INVESTIGATION OF YOU NG'S MODULUS AND THERMAL EXPANSION COEFFICIENT EFFECTS ON TRANSIENT THERMAL ANALYSI S OF COATED TOOTH

Hamid Zamanlou; Sadri SEN; Filiz Karabudak; Ruhi Yeşildal

Article Details

INVESTIGATION OF YOU NG'S MODULUS AND THERMAL EXPANSION COEFFICIENT EFFECTS ON TRANSIENT THERMAL ANALYSI S OF COATED TOOTH

Authors:

Hamid Zamanlou | Sadri SEN | Filiz Karabudak | Ruhi Yeşildal

Publisher:

Ordu University

Main Topics:

Applied physics

Journal:

Ordu University Journal of Science and Tecnology 2014 Vol.4 Issue 2, pp.70-82

Document Type:

Article

Publication Date:

2/2016

Document Language:

English

Document ID (Org No.):

2000549061

Frequency:

Bi-Annual

eISSN:

2146-6459

pISSN:

2146-6440

Abstract:

 


Objective: to investigate the ideal combination of materials for tooth prosthesis. Methods: Due to achieving fast results, the axisymmetrical finite element method(FEM) was used to compare stress distribution in a maxillary second premolar restoredtooth by ANSYS program package. The five models (Model-1, Model-2, Model-3,Model-4, Model-5) were evaluated with different materials such as porcelain, Au-Pd,Ni-Cr, Ti, Zirconium. The tooth was assumed to be axisymmetric, non-directionalfeatures and elastic. Transient thermal stresses were studied in the models for differentperiods of time. Stress distribution of surfaces and interfaces were presented and theywere evaluated with combine effect of Young’s modulus and thermal expansioncoefficient. The combine effects and their constituents were explicated by consideringstress distribution and its point of effect.Results: According to the results obtained by analyzing the numerical experiments;highest magnitude of stresses belongs to Model-4 which makes damage (separation andthe formation of the interface crack) more likely to occur Model-5, Model-3, Model-1and Model-2 follow Model-4 in a row.Conclusion: Thermal expansion coefficient rate is the main reason of maximum stressdistribution in first interface while rate of the elastic modulus causes the critical stressvalues in second interface with combination of Acrylic-NiCr-Cement-Dentin-Pulp- Alveoler bone in Model-4 and for this reason this model was chosen as the criticalmodel. In comparison Model-4 with the other models, combination of Porcelain- Porcelain-Cement-Dentin-Pulp-Alveoler bone in Model-2 shows the betterperformance and recommended for clinical production modeling.

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Objective: to investigate the ideal combination of materials for tooth prosthesis.

Methods: Due to achieving fast results, the axisymmetrical finite element method (FEM) was used to compare stress distribution in a maxillary second premolar restored tooth by ANSYS program package. The five models (Model-1, Model-2, Model-3, Model-4, Model-5) were evaluated with different materials such as porcelain, Au-Pd, Ni-Cr, Ti, Zirconium. The tooth was assumed to be axisymmetric, non-directional features and elastic. Transient thermal stresses were studied in the models for different periods of time. Stress distribution of surfaces and interfaces were presented and they were evaluated with combine effect of Young’s modulus and thermal expansion coefficient. The combine effects and their constituents were explicated by considering stress distribution and its point of effect.

Results: According to the results obtained by analyzing the numerical experiments; highest magnitude of stresses belongs to Model-4 which makes damage (separation and the formation of the interface crack) more likely to occur Model-5, Model-3, Model-1 and Model-2 follow Model-4 in a row. 

Conclusion: Thermal expansion coefficient rate is the main reason of maximum stress distribution in first interface while rate of the elastic modulus causes the critical stress values in second interface with combination of Acrylic-NiCr-Cement-Dentin-Pulp-Alveoler bone in Model-4 and for this reason this model was chosen as the critical model. In comparison Model-4 with the other models, combination of Porcelain- Porcelain-Cement-Dentin-Pulp-Alveoler bone in Model-2  shows the better performance and recommended for clinical production modeling.

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Article Details

INVESTIGATION OF YOU NG'S MODULUS AND THERMAL EXPANSION COEFFICIENT EFFECTS ON TRANSIENT THERMAL ANALYSI S OF COATED TOOTH

Authors: Hamid Zamanlou | Sadri SEN | Filiz Karabudak | Ruhi Yeşildal

Publisher: Ordu University

Main Topics: Applied physics

Journal: Ordu University Journal of Science and Tecnology 2014 Vol.4 Issue 2, pp.70-82

Document Type: Article

Publication Date: 2/2016

Document Language: English

Document ID (Org No.): 2000549061

Frequency: Bi-Annual

eISSN: 2146-6459

pISSN: 2146-6440

Issues

Authors:

Hamid Zamanlou | Sadri SEN | Filiz Karabudak | Ruhi Yeşildal

Publisher:

Ordu University

Main Topics:

Applied physics

Journal:

Ordu University Journal of Science and Tecnology 2014 Vol.4 Issue 2, pp.70-82

Document Type:

Article

Publication Date:

2/2016

Document Language:

English

Document ID (Org No.):

2000549061

Frequency:

Bi-Annual

eISSN:

2146-6459

pISSN:

2146-6440