COUPLED THERMAL AND STRUCTURAL FINITE ELEMENT SOLUTION OF DENTAL CROWN STRUCTURES
Mehmet Ali̇ Güngör, Sakhavat Mammadzada, Faruk Şen, Celal Artunç · DergiPark (Istanbul University) · 2010
The objective of this study is to calculate the temperature and thermal stress distributions related to time as aresult of hot/cold liquid intake to the mouth utilizing finite element analysis (FEA). The crown models weredeveloped and analyzed using ANSYS software. In the first step of the study, the temperature changes underthermal loading as a result of hot/cold liquid in the mouth were obtained depending on time. In the second step,the thermal stresses produced by temperature changes were calculated. The distributions of temperatures andthermal stresses were drawn for some critical nodes. The effect of different metal and ceramic substrates onthermal response was considered. In the research, Ni-Cr alloy (NC) substrate experienced the highest values ofthermal stresses; comparatively the lowest stresses were calculated for Alumina core (AL) substrate. The valuesof the maximum thermal stresses for Zirconia core (ZrO2) and IPS Empress 2 (IE 2) were very close, but thevalues of it used IE 2 was smaller that ZrO2.