures (with and without a metal-ceramic crown) incorporated in photo-elastic resin. Modification in light refraction were recorded and analyzed through a computerized software. Measurements of stripe extension and position were evaluated. Stress distribution around tapered implant was evaluated to be more uniform than in cylindrical one which demonstrated a high stress concentration at the more cervical region and in the apical region. The presence of a metal-ceramic crown caused an increase in tensions at the implant-resin interface. Conical implants distributed stresses to a larger and well-defined volume of resin and this can cause a decrease of forces acting at the interface. This could be due to the {"}wedge effect{"} of this fixture shape which could be considered superior in terms of stress distribution than cylindrical one.",
author = "{de Castro Ferreira}, E. and S. Corbella and Zanatta, {L. C.} and S. Taschieri and {del Fabbro}, M. and Gehrke, {S. A.}",
year = "2012",
month = "6",
language = "English",
volume = "61",
pages = "263--272",
journal = "Minerva Stomatologica",
issn = "0926-4970",
publisher = "Edizioni Minerva Medica S.p.A.",
number = "6",

}

TY - JOUR

T1 - Photo-elastic investigation of influence of dental implant shape and prosthetic materials to patterns of stress distribution.

AU - de Castro Ferreira, E.

AU - Corbella, S.

AU - Zanatta, L. C.

AU - Taschieri, S.

AU - del Fabbro, M.

AU - Gehrke, S. A.

PY - 2012/6

Y1 - 2012/6

N2 - Occlusal loading has to be considered a key factor influencing bone resorption due to the stress transmitted to surrounding tissues by the implant-abutment structure. The aim of this study was to evaluate, through a photo-elastic investigation, the patterns of tensions distribution of two different implant shapes, which were cylindrical and conical. A 100N load was applied to two implant-abutment structures (with and without a metal-ceramic crown) incorporated in photo-elastic resin. Modification in light refraction were recorded and analyzed through a computerized software. Measurements of stripe extension and position were evaluated. Stress distribution around tapered implant was evaluated to be more uniform than in cylindrical one which demonstrated a high stress concentration at the more cervical region and in the apical region. The presence of a metal-ceramic crown caused an increase in tensions at the implant-resin interface. Conical implants distributed stresses to a larger and well-defined volume of resin and this can cause a decrease of forces acting at the interface. This could be due to the "wedge effect" of this fixture shape which could be considered superior in terms of stress distribution than cylindrical one.

AB - Occlusal loading has to be considered a key factor influencing bone resorption due to the stress transmitted to surrounding tissues by the implant-abutment structure. The aim of this study was to evaluate, through a photo-elastic investigation, the patterns of tensions distribution of two different implant shapes, which were cylindrical and conical. A 100N load was applied to two implant-abutment structures (with and without a metal-ceramic crown) incorporated in photo-elastic resin. Modification in light refraction were recorded and analyzed through a computerized software. Measurements of stripe extension and position were evaluated. Stress distribution around tapered implant was evaluated to be more uniform than in cylindrical one which demonstrated a high stress concentration at the more cervical region and in the apical region. The presence of a metal-ceramic crown caused an increase in tensions at the implant-resin interface. Conical implants distributed stresses to a larger and well-defined volume of resin and this can cause a decrease of forces acting at the interface. This could be due to the "wedge effect" of this fixture shape which could be considered superior in terms of stress distribution than cylindrical one.

UR - http://www.scopus.com/inward/record.url?scp=84871696200&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84871696200&partnerID=8YFLogxK

M3 - Article

C2 - 22669056

AN - SCOPUS:84871696200

VL - 61

SP - 263

EP - 272

JO - Minerva Stomatologica

JF - Minerva Stomatologica

SN - 0926-4970

IS - 6

ER -