Intrusion in implant-tooth-supported fixed prosthesis: An <i> in vitro</i> photoelastic stress analysis
<b>Background and Objective:</b> Intrusion of natural teeth is a very common and interesting problem associated with implant-assisted fixed partial prostheses. Various theories have been put forth to explain this phenomenon, most of which revolve around the philosophy of exertion of exc...
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Wolters Kluwer Medknow Publications
2008-01-01
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doaj-9894b4ab5fa34ae9b30407099c622bd42020-11-24T23:54:46ZengWolters Kluwer Medknow PublicationsIndian Journal of Dental Research0970-92902008-01-01191611Intrusion in implant-tooth-supported fixed prosthesis: An <i> in vitro</i> photoelastic stress analysisSrinivasan MuraliPadmanabhan T<b>Background and Objective:</b> Intrusion of natural teeth is a very common and interesting problem associated with implant-assisted fixed partial prostheses. Various theories have been put forth to explain this phenomenon, most of which revolve around the philosophy of exertion of excessive forces onto the natural tooth in a combination fixed partial denture. This photoelastic study examines the current theories revolving around intrusion and evaluates whether natural tooth intrusion is a definite possibility in an implant-tooth-connected fixed partial prosthesis. <b> Materials and Methods:</b> A two-dimensional photoelastic method was employed for testing and analysis. Two sets of photoelastic models were fabricated, one depicting a totally tooth-supported situation and the other an implant-tooth-supported situation. A rigid type and non-rigid type of connection were also incorporated into the fixed partial denture used in the both the situations in the study. Loads were applied on the anterior and posterior abutments and the pontic regions in both sets of models and the fringe patterns were photographically recorded for analysis. <b> Results and Conclusion:</b> The forces were proportionately consistent with the increase in applied loads in both the situations. The use of a non-rigid connection did not show any major significance but in fact may be erroneous. The forces were considerably higher in the implant-tooth-connected situation. The results indicated that the differences in the forces exerted were not light and continuous and may not cause tooth intrusion. Natural tooth intrusion may be caused by reasons other than excessive forces and needs further investigation.http://www.ijdr.in/article.asp?issn=0970-9290;year=2008;volume=19;issue=1;spage=6;epage=11;aulast=SrinivasanImplant-tooth combination in <i> fixed partial denture</i> intrusion phenomenonnon-rigid connectionphotoelastic stress analysisrigid connection. |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Srinivasan Murali Padmanabhan T |
spellingShingle |
Srinivasan Murali Padmanabhan T Intrusion in implant-tooth-supported fixed prosthesis: An <i> in vitro</i> photoelastic stress analysis Indian Journal of Dental Research Implant-tooth combination in <i> fixed partial denture</i> intrusion phenomenon non-rigid connection photoelastic stress analysis rigid connection. |
author_facet |
Srinivasan Murali Padmanabhan T |
author_sort |
Srinivasan Murali |
title |
Intrusion in implant-tooth-supported fixed prosthesis: An <i> in vitro</i> photoelastic stress analysis |
title_short |
Intrusion in implant-tooth-supported fixed prosthesis: An <i> in vitro</i> photoelastic stress analysis |
title_full |
Intrusion in implant-tooth-supported fixed prosthesis: An <i> in vitro</i> photoelastic stress analysis |
title_fullStr |
Intrusion in implant-tooth-supported fixed prosthesis: An <i> in vitro</i> photoelastic stress analysis |
title_full_unstemmed |
Intrusion in implant-tooth-supported fixed prosthesis: An <i> in vitro</i> photoelastic stress analysis |
title_sort |
intrusion in implant-tooth-supported fixed prosthesis: an <i> in vitro</i> photoelastic stress analysis |
publisher |
Wolters Kluwer Medknow Publications |
series |
Indian Journal of Dental Research |
issn |
0970-9290 |
publishDate |
2008-01-01 |
description |
<b>Background and Objective:</b> Intrusion of natural teeth is a very common and interesting problem associated with implant-assisted fixed partial prostheses. Various theories have been put forth to explain this phenomenon, most of which revolve around the philosophy of exertion of excessive forces onto the natural tooth in a combination fixed partial denture. This photoelastic study examines the current theories revolving around intrusion and evaluates whether natural tooth intrusion is a definite possibility in an implant-tooth-connected fixed partial prosthesis. <b> Materials and Methods:</b> A two-dimensional photoelastic method was employed for testing and analysis. Two sets of photoelastic models were fabricated, one depicting a totally tooth-supported situation and the other an implant-tooth-supported situation. A rigid type and non-rigid type of connection were also incorporated into the fixed partial denture used in the both the situations in the study. Loads were applied on the anterior and posterior abutments and the pontic regions in both sets of models and the fringe patterns were photographically recorded for analysis. <b> Results and Conclusion:</b> The forces were proportionately consistent with the increase in applied loads in both the situations. The use of a non-rigid connection did not show any major significance but in fact may be erroneous. The forces were considerably higher in the implant-tooth-connected situation. The results indicated that the differences in the forces exerted were not light and continuous and may not cause tooth intrusion. Natural tooth intrusion may be caused by reasons other than excessive forces and needs further investigation. |
topic |
Implant-tooth combination in <i> fixed partial denture</i> intrusion phenomenon non-rigid connection photoelastic stress analysis rigid connection. |
url |
http://www.ijdr.in/article.asp?issn=0970-9290;year=2008;volume=19;issue=1;spage=6;epage=11;aulast=Srinivasan |
work_keys_str_mv |
AT srinivasanmurali intrusioninimplanttoothsupportedfixedprosthesisaniinvitroiphotoelasticstressanalysis AT padmanabhant intrusioninimplanttoothsupportedfixedprosthesisaniinvitroiphotoelasticstressanalysis |
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