TITLE

Comparative Study of Different Conventional Dental Implant Numbers on Zygomatic Implant Stability - A Finite Element Analysis

AUTHOR(S)
Ikman Ishak, Muhammad; Ahmad Shafi, Aisyah
PUB. DATE
May 2014
SOURCE
Australian Journal of Basic & Applied Sciences;May2014, Vol. 8 Issue 7, p52
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Zygomatic dental implants are extensively used for the treatment of severely edentulous atrophic maxillae as an alternative to the previous protocol treatment by bone grafting. In order to achieve a high stability in supporting the prosthesis, these implants are commonly used in conjunction with conventional dental implants placed in the anterior region. However, there is no consensus found on the effects of different numbers of conventional dental implants towards bone stress and zygomatic implant stability. Through this study, three-dimensional (3D) models of craniofacial including soft tissue and prosthesis were constructed from computed tomography (CT) image datasets. The implant models were developed using computer-aided design (CAD) software and all models were analyzed via finite element analysis (FEA) software. A 230 N of vertical occlusal load was applied on the top surface of prosthesis in the first molar region and a masseter load of 300 N was applied at the zygomatic arch. Objective: To investigate the effects of different number of anterior conventional dental implants - 0, 1 and 2, for stress and displacement distribution within bone and zygomatic implant body, respectively, by using 3D FEA. Results: The result showed that the stability of zygomatic implant could be secured by the placement of conventional dental implants in the premaxillary region. Conclusion: The use of one conventional dental implant is preferable although it has significantly increased the bone stress magnitude for about 1.5-fold. The conventional dental implants have also reduced the tendency of zygomatic implant to highly displace from its original position.
ACCESSION #
96583851

 

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