Stress Analysis in Maxillary All-On-Four Model

The aim of this research was to evaluate the load distribution in tilted distal implants used in the all-on-four system. Two implant schemes were used. In both, two vertical anterior implants and tilted posterior implants were installed, one group with an angulation of 15 and another with an angulat...

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Autores principales:	Cidade,Castelo Pedro, Olate,Sergio, Pozzer,Leandro, Pimentel,Marcele Jardim, Nóbilo,Mauro, Albergaria-Barbosa,Jose Ricardo
Lenguaje:	English
Publicado:	Universidad de La Frontera. Facultad de Medicina 2015
Materias:	tilted implants photoelastic stress analysis maxillary implants
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-381X2015000200005
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id	oai:scielo:S0718-381X2015000200005
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spelling	oai:scielo:S0718-381X20150002000052016-03-22Stress Analysis in Maxillary All-On-Four ModelCidade,Castelo PedroOlate,SergioPozzer,LeandroPimentel,Marcele JardimNóbilo,MauroAlbergaria-Barbosa,Jose Ricardo tilted implants photoelastic stress analysis maxillary implants The aim of this research was to evaluate the load distribution in tilted distal implants used in the all-on-four system. Two implant schemes were used. In both, two vertical anterior implants and tilted posterior implants were installed, one group with an angulation of 15 and another with an angulation of 35. The implants were installed together with a bar binding them all in a photoelastic model obtained from a replica of an edentulous maxilla. In this model, loads were produced in the sector of the bar cantilever, the abutment of the tilted implants and over the four implants using devices specially designed for this purpose. The bands were recorded with a digital camera, and the qualitative and quantitative analyses were carried out by means of student's t-test and the Mann-Whitney test in Biostat v. 5.0, considering a level of p<0.05 to establish a statistically significant relation. In the qualitative analysis, the implant with 35 presented the greatest amount of stress on the cantilever forces at cervical level. The quantitative studies showed fewer differences in all aspects assessed, although significant differences were observed between the two systems when loads were applied at cantilever level. It can be concluded that there are minimal differences in the stress distribution when comparing implants with angulations of 15 or 35. However, there is a greater concentration of stress at the cervical level in implants tilted to 35.info:eu-repo/semantics/openAccessUniversidad de La Frontera. Facultad de MedicinaInternational journal of odontostomatology v.9 n.2 20152015-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-381X2015000200005en10.4067/S0718-381X2015000200005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	tilted implants photoelastic stress analysis maxillary implants
spellingShingle	tilted implants photoelastic stress analysis maxillary implants Cidade,Castelo Pedro Olate,Sergio Pozzer,Leandro Pimentel,Marcele Jardim Nóbilo,Mauro Albergaria-Barbosa,Jose Ricardo Stress Analysis in Maxillary All-On-Four Model
description	The aim of this research was to evaluate the load distribution in tilted distal implants used in the all-on-four system. Two implant schemes were used. In both, two vertical anterior implants and tilted posterior implants were installed, one group with an angulation of 15 and another with an angulation of 35. The implants were installed together with a bar binding them all in a photoelastic model obtained from a replica of an edentulous maxilla. In this model, loads were produced in the sector of the bar cantilever, the abutment of the tilted implants and over the four implants using devices specially designed for this purpose. The bands were recorded with a digital camera, and the qualitative and quantitative analyses were carried out by means of student's t-test and the Mann-Whitney test in Biostat v. 5.0, considering a level of p<0.05 to establish a statistically significant relation. In the qualitative analysis, the implant with 35 presented the greatest amount of stress on the cantilever forces at cervical level. The quantitative studies showed fewer differences in all aspects assessed, although significant differences were observed between the two systems when loads were applied at cantilever level. It can be concluded that there are minimal differences in the stress distribution when comparing implants with angulations of 15 or 35. However, there is a greater concentration of stress at the cervical level in implants tilted to 35.
author	Cidade,Castelo Pedro Olate,Sergio Pozzer,Leandro Pimentel,Marcele Jardim Nóbilo,Mauro Albergaria-Barbosa,Jose Ricardo
author_facet	Cidade,Castelo Pedro Olate,Sergio Pozzer,Leandro Pimentel,Marcele Jardim Nóbilo,Mauro Albergaria-Barbosa,Jose Ricardo
author_sort	Cidade,Castelo Pedro
title	Stress Analysis in Maxillary All-On-Four Model
title_short	Stress Analysis in Maxillary All-On-Four Model
title_full	Stress Analysis in Maxillary All-On-Four Model
title_fullStr	Stress Analysis in Maxillary All-On-Four Model
title_full_unstemmed	Stress Analysis in Maxillary All-On-Four Model
title_sort	stress analysis in maxillary all-on-four model
publisher	Universidad de La Frontera. Facultad de Medicina
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-381X2015000200005
work_keys_str_mv	AT cidadecastelopedro stressanalysisinmaxillaryallonfourmodel AT olatesergio stressanalysisinmaxillaryallonfourmodel AT pozzerleandro stressanalysisinmaxillaryallonfourmodel AT pimentelmarcelejardim stressanalysisinmaxillaryallonfourmodel AT nobilomauro stressanalysisinmaxillaryallonfourmodel AT albergariabarbosajosericardo stressanalysisinmaxillaryallonfourmodel
_version_	1714203967514214400

Stress Analysis in Maxillary All-On-Four Model

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