Deformačně napěťová analýza prvního moláru s kavitou první třídy.

Stress Strain Analysis Of Restored First Molar With Cavity Of Class I.

conference paper

en

The presented paper is focused on the stress strain analysis of the restored tooth. From the reason of general geometry, complex material properties and boundary conditions a computational modeling was chosen. For this problem finite element method (FEM) was used. Solved system is focused on the first lower molar where dental caries is modeled and on its subsequent treatment with restoration. The tooth, which is modeled from the dentin and enamel, is established in the segment of the mandible. The tooth with cavity class I. (according to Black) is modeled in this work. The size of dental cavity is considered in three sizes, depending on the range of dental caries. For restoration of tooth, filling materials were used. These materials are commonly used in dental practice. Force was prescribed at the occlusal surface of tooth. The model of physiological tooth was created for comparison of stress strain states on the restored tooth. The analysis of the results shows that amalgam is the best material for tooth restoration in molar segment.

Předkládaná práce je zaměřena na deformačně napěťovou analýzu sanovaného zubu. Z důvodu složité geometrie, materiálových vlastností a okrajových podmínek bylo vybráno k řešení výpočtové modelování. Byla použita metoda konečných prvků. Řešení je zaměřeno na první dolní stoličku, kde je modelován zubní kaz po restaurování. Zub, který se skládá z dentinu a skloviny, je usazen v segmentu dolní čelisti. Je modelován zub s kavitou I. třídy (podle Blacka). Velikost zubní kavity je řešena ve třech velikostech, v závislosti na rozsahu zubního kazu. Pro obnovení zubů, byly použity výplňové materiály. Tyto materiály jsou běžně používané v zubní praxi. Síla byla předepsána na okluzní povrch zubu. Pro srovnání byl vytvořen model fyziologického zubu. Analýza výsledků ukazuje, že amalgám je nejlepší materiál pro výplně zubů v molárním segmentu.

The presented paper is focused on the stress strain analysis of the restored tooth. From the reason of general geometry, complex material properties and boundary conditions a computational modeling was chosen. For this problem finite element method (FEM) was used. Solved system is focused on the first lower molar where dental caries is modeled and on its subsequent treatment with restoration. The tooth, which is modeled from the dentin and enamel, is established in the segment of the mandible. The tooth with cavity class I. (according to Black) is modeled in this work. The size of dental cavity is considered in three sizes, depending on the range of dental caries. For restoration of tooth, filling materials were used. These materials are commonly used in dental practice. Force was prescribed at the occlusal surface of tooth. The model of physiological tooth was created for comparison of stress strain states on the restored tooth. The analysis of the results shows that amalgam is the best material for tooth restoration in molar segment.

Restored tooth; molar tooth; finite element method; amalgam; composite resin.

2011

09.05.2011

Institute of Thermomechanics

Prague

978-80-87012-33-8

Engineering Mechanics 2011, 17th International Conference

1

635–638

4