Effect of load angulation and crown shape on forces acting on post and core restored teeth: an in vitro study
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Kurt Rottner
Abstract
To assess the usefulness of different post and core materials and systems, in vitro testing of fracture strength and fatigue resistance is a useful tool. However, the literature does not present coherent results as to which system can withstand the highest loads. With a geometrical model, the effects of load angulation and contact point location on the generated forces were calculated. To validate the mathematical model, a set of measurements was performed with a set-up that made it possible to measure the critical forces on a post and core restoration. A high level of correlation between the predictions of the model and the measurements was found. It was shown that the resulting forces are strongly dependent on the precise design of the test set-up and results from different geometries cannot be compared directly. Very strong sensitivity to small misalignment was found, all of which serves to explain the large differences in the literature.
©2008 by Walter de Gruyter Berlin New York
Articles in the same Issue
- Guest editorial
- Biomechanics and biomaterials in oral rehabilitation and dental treatment
- Mini review
- Bone quality, quantity and metabolism in terms of dental implantation
- Research articles
- Finite element representation of bone substitute remodelling in the jaw bone
- The biomaterial influences the ossification after sinus floor elevation using tissue-engineered bone grafts
- O-phospho-l-serine: a modulator of bone healing in calcium-phosphate cements
- A new design for post and core restorations implementing positive locking
- Mechanical loading of orthodontic miniscrews – significance and problems: an experimental study
- Effect of load angulation and crown shape on forces acting on post and core restored teeth: an in vitro study
- Failure analysis of a new post-and-core restoration system using the finite element method
- The influence of the root cross-section on the stress distribution in teeth restored with a positive-locking post and core design: a finite element study
- Reproducibility of electronic tooth colour measurements
Articles in the same Issue
- Guest editorial
- Biomechanics and biomaterials in oral rehabilitation and dental treatment
- Mini review
- Bone quality, quantity and metabolism in terms of dental implantation
- Research articles
- Finite element representation of bone substitute remodelling in the jaw bone
- The biomaterial influences the ossification after sinus floor elevation using tissue-engineered bone grafts
- O-phospho-l-serine: a modulator of bone healing in calcium-phosphate cements
- A new design for post and core restorations implementing positive locking
- Mechanical loading of orthodontic miniscrews – significance and problems: an experimental study
- Effect of load angulation and crown shape on forces acting on post and core restored teeth: an in vitro study
- Failure analysis of a new post-and-core restoration system using the finite element method
- The influence of the root cross-section on the stress distribution in teeth restored with a positive-locking post and core design: a finite element study
- Reproducibility of electronic tooth colour measurements
