B. V. Nishta, Yu. V. Lakhtin, Yu. V. Smeyanov. Computer modeling and numerical analysis of the stress state after the restoration of a tooth cavity

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The earliest and the most common form of the dental system destruction are the defects in the teeth of different origin. The partial destruction even of a single tooth or mistakes in its reconstruction can be the starting point for a number of morphological and functional changes of the human maxillofacial unit. 

Timely restoration of a missing tooth form and functions with a variety of techniques allows preventing all these negative effects. An important issue in the treatment of hard tissue defects is to restore the bio-mechanical integrity of the tooth. The optimal combination of three structural elements – hard tissues of the tooth, properly restoring design and firm connection between them is the key to a reliable and durable function of the restored tooth.

The aim of this paper is the development and testing of a 3D finite element model that displays the structure of a natural tooth. The object of the research is geometrically complex multilayer bio-mechanical system that consists of enamel, dentin and seals. In this study the 3D solid modeling in SolidWorks and fi-nite element structural analysis in ANSYS Workbench were used. The tooth was assumed elastically de-formable body under static uniform force loading.

The calculations showed that the shape of the seal has a significant impact on the perception of me-chanical loading on the tooth chewing surface after the restoration cavity.

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[restab title=”Key words”]stress state, tooth stopper, three-dimensional model, dentin, enamel, finite element method.[/restab]
[restab title=”References”]

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