Biomechanical study of different surgical approaches of zygomatic implant to treat atrophic maxilla patients

A comparative analysis was made between two different surgical approaches, the intrasinus and the extramaxillary, for the placement of zygomatic implants to treat atrophic maxillae patients. The introduction of the extramaxillary approach was claimed by some quarters to reduce implant complications...

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Main Author:	Ishak, Muhammad Ikman
Format:	Thesis
Language:	English
Published:	2012
Subjects:	RK Dentistry
Online Access:	http://eprints.utm.my/id/eprint/31915/5/MuhammadIkmanIshakMFBSK2012.pdf
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id	my-utm-ep.31915
record_format	uketd_dc
spelling	my-utm-ep.319152017-09-25T04:37:14Z Biomechanical study of different surgical approaches of zygomatic implant to treat atrophic maxilla patients 2012-06 Ishak, Muhammad Ikman RK Dentistry A comparative analysis was made between two different surgical approaches, the intrasinus and the extramaxillary, for the placement of zygomatic implants to treat atrophic maxillae patients. The introduction of the extramaxillary approach was claimed by some quarters to reduce implant complications caused by inappropriate emergence of the implant head. However, implant failures from this surgical approach has been reported in literature. This study utilizes the finite element technique to analyse the strength of implant anchorage for both approaches in various occlusal loading locations and directions. Three-dimensional models of the human craniofacial structures surrounding a specific region of interest, soft tissue and framework were developed using computed tomography image datasets. The zygomatic and conventional dental implants were modelled using computer-aided design software and positioned according to the respective surgical approach. The bone was assumed to be linear isotropic with a stiffness of 13.4 GPa, and the implants were made of Ti6Al4V titanium alloy with a stiffness of 110 GPa. Masseter muscle forces of 300 N were applied at the zygomatic arch, and occlusal load of 150 N were applied onto the framework surface. The results showed that the intrasinus approach demonstrated more satisfactory results under various occlusal loading locations and, hence, could be a viable treatment option. However, the technique resulted in more stress increase to sustain loads in the oblique direction. The introduction of extramaxillary approach, on the other hand, could also be recommended as a reasonable treatment option, provided some improvements are made to address the cantilever effects as exhibited by the 30% higher stress within the zygomatic implant than those in the intrasinus approach. The technique also caused an increase in motion of prosthetic components under simulated masticatory loadings. 2012-06 Thesis http://eprints.utm.my/id/eprint/31915/ http://eprints.utm.my/id/eprint/31915/5/MuhammadIkmanIshakMFBSK2012.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:69094?site_name=Restricted Repository masters Universiti Teknologi Malaysia, Faculty of Biomedical Engineering and Health Science Faculty of Biomedical Engineering and Health Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	RK Dentistry
spellingShingle	RK Dentistry Ishak, Muhammad Ikman Biomechanical study of different surgical approaches of zygomatic implant to treat atrophic maxilla patients
description	A comparative analysis was made between two different surgical approaches, the intrasinus and the extramaxillary, for the placement of zygomatic implants to treat atrophic maxillae patients. The introduction of the extramaxillary approach was claimed by some quarters to reduce implant complications caused by inappropriate emergence of the implant head. However, implant failures from this surgical approach has been reported in literature. This study utilizes the finite element technique to analyse the strength of implant anchorage for both approaches in various occlusal loading locations and directions. Three-dimensional models of the human craniofacial structures surrounding a specific region of interest, soft tissue and framework were developed using computed tomography image datasets. The zygomatic and conventional dental implants were modelled using computer-aided design software and positioned according to the respective surgical approach. The bone was assumed to be linear isotropic with a stiffness of 13.4 GPa, and the implants were made of Ti6Al4V titanium alloy with a stiffness of 110 GPa. Masseter muscle forces of 300 N were applied at the zygomatic arch, and occlusal load of 150 N were applied onto the framework surface. The results showed that the intrasinus approach demonstrated more satisfactory results under various occlusal loading locations and, hence, could be a viable treatment option. However, the technique resulted in more stress increase to sustain loads in the oblique direction. The introduction of extramaxillary approach, on the other hand, could also be recommended as a reasonable treatment option, provided some improvements are made to address the cantilever effects as exhibited by the 30% higher stress within the zygomatic implant than those in the intrasinus approach. The technique also caused an increase in motion of prosthetic components under simulated masticatory loadings.
format	Thesis
qualification_level	Master's degree
author	Ishak, Muhammad Ikman
author_facet	Ishak, Muhammad Ikman
author_sort	Ishak, Muhammad Ikman
title	Biomechanical study of different surgical approaches of zygomatic implant to treat atrophic maxilla patients
title_short	Biomechanical study of different surgical approaches of zygomatic implant to treat atrophic maxilla patients
title_full	Biomechanical study of different surgical approaches of zygomatic implant to treat atrophic maxilla patients
title_fullStr	Biomechanical study of different surgical approaches of zygomatic implant to treat atrophic maxilla patients
title_full_unstemmed	Biomechanical study of different surgical approaches of zygomatic implant to treat atrophic maxilla patients
title_sort	biomechanical study of different surgical approaches of zygomatic implant to treat atrophic maxilla patients
granting_institution	Universiti Teknologi Malaysia, Faculty of Biomedical Engineering and Health Science
granting_department	Faculty of Biomedical Engineering and Health Science
publishDate	2012
url	http://eprints.utm.my/id/eprint/31915/5/MuhammadIkmanIshakMFBSK2012.pdf
_version_	1747815876395008000

Biomechanical study of different surgical approaches of zygomatic implant to treat atrophic maxilla patients

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