Finite Element Analysis of a Dental Crown Using

ANSYS

Team 5

• David Butler Jr.

• Radwan Kalo

• Matt Kayal

• David Pitchure

• Cynthia Quinn

Objective

Study the effects of stresses on

the proposed dental crown

material, a glass ceramic

(Dicor/MGC).

Description• The figure below illustrates the dentine, cement, Dicor/MGC,

and enamel. This shows the simulation of occlusal contact between tooth enamel and a ceramic dental crown.

MaterialColorCode

Young’sModulus

Poison’sRatio

Dentin 18.6 GPa 0.31Cement 2.4 GPa 0.30

Dicor/MGC 70 GPa 0.26Enamel 86 GPa 0.33

Constraints

Refined Mesh In High Stress Region

Biting Simulation

Crack Propagation

This study focuses on the generation of

stress and crack propagation over time

due to a pressure of approximately 7

MPa applied to the ceramic crown.

Initial Stress Distribution

Crack Initiation

Crack Propagation

Crack Propagation Through Crown Model

Crack Propagation with Void In Cement

This study focuses on the case where a

void exists between the ceramic crown

and the dentin structure. This model

illustrates realistic conditions due to

uneven distribution or degradation of

cement.

Initial Stress Distribution

Crack Initiation

Crack Propagation

Crack Propagation Through Crown Model with Void in Cement

Stress ComparisonUniform

Cement LayerNon-UniformCement Layer

Max FlexuralStress

57 Mpa 102 MPa

MaxCompressive

Stress236 Mpa 351 MPa

Future Considerations

• Geometry Changes

• Material Property Changes

• 3-D Analysis

Special Thanks

• Dr. Guangming Zhang

• Yuqing Cao