| Autor: |
Mishra, Aalok, Gulati, Manmeet, Goyal, Ram Rattan, Kumar, Manmohit Singh, Goel, Parul, Arora, Jasleen |
| Předmět: |
|
| Zdroj: |
Journal of Cardiovascular Disease Research (Journal of Cardiovascular Disease Research); 2021, Vol. 12 Issue 6, p539-550, 12p |
| Abstrakt: |
Background and Aim:Finite element modeling is described as the representation of the geometric model in terms of a finite number of elements and nodes which are building blocks of the numerical representation of the model. The sole aim of this study was to evaluate the stress distribution of mandibular implants using regular and platform switching implants. Materials & Methods:Initially, a three dimensional model simulating posterior edentulous maxillary segment containing a regular implant and a platform switching concept implant were designed. The finite element software used in this study was „ANSYS Workbench?. The titanium implants of diameter 4.5 mm and length 11.5 mm were designed as a solid cylinder. Group 1 implants were be placed by regular concept wherein group 2 implants were placed by platform switching concept. Group 3 implants were placed at 5degree lingual angulations. Eight different FEM models were formed to study the stress distribution of mandibular implants. Statistical Analysis and Results: Statistical analysis was completedby statistical software Statistical Package for the Social Sciences (SPSS). The recorded data was subjected to appropriate statistical tests to obtain p values, mean, standard deviation, standard error an 95% CI. P = 0.05 was considered as statistically significant. Total eight FEM models were designed based on the predetermined criteria for stress analysis. The results were obtained in values i.e. maximum Von Mises stress for each model. First model showed 21.7 Mpa stress values for cortical bone, 3.4 Mpa for cancellous bone and 21 Mpa for implants. In eighth model, stress values obtained were 27.9 Mpa for cortical bone, 4.8 Mpa for cancellous bone and 35 Mpa for implants. Conclusion: Within the limitations of the study authors concluded that among all studied groups, the maximum stress distribution among was seen in platform switched implants. It was also applicable to peri-implant regions. However, regular implants have been shown to distribute lesser stress inside and around the bone. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
