Biomechanical finite element analysis of small diameter and short dental implants: extensive study of commercial implants
-
Christoph Bourauel
,
Maria Aitlahrach
Abstract
In recent years, mini and short dental implants have become increasingly popular as treatment alternatives for patients in whom the bone is unsuitable for a standard implant. As yet, no detailed scientific analysis of the mechanical and biomechanical impact of the reduced diameter and length of these implants has been published. We analysed 21 commercially available implants (13 mini, eight short) with respect to material behaviour and load transfer to the alveolar bone, using finite element (FE) analysis. Following μCT scanning and geometry reconstruction, FE models of mini implants and short implants were inserted into idealised bone segments. Mini implants were analysed in the anterior mandibular jaw region at a force of 150 N under immediate loading, using a contact analysis in the FE software package Marc Mentat 2007. Short implants were inserted in posterior bone segments and analysed in the osseointegrated state at an occlusal force of 300 N. Von Mises stresses (up to 1150 MPa) in mini implants partly exceeded the ultimate strength. Implant diameter and geometry had a pronounced effect on stresses in the cortical plate (up to 266 MPa). Strains in spongy bone and stresses in cortical bone around short implants were markedly increased compared to those in standard implants. An increased risk of bone damage or implant failure may be assumed in critical clinical situations.
©2012 by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Guest editorial
- 10.1515/bmt-2012-0099
- Original Articles
- Immediate loading of an implant with fine threaded neck – bone resorption and clinical outcome of single tooth restorations in the maxilla
- The survival and proliferation of fibroblasts on ceramic implants: an in vitro study
- Simulating the trabecular bone structure around dental implants: a case presentation
- Biomechanical finite element analysis of small diameter and short dental implants: extensive study of commercial implants
- Bone loss of immediately loaded implants with implant-supported and tooth-implant-supported fixed maxillary prostheses
- Retrievable, tooth-implant-supported, complete-arch fixed restorations in the maxilla: a 6-year retrospective study
- Crestal minimally-invasive sinus lift on severely resorbed maxillary crest: prospective study
- Osteogenic capacity of transgenic flax scaffolds
- Detection of surfactant proteins A, B, C, and D in human gingiva and saliva
- Orofacial characteristics of adolescents with diagnosed spinal disorders
- 3D assisted morphological analysis of lingual upper central and lateral incisor surfaces
- Prelims
- Prelims
